SmogRank / Episodes / France

Central Europe, February and March 2023

For 5 days, from 28 February to 4 March 2023, 274 cities in France, Germany, Poland and 9 more countries had PM2.5 at least twice their usual for the time of year. The worst reading was Radomsko, Łódź Voivodeship, Poland: 148.0 µg/m³ on 1 March, about 5.8× its usual 25.3.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached274in 12 countries
Days528 February to 4 March 2023
Worst day3 March212 cities counted
Furthest above usual8.6×La Rochelle

Day by day

3 March 212 cities at twice their usual or more
Lauda-KönigshofenWürzburgNurembergHeilbronnBambergAschaffenburgGroßostheimCoburgWieslochHeidelbergMeiningenFuldaBensheimSuhlHanau am MainMannheimDarmstadtLudwigshafen am RheinSchwandorf in BayernInnsbruckLampertheimFrankfurt am MainWormsEschbornHattersheimEisenachRüsselsheim am MainMarktredwitzKönigstein im TaunusMainzErfurtGießenWiesbadenMühlhausenWeimarMarburg an der LahnJenaKaiserslauternWitzenhausenBolzanoBad KreuznachKasselLimburg an der LahnGöttingenNordhausenSokolovWeißenfelsSaalfelden am Steinernen MeerMarsbergNetphenAltenburgGoslarHalle (Saale)HalberstadtPilsenSalzgitterHildesheimKöthenBraunschweigSoestBitterfeld-WolfenLüdenscheidRintelnHannoverMagdeburgBielefeldUnnaSchwerteBurg bei MagdeburgLitvínovWelsLeverkusenTepliceTraunDattelnLinzAnsfeldenMünsterOsnabrückThionvilleHansestadt SalzwedelGelsenkirchenLuxembourgÚstí nad LabemAostaBrandenburg an der HavelOberhausenEsch-sur-AlzetteLuckenwaldeOytenWittenbergeBremenDelmenhorstTurinBorkenPotsdamGenoaWeselNauenKleinmachnowAmstettenTeltowFalkenseeLingenLa SpeziaBlankenfelde-MahlowHamburgEnschedeOldenburgKoperLubnjowFriesoytheSavonaNeuruppinKönigs WusterhausenBerlinMladá BoleslavSchwerinWolfsbergBremerhavenCottbusVenrayNeuenhagenLübeckLjubljanaBernau bei BerlinFlémalle-HauteItzehoeWilhelmshavenGenkWismarStrausbergNijmegenGüstrowHasseltHouthalenEberswaldeAndenneSankt PöltenEindhovenRijekaGrazTrbovljeKielEisenhüttenstadtFrankfurt (Oder)PesaroRostockNeubrandenburgCeljeMolBarneveldGroningenŽďár nad SázavouMonacoAarschotTilburgMariborSchwedt (Oder)NiceCharleroiFlensburgRixensartFalconara MarittimaUtrechtJesiIJsselsteinPtujBredaZaventemBastiaMaarssenMechelenCannesStralsundBrusselsGrimbergenWillebroekSzczecinAntwerpKapellenGorzów WielkopolskiGivorsZwijndrechtStabroekRidderkerkFréjusAmsterdamPurmerendBeverenŚwinoujścieMedemblikBadhoevedorpMonsCivitanova MarcheRotterdamSchiedamHillegomSpijkenisseVelserbroekVelsen-ZuidMaassluisThe HagueLochristi's-GravenzandeValenciennesGentEvergemDenainTournaiLa GardeKoprivnicaWaregemMaldegemKortrijkRoubaixDouaiIzegemMenenLilleRoeselareSereďPoznańArrasNîmesNitraOpoleKoksijdeLunelBanja LukaPúchovPartizánskeDunkirkMontpellierPrievidzaŽilinaHandlováNakło nad NoteciąŽiar nad HronomCalaisMartinUstkaBydgoszczBanská BystricaZvolenRužomberokLiberpolisMostarToruńKościerzynaLiptovský MikulᚌwiecieLučenecPerpignanSopotPopradGdyniaGdańskTrebinjePłockSpišská Nová VesCaenles EscaldesBelgradePruszkówLegionowoWarsawKonstancin-JeziornaOlsztynVranov nad TopľouPułtuskPejëCherbourgMitrovicëKętrzynPrizrenKosovo PoljeSiedlcePristinaPrzemyślGjilanAngletSaint-BrieucEłkGrajewoDonostia / San SebastiánOriaCluj-NapocaZarautzBiałystokLorientSuwałkiCalahorraBermeoAmorebietaGasteiz / VitoriaCraiovaBilbaoGetxoLaudio / LlodioBrestKaunasBurgosVilniusPrešovTrenčínHagenWeidenMostLęborkSninaHradec KrálovéOlomoucČadcaPezinokSenecBardejovZielona GóraSteyrNiskoJastrzębie ZdrójSaalfeldŁukówWłocławekBihaćDevínska Nová VesKomárnoDillingenDortmundPassauBielsko-BialaKutnoBerounZnojmoKlagenfurt am WörtherseeKlosterneuburgKielceŻaryKadaňGreizTrnavaSpeyerKrakówŁódźDěčínPragueMödlingJelenia GóraHumennéKošiceTrebišovAnconaAnsbachEssenKatowiceKędzierzyn-KoźleWarsteinLublinRadomCzechowice-DziedziceGapWuppertalVenloBrnoČeské BudějovicePardubiceKranjJihlavaLiberecViennaŻyrardówBratislavaNovo MestoStuttgartOtwockPerchtoldsdorfŽideniceAnnecyDuisburgIngolstadtUlmWrocławSenicaKladnoBéthuneDębicaJarosławZamośćMetzHattingenKelheimLudwigsburgAmiensRouenKarlsruheKehlKaliszKłodzkoHavířovOpavaFilderstadtSaarbrückenTraunreutTrierPřerovMalackyCoulommiersLe HavreSainte-Geneviève-des-BoisBadenBogatyniaKrapkowiceŁaskOstravaTřinecGardanneMielecDieppeNancyBohumínKrefeldWawerAalenDüsseldorfKölnNeu-UlmNeuwiedAvignonCreilPforzheimHodonínManosqueAugsburgBurghausenSolingenÉvreuxVannesBiberach an der RißSallanchesFos-sur-MerRatingenBeauvaisDaxLyonSaint-MaloSaint-QuentinVitrollesFriedrichshafenKonstanzKarvináTarnówRacibórzAlençonArlesParisStrasbourgHaguenauBonnKoblenzNamurHernaniLunévilleMontbéliardČeský TěšínHraniceValašské MeziříčíJasłoTarbesEggenstein-LeopoldshafenLindauMunichTübingenMarseilleRomans-sur-IsèreReimsRennesHerrenbergKroměřížAugustówRzeszówVillingen-SchwenningenChartresDomontDreuxBaden-BadenZlínAix-en-ProvenceStarachowiceÉpinalMarignaneMelunSarcellesReutlingenKrosnoDurangoBendorfMulhouseNysaMont-de-MarsanLisieuxRambouilletJüchenÉpernaySalon-de-ProvenceKempten (Allgäu)LiègeMarche-en-FamenneLe MansLensFrýdek-MístekMeyzieuValenceVillefranche-sur-SaôneVerdunMüllheimGrenobleMeylanKościanForbachToulouseOrléansSaint-DizierStarnbergJülichToursLourdesMönchengladbachLormontSaint-NazairePauDijonMontargisRodezAachenChalon-sur-SaôneLörrachFontainebleauMontaubanMontceau-les-MinesFreiburgSaint-ÉtienneAurillacBordeauxMarmandeAlbertvilleAnnemasseJoué-lès-ToursNantesAuxerreBergheimChambéryBesançonSaint-ChamondEupenBloisÉtampesPérigueuxRadomskoBourgesClermont-FerrandMâconPoitiersCouëronMoulinsOlivetVesoulHeerlenLimogesBourg-en-BresseMontluçonAngersChâteaurouxNiortLa Roche-sur-YonTroyesAngoulêmeLons-le-SaunierLa Rochelle
25 Feb2627281 Mar234567
Every measured city in the area, coloured by its PM2.5 that day; a dark ring marks a city at twice its usual or more. Bars: cities counted each day, coloured by their median level. Choose a day or press play; without JavaScript, the days link to that day's world ranking.

How it spread

RadomskoRadomsko, 25 February: 11.1 µg/m³, 0.4× usualRadomsko, 26 February: 19.0 µg/m³, 0.8× usualRadomsko, 27 February: 23.7 µg/m³, 0.9× usualRadomsko, 28 February: 89.4 µg/m³, 3.5× usualRadomsko, 1 March: 148.0 µg/m³, 5.8× usualRadomsko, 2 March: 130.3 µg/m³, 5.2× usualRadomsko, 3 March: 45.4 µg/m³, 1.8× usualRadomsko, 4 March: 18.0 µg/m³, 0.7× usualRadomsko, 5 March: 18.4 µg/m³, 0.7× usualRadomsko, 6 March: 19.3 µg/m³, 0.8× usualRadomsko, 7 March: 20.9 µg/m³, 0.8× usualKościanKościan, 25 February: 8.7 µg/m³, 0.3× usualKościan, 26 February: 5.9 µg/m³, 0.2× usualKościan, 27 February: 19.9 µg/m³, 0.7× usualKościan, 28 February: 61.3 µg/m³, 2.2× usualKościan, 1 March: 121.2 µg/m³, 4.4× usualKościan, 2 March: 60.6 µg/m³, 2.2× usualKościan, 3 March: 27.4 µg/m³, 1.0× usualKościan, 4 March: 22.0 µg/m³, 0.8× usualKościan, 5 March: 31.2 µg/m³, 1.1× usualKościan, 6 March: 42.9 µg/m³, 1.6× usualKościan, 7 March: 26.7 µg/m³, 1.0× usualRzeszówRzeszów, 25 February: 13.6 µg/m³, 0.6× usualRzeszów, 26 February: 10.0 µg/m³, 0.4× usualRzeszów, 27 February: 13.4 µg/m³, 0.5× usualRzeszów, 28 February: 51.8 µg/m³, 2.1× usualRzeszów, 1 March: 91.0 µg/m³, 3.7× usualRzeszów, 2 March: 74.9 µg/m³, 3.0× usualRzeszów, 3 March: 63.2 µg/m³, 2.6× usualRzeszów, 4 March: 25.0 µg/m³, 1.0× usualRzeszów, 5 March: 14.4 µg/m³, 0.6× usualRzeszów, 6 March: 12.9 µg/m³, 0.5× usualRzeszów, 7 March: 17.9 µg/m³, 0.7× usualStarachowiceStarachowice, 25 February: 6.9 µg/m³, 0.3× usualStarachowice, 26 February: 13.2 µg/m³, 0.6× usualStarachowice, 27 February: 11.1 µg/m³, 0.5× usualStarachowice, 28 February: 47.4 µg/m³, 2.0× usualStarachowice, 1 March: 71.6 µg/m³, 3.0× usualStarachowice, 2 March: 89.9 µg/m³, 3.8× usualStarachowice, 3 March: 33.8 µg/m³, 1.4× usualStarachowice, 4 March: 15.2 µg/m³, 0.6× usualStarachowice, 5 March: 11.7 µg/m³, 0.5× usualStarachowice, 6 March: 21.4 µg/m³, 0.9× usualStarachowice, 7 March: 26.1 µg/m³, 1.1× usualAugustówAugustów, 25 February: 18.6 µg/m³, 0.9× usualAugustów, 26 February: 10.6 µg/m³, 0.5× usualAugustów, 27 February: 40.8 µg/m³, 1.9× usualAugustów, 28 February: 79.1 µg/m³, 3.7× usualAugustów, 1 March: 23.1 µg/m³, 1.1× usualAugustów, 2 March: 27.3 µg/m³, 1.3× usualAugustów, 3 March: 20.2 µg/m³, 0.9× usualAugustów, 4 March: 9.6 µg/m³, 0.4× usualAugustów, 5 March: 16.7 µg/m³, 0.8× usualAugustów, 6 March: 32.3 µg/m³, 1.5× usualAugustów, 7 March: 40.9 µg/m³, 1.9× usualRacibórzRacibórz, 25 February: 12.2 µg/m³, 0.5× usualRacibórz, 26 February: 12.9 µg/m³, 0.6× usualRacibórz, 27 February: 17.3 µg/m³, 0.8× usualRacibórz, 28 February: 48.1 µg/m³, 2.1× usualRacibórz, 1 March: 74.0 µg/m³, 3.2× usualRacibórz, 2 March: 75.7 µg/m³, 3.3× usualRacibórz, 3 March: 46.1 µg/m³, 2.0× usualRacibórz, 4 March: 31.5 µg/m³, 1.4× usualRacibórz, 5 March: 15.7 µg/m³, 0.7× usualRacibórz, 6 March: 19.1 µg/m³, 0.8× usualRacibórz, 7 March: 22.5 µg/m³, 1.0× usualWłocławekWłocławek, 25 February: 12.1 µg/m³, 0.3× usualWłocławek, 26 February: 7.5 µg/m³, 0.2× usualWłocławek, 27 February: 15.0 µg/m³, 0.4× usualWłocławek, 28 February: 75.0 µg/m³, 2.1× usualWłocławek, 1 March: 73.1 µg/m³, 2.1× usualWłocławek, 2 March: 45.5 µg/m³, 1.3× usualWłocławek, 3 March: 24.4 µg/m³, 0.7× usualWłocławek, 4 March: 14.7 µg/m³, 0.4× usualWłocławek, 5 March: 17.4 µg/m³, 0.5× usualWłocławek, 6 March: 38.1 µg/m³, 1.1× usualWłocławek, 7 March: 31.1 µg/m³, 0.9× usualZamośćZamość, 25 February: 13.7 µg/m³, 0.6× usualZamość, 26 February: 9.4 µg/m³, 0.4× usualZamość, 27 February: 11.1 µg/m³, 0.5× usualZamość, 28 February: 62.3 µg/m³, 2.7× usualZamość, 1 March: 47.4 µg/m³, 2.0× usualZamość, 2 March: 54.0 µg/m³, 2.3× usualZamość, 3 March: 31.5 µg/m³, 1.4× usualZamość, 4 March: 19.0 µg/m³, 0.8× usualZamość, 5 March: 10.7 µg/m³, 0.5× usualZamość, 6 March: 20.8 µg/m³, 0.9× usualZamość, 7 March: 19.6 µg/m³, 0.8× usualŻyrardówŻyrardów, 25 February: 9.2 µg/m³, 0.4× usualŻyrardów, 26 February: 5.1 µg/m³, 0.2× usualŻyrardów, 27 February: 16.4 µg/m³, 0.7× usualŻyrardów, 28 February: 52.4 µg/m³, 2.1× usualŻyrardów, 1 March: 35.5 µg/m³, 1.4× usualŻyrardów, 2 March: 60.8 µg/m³, 2.5× usualŻyrardów, 3 March: 32.4 µg/m³, 1.3× usualŻyrardów, 4 March: 12.8 µg/m³, 0.5× usualŻyrardów, 5 March: 18.5 µg/m³, 0.8× usualŻyrardów, 6 March: 24.7 µg/m³, 1.0× usualŻyrardów, 7 March: 21.1 µg/m³, 0.9× usualRadomRadom, 25 February: 12.3 µg/m³, 0.5× usualRadom, 26 February: 17.9 µg/m³, 0.7× usualRadom, 27 February: 14.6 µg/m³, 0.6× usualRadom, 28 February: 58.0 µg/m³, 2.4× usualRadom, 1 March: 53.8 µg/m³, 2.2× usualRadom, 2 March: 48.0 µg/m³, 2.0× usualRadom, 3 March: 39.4 µg/m³, 1.6× usualRadom, 4 March: 19.3 µg/m³, 0.8× usualRadom, 5 March: 19.5 µg/m³, 0.8× usualRadom, 6 March: 23.1 µg/m³, 1.0× usualRadom, 7 March: 22.0 µg/m³, 0.9× usualWawerWawer, 25 February: 14.9 µg/m³, 0.8× usualWawer, 26 February: 17.2 µg/m³, 0.9× usualWawer, 27 February: 13.2 µg/m³, 0.7× usualWawer, 28 February: 42.0 µg/m³, 2.3× usualWawer, 1 March: 54.7 µg/m³, 3.0× usualWawer, 2 March: 50.3 µg/m³, 2.7× usualWawer, 3 March: 43.8 µg/m³, 2.4× usualWawer, 4 March: 18.2 µg/m³, 1.0× usualWawer, 5 March: 18.3 µg/m³, 1.0× usualWawer, 6 March: 30.0 µg/m³, 1.6× usualWawer, 7 March: 28.0 µg/m³, 1.5× usualŁaskŁask, 25 February: 10.9 µg/m³, 0.3× usualŁask, 26 February: 9.2 µg/m³, 0.3× usualŁask, 27 February: 25.5 µg/m³, 0.8× usualŁask, 28 February: 45.9 µg/m³, 1.4× usualŁask, 1 March: 95.0 µg/m³, 2.9× usualŁask, 2 March: 85.4 µg/m³, 2.6× usualŁask, 3 March: 36.6 µg/m³, 1.1× usualŁask, 4 March: 21.7 µg/m³, 0.7× usualŁask, 5 March: 23.2 µg/m³, 0.7× usualŁask, 6 March: 25.6 µg/m³, 0.8× usualŁask, 7 March: 18.0 µg/m³, 0.6× usualKaliszKalisz, 25 February: 9.1 µg/m³, 0.3× usualKalisz, 26 February: 9.1 µg/m³, 0.3× usualKalisz, 27 February: 19.3 µg/m³, 0.6× usualKalisz, 28 February: 46.0 µg/m³, 1.4× usualKalisz, 1 March: 90.1 µg/m³, 2.8× usualKalisz, 2 March: 85.0 µg/m³, 2.6× usualKalisz, 3 March: 25.4 µg/m³, 0.8× usualKalisz, 4 March: 17.6 µg/m³, 0.5× usualKalisz, 5 March: 17.4 µg/m³, 0.5× usualKalisz, 6 March: 19.3 µg/m³, 0.6× usualKalisz, 7 March: no readingKłodzkoKłodzko, 25 February: 6.1 µg/m³, 0.2× usualKłodzko, 26 February: 7.8 µg/m³, 0.3× usualKłodzko, 27 February: 13.1 µg/m³, 0.4× usualKłodzko, 28 February: 43.5 µg/m³, 1.4× usualKłodzko, 1 March: 75.6 µg/m³, 2.5× usualKłodzko, 2 March: 85.9 µg/m³, 2.8× usualKłodzko, 3 March: 78.7 µg/m³, 2.6× usualKłodzko, 4 March: 34.4 µg/m³, 1.1× usualKłodzko, 5 March: 11.9 µg/m³, 0.4× usualKłodzko, 6 March: 17.1 µg/m³, 0.6× usualKłodzko, 7 March: 14.9 µg/m³, 0.5× usualFrýdek-MístekFrýdek-Místek, 25 February: 5.7 µg/m³, 0.3× usualFrýdek-Místek, 26 February: 10.5 µg/m³, 0.6× usualFrýdek-Místek, 27 February: 14.8 µg/m³, 0.8× usualFrýdek-Místek, 28 February: 24.3 µg/m³, 1.4× usualFrýdek-Místek, 1 March: 58.7 µg/m³, 3.3× usualFrýdek-Místek, 2 March: 77.6 µg/m³, 4.3× usualFrýdek-Místek, 3 March: 65.7 µg/m³, 3.7× usualFrýdek-Místek, 4 March: 29.1 µg/m³, 1.6× usualFrýdek-Místek, 5 March: 7.7 µg/m³, 0.4× usualFrýdek-Místek, 6 March: 7.3 µg/m³, 0.4× usualFrýdek-Místek, 7 March: 16.5 µg/m³, 0.9× usualBohumínBohumín, 25 February: 5.4 µg/m³, 0.2× usualBohumín, 26 February: 12.0 µg/m³, 0.5× usualBohumín, 27 February: 13.6 µg/m³, 0.5× usualBohumín, 28 February: 25.0 µg/m³, 1.0× usualBohumín, 1 March: 68.9 µg/m³, 2.7× usualBohumín, 2 March: 76.3 µg/m³, 3.0× usualBohumín, 3 March: 52.0 µg/m³, 2.0× usualBohumín, 4 March: 27.1 µg/m³, 1.1× usualBohumín, 5 March: 10.0 µg/m³, 0.4× usualBohumín, 6 March: 9.2 µg/m³, 0.4× usualBohumín, 7 March: 13.5 µg/m³, 0.5× usualDębicaDębica, 25 February: 14.7 µg/m³, 0.5× usualDębica, 26 February: 9.5 µg/m³, 0.4× usualDębica, 27 February: 12.3 µg/m³, 0.5× usualDębica, 28 February: 49.3 µg/m³, 1.8× usualDębica, 1 March: 73.2 µg/m³, 2.7× usualDębica, 2 March: 70.7 µg/m³, 2.6× usualDębica, 3 March: 64.2 µg/m³, 2.4× usualDębica, 4 March: 28.9 µg/m³, 1.1× usualDębica, 5 March: 14.3 µg/m³, 0.5× usualDębica, 6 March: 16.4 µg/m³, 0.6× usualDębica, 7 March: 20.9 µg/m³, 0.8× usualTarnówTarnów, 25 February: 9.3 µg/m³, 0.4× usualTarnów, 26 February: 8.5 µg/m³, 0.4× usualTarnów, 27 February: 12.7 µg/m³, 0.6× usualTarnów, 28 February: 41.0 µg/m³, 1.9× usualTarnów, 1 March: 72.0 µg/m³, 3.3× usualTarnów, 2 March: 65.9 µg/m³, 3.1× usualTarnów, 3 March: 52.4 µg/m³, 2.4× usualTarnów, 4 March: 21.7 µg/m³, 1.0× usualTarnów, 5 March: 12.8 µg/m³, 0.6× usualTarnów, 6 March: 13.5 µg/m³, 0.6× usualTarnów, 7 March: 16.9 µg/m³, 0.8× usualMielecMielec, 25 February: 9.0 µg/m³, 0.4× usualMielec, 26 February: 13.7 µg/m³, 0.6× usualMielec, 27 February: 15.3 µg/m³, 0.7× usualMielec, 28 February: 41.1 µg/m³, 1.8× usualMielec, 1 March: 67.7 µg/m³, 2.9× usualMielec, 2 March: 62.8 µg/m³, 2.7× usualMielec, 3 March: 51.7 µg/m³, 2.2× usualMielec, 4 March: 22.7 µg/m³, 1.0× usualMielec, 5 March: 10.7 µg/m³, 0.5× usualMielec, 6 March: 13.4 µg/m³, 0.6× usualMielec, 7 March: 18.8 µg/m³, 0.8× usualValašské MeziříčíValašské Meziříčí, 25 February: 6.3 µg/m³, 0.3× usualValašské Meziříčí, 26 February: 7.8 µg/m³, 0.4× usualValašské Meziříčí, 27 February: 11.4 µg/m³, 0.6× usualValašské Meziříčí, 28 February: 26.2 µg/m³, 1.4× usualValašské Meziříčí, 1 March: 50.4 µg/m³, 2.6× usualValašské Meziříčí, 2 March: 67.6 µg/m³, 3.5× usualValašské Meziříčí, 3 March: 61.6 µg/m³, 3.2× usualValašské Meziříčí, 4 March: 31.6 µg/m³, 1.6× usualValašské Meziříčí, 5 March: 13.9 µg/m³, 0.7× usualValašské Meziříčí, 6 March: 8.5 µg/m³, 0.4× usualValašské Meziříčí, 7 March: 19.9 µg/m³, 1.0× usualKarvináKarviná, 25 February: 5.9 µg/m³, 0.3× usualKarviná, 26 February: 9.8 µg/m³, 0.5× usualKarviná, 27 February: 11.5 µg/m³, 0.6× usualKarviná, 28 February: 25.5 µg/m³, 1.3× usualKarviná, 1 March: 50.6 µg/m³, 2.5× usualKarviná, 2 March: 66.6 µg/m³, 3.3× usualKarviná, 3 March: 36.7 µg/m³, 1.8× usualKarviná, 4 March: 27.8 µg/m³, 1.4× usualKarviná, 5 March: 10.3 µg/m³, 0.5× usualKarviná, 6 March: 10.9 µg/m³, 0.5× usualKarviná, 7 March: 16.6 µg/m³, 0.8× usualČeský TěšínČeský Těšín, 25 February: 5.3 µg/m³, 0.3× usualČeský Těšín, 26 February: 10.2 µg/m³, 0.5× usualČeský Těšín, 27 February: 15.7 µg/m³, 0.8× usualČeský Těšín, 28 February: 24.1 µg/m³, 1.3× usualČeský Těšín, 1 March: 55.0 µg/m³, 3.0× usualČeský Těšín, 2 March: 65.8 µg/m³, 3.5× usualČeský Těšín, 3 March: 53.3 µg/m³, 2.9× usualČeský Těšín, 4 March: 23.2 µg/m³, 1.2× usualČeský Těšín, 5 March: 8.3 µg/m³, 0.4× usualČeský Těšín, 6 March: 7.9 µg/m³, 0.4× usualČeský Těšín, 7 March: 14.6 µg/m³, 0.8× usualHavířovHavířov, 25 February: 7.4 µg/m³, 0.3× usualHavířov, 26 February: 10.3 µg/m³, 0.4× usualHavířov, 27 February: 13.4 µg/m³, 0.6× usualHavířov, 28 February: 24.4 µg/m³, 1.1× usualHavířov, 1 March: 52.0 µg/m³, 2.2× usualHavířov, 2 March: 64.0 µg/m³, 2.8× usualHavířov, 3 March: 47.0 µg/m³, 2.0× usualHavířov, 4 March: 27.5 µg/m³, 1.2× usualHavířov, 5 March: 8.4 µg/m³, 0.4× usualHavířov, 6 March: 10.7 µg/m³, 0.5× usualHavířov, 7 March: 16.6 µg/m³, 0.7× usualOstravaOstrava, 25 February: 5.6 µg/m³, 0.3× usualOstrava, 26 February: 11.0 µg/m³, 0.5× usualOstrava, 27 February: 14.9 µg/m³, 0.7× usualOstrava, 28 February: 32.0 µg/m³, 1.5× usualOstrava, 1 March: 59.7 µg/m³, 2.8× usualOstrava, 2 March: 63.1 µg/m³, 2.9× usualOstrava, 3 March: 48.3 µg/m³, 2.3× usualOstrava, 4 March: 26.0 µg/m³, 1.2× usualOstrava, 5 March: 8.3 µg/m³, 0.4× usualOstrava, 6 March: 10.0 µg/m³, 0.5× usualOstrava, 7 March: 17.8 µg/m³, 0.8× usualNysaNysa, 25 February: 6.0 µg/m³, 0.4× usualNysa, 26 February: 7.5 µg/m³, 0.5× usualNysa, 27 February: 13.8 µg/m³, 0.9× usualNysa, 28 February: 32.2 µg/m³, 2.1× usualNysa, 1 March: 52.9 µg/m³, 3.4× usualNysa, 2 March: 62.7 µg/m³, 4.0× usualNysa, 3 March: 50.1 µg/m³, 3.2× usualNysa, 4 March: 23.1 µg/m³, 1.5× usualNysa, 5 March: 11.6 µg/m³, 0.7× usualNysa, 6 March: 10.5 µg/m³, 0.7× usualNysa, 7 March: 11.5 µg/m³, 0.7× usualJarosławJarosław, 25 February: 12.0 µg/m³, 0.5× usualJarosław, 26 February: 8.2 µg/m³, 0.4× usualJarosław, 27 February: 8.4 µg/m³, 0.4× usualJarosław, 28 February: 43.2 µg/m³, 1.9× usualJarosław, 1 March: 62.6 µg/m³, 2.7× usualJarosław, 2 March: 60.2 µg/m³, 2.6× usualJarosław, 3 March: 44.6 µg/m³, 1.9× usualJarosław, 4 March: 21.1 µg/m³, 0.9× usualJarosław, 5 March: 10.1 µg/m³, 0.4× usualJarosław, 6 March: 15.3 µg/m³, 0.7× usualJarosław, 7 March: 17.6 µg/m³, 0.8× usualJastrzębie ZdrójJastrzębie Zdrój, 25 February: 10.6 µg/m³, 0.4× usualJastrzębie Zdrój, 26 February: 19.1 µg/m³, 0.7× usualJastrzębie Zdrój, 27 February: 17.9 µg/m³, 0.6× usualJastrzębie Zdrój, 28 February: 33.1 µg/m³, 1.2× usualJastrzębie Zdrój, 1 March: 59.1 µg/m³, 2.1× usualJastrzębie Zdrój, 2 March: 55.5 µg/m³, 2.0× usualJastrzębie Zdrój, 3 March: 58.4 µg/m³, 2.1× usualJastrzębie Zdrój, 4 March: 31.3 µg/m³, 1.1× usualJastrzębie Zdrój, 5 March: 16.8 µg/m³, 0.6× usualJastrzębie Zdrój, 6 March: 17.2 µg/m³, 0.6× usualJastrzębie Zdrój, 7 March: 21.9 µg/m³, 0.8× usualJasłoJasło, 25 February: 9.7 µg/m³, 0.6× usualJasło, 26 February: 5.8 µg/m³, 0.3× usualJasło, 27 February: 8.1 µg/m³, 0.5× usualJasło, 28 February: 21.5 µg/m³, 1.3× usualJasło, 1 March: 45.6 µg/m³, 2.7× usualJasło, 2 March: 59.0 µg/m³, 3.5× usualJasło, 3 March: 50.2 µg/m³, 3.0× usualJasło, 4 March: 23.0 µg/m³, 1.4× usualJasło, 5 March: 9.9 µg/m³, 0.6× usualJasło, 6 March: 9.6 µg/m³, 0.6× usualJasło, 7 March: 16.9 µg/m³, 1.0× usualLublinLublin, 25 February: 12.6 µg/m³, 0.5× usualLublin, 26 February: 9.7 µg/m³, 0.4× usualLublin, 27 February: 15.3 µg/m³, 0.6× usualLublin, 28 February: 42.2 µg/m³, 1.8× usualLublin, 1 March: 58.0 µg/m³, 2.4× usualLublin, 2 March: 57.9 µg/m³, 2.4× usualLublin, 3 March: 36.9 µg/m³, 1.5× usualLublin, 4 March: 22.9 µg/m³, 1.0× usualLublin, 5 March: 14.7 µg/m³, 0.6× usualLublin, 6 March: 30.0 µg/m³, 1.3× usualLublin, 7 March: 32.9 µg/m³, 1.4× usualKatowiceKatowice, 25 February: 14.3 µg/m³, 0.6× usualKatowice, 26 February: 14.4 µg/m³, 0.6× usualKatowice, 27 February: 13.8 µg/m³, 0.6× usualKatowice, 28 February: 30.3 µg/m³, 1.3× usualKatowice, 1 March: 54.7 µg/m³, 2.3× usualKatowice, 2 March: 57.9 µg/m³, 2.4× usualKatowice, 3 March: 46.3 µg/m³, 1.9× usualKatowice, 4 March: 27.2 µg/m³, 1.1× usualKatowice, 5 March: 16.1 µg/m³, 0.7× usualKatowice, 6 March: 21.0 µg/m³, 0.9× usualKatowice, 7 March: 23.2 µg/m³, 1.0× usualTřinecTřinec, 25 February: 6.1 µg/m³, 0.3× usualTřinec, 26 February: 11.9 µg/m³, 0.6× usualTřinec, 27 February: 16.9 µg/m³, 0.9× usualTřinec, 28 February: 24.2 µg/m³, 1.3× usualTřinec, 1 March: 47.6 µg/m³, 2.5× usualTřinec, 2 March: 56.4 µg/m³, 2.9× usualTřinec, 3 March: 56.4 µg/m³, 2.9× usualTřinec, 4 March: 21.5 µg/m³, 1.1× usualTřinec, 5 March: 8.4 µg/m³, 0.4× usualTřinec, 6 March: 9.8 µg/m³, 0.5× usualTřinec, 7 March: 18.1 µg/m³, 0.9× usualZlínZlín, 25 February: 6.7 µg/m³, 0.4× usualZlín, 26 February: 8.5 µg/m³, 0.6× usualZlín, 27 February: 9.0 µg/m³, 0.6× usualZlín, 28 February: 20.9 µg/m³, 1.4× usualZlín, 1 March: 38.3 µg/m³, 2.6× usualZlín, 2 March: 53.7 µg/m³, 3.6× usualZlín, 3 March: 56.4 µg/m³, 3.8× usualZlín, 4 March: 25.3 µg/m³, 1.7× usualZlín, 5 March: 8.9 µg/m³, 0.6× usualZlín, 6 March: 7.8 µg/m³, 0.5× usualZlín, 7 March: 18.2 µg/m³, 1.2× usualJelenia GóraJelenia Góra, 25 February: 3.6 µg/m³, 0.2× usualJelenia Góra, 26 February: 4.8 µg/m³, 0.2× usualJelenia Góra, 27 February: 11.0 µg/m³, 0.5× usualJelenia Góra, 28 February: 30.3 µg/m³, 1.3× usualJelenia Góra, 1 March: 49.6 µg/m³, 2.1× usualJelenia Góra, 2 March: 55.2 µg/m³, 2.3× usualJelenia Góra, 3 March: 30.7 µg/m³, 1.3× usualJelenia Góra, 4 March: 12.7 µg/m³, 0.5× usualJelenia Góra, 5 March: 7.0 µg/m³, 0.3× usualJelenia Góra, 6 March: 17.3 µg/m³, 0.7× usualJelenia Góra, 7 March: 15.6 µg/m³, 0.7× usualKrosnoKrosno, 25 February: 11.5 µg/m³, 0.8× usualKrosno, 26 February: 6.5 µg/m³, 0.5× usualKrosno, 27 February: 9.3 µg/m³, 0.7× usualKrosno, 28 February: 25.3 µg/m³, 1.8× usualKrosno, 1 March: 51.2 µg/m³, 3.6× usualKrosno, 2 March: 55.1 µg/m³, 3.9× usualKrosno, 3 March: 47.9 µg/m³, 3.4× usualKrosno, 4 March: 15.2 µg/m³, 1.1× usualKrosno, 5 March: 9.9 µg/m³, 0.7× usualKrosno, 6 March: 8.8 µg/m³, 0.6× usualKrosno, 7 March: 13.3 µg/m³, 0.9× usualKrapkowiceKrapkowice, 25 February: 4.1 µg/m³, 0.2× usualKrapkowice, 26 February: 8.0 µg/m³, 0.4× usualKrapkowice, 27 February: 10.4 µg/m³, 0.6× usualKrapkowice, 28 February: 23.4 µg/m³, 1.3× usualKrapkowice, 1 March: 46.1 µg/m³, 2.6× usualKrapkowice, 2 March: 52.7 µg/m³, 2.9× usualKrapkowice, 3 March: 21.3 µg/m³, 1.2× usualKrapkowice, 4 March: 10.6 µg/m³, 0.6× usualKrapkowice, 5 March: 8.4 µg/m³, 0.5× usualKrapkowice, 6 March: 21.0 µg/m³, 1.2× usualKrapkowice, 7 March: 17.5 µg/m³, 1.0× usualHraniceHranice, 25 February: 3.9 µg/m³, 0.3× usualHranice, 26 February: 7.3 µg/m³, 0.5× usualHranice, 27 February: 10.9 µg/m³, 0.7× usualHranice, 28 February: 21.0 µg/m³, 1.4× usualHranice, 1 March: 39.6 µg/m³, 2.6× usualHranice, 2 March: 51.9 µg/m³, 3.5× usualHranice, 3 March: 43.1 µg/m³, 2.9× usualHranice, 4 March: 21.9 µg/m³, 1.5× usualHranice, 5 March: 8.2 µg/m³, 0.5× usualHranice, 6 March: 9.7 µg/m³, 0.6× usualHranice, 7 March: 17.9 µg/m³, 1.2× usualOpavaOpava, 25 February: 6.5 µg/m³, 0.3× usualOpava, 26 February: 9.0 µg/m³, 0.5× usualOpava, 27 February: 11.2 µg/m³, 0.6× usualOpava, 28 February: 24.2 µg/m³, 1.3× usualOpava, 1 March: 43.0 µg/m³, 2.3× usualOpava, 2 March: 51.6 µg/m³, 2.8× usualOpava, 3 March: 49.1 µg/m³, 2.6× usualOpava, 4 March: 24.7 µg/m³, 1.3× usualOpava, 5 March: 7.6 µg/m³, 0.4× usualOpava, 6 March: 8.9 µg/m³, 0.5× usualOpava, 7 March: 15.2 µg/m³, 0.8× usualBourg-en-BresseBourg-en-Bresse, 25 February: 7.1 µg/m³, 0.9× usualBourg-en-Bresse, 26 February: 4.3 µg/m³, 0.5× usualBourg-en-Bresse, 27 February: 5.7 µg/m³, 0.7× usualBourg-en-Bresse, 28 February: 15.3 µg/m³, 1.9× usualBourg-en-Bresse, 1 March: 27.6 µg/m³, 3.4× usualBourg-en-Bresse, 2 March: 36.6 µg/m³, 4.5× usualBourg-en-Bresse, 3 March: 51.6 µg/m³, 6.4× usualBourg-en-Bresse, 4 March: 47.2 µg/m³, 5.8× usualBourg-en-Bresse, 5 March: 29.2 µg/m³, 3.6× usualBourg-en-Bresse, 6 March: 27.1 µg/m³, 3.3× usualBourg-en-Bresse, 7 March: 21.8 µg/m³, 2.7× usualMeylanMeylan, 25 February: 11.4 µg/m³, 1.1× usualMeylan, 26 February: 5.7 µg/m³, 0.6× usualMeylan, 27 February: 12.6 µg/m³, 1.2× usualMeylan, 28 February: 20.6 µg/m³, 2.0× usualMeylan, 1 March: 26.2 µg/m³, 2.6× usualMeylan, 2 March: 39.3 µg/m³, 3.9× usualMeylan, 3 March: 44.4 µg/m³, 4.4× usualMeylan, 4 March: 50.0 µg/m³, 5.0× usualMeylan, 5 March: 45.7 µg/m³, 4.5× usualMeylan, 6 March: 38.3 µg/m³, 3.8× usualMeylan, 7 March: 20.7 µg/m³, 2.0× usualOtwockOtwock, 25 February: 13.7 µg/m³, 0.4× usualOtwock, 26 February: 29.5 µg/m³, 0.9× usualOtwock, 27 February: 15.2 µg/m³, 0.5× usualOtwock, 28 February: 46.9 µg/m³, 1.5× usualOtwock, 1 March: 39.3 µg/m³, 1.3× usualOtwock, 2 March: 80.8 µg/m³, 2.6× usualOtwock, 3 March: 48.9 µg/m³, 1.6× usualOtwock, 4 March: 17.7 µg/m³, 0.6× usualOtwock, 5 March: 16.9 µg/m³, 0.5× usualOtwock, 6 March: 27.5 µg/m³, 0.9× usualOtwock, 7 March: 29.0 µg/m³, 0.9× usualBielsko-BialaBielsko-Biala, 25 February: 9.0 µg/m³, 0.3× usualBielsko-Biala, 26 February: 15.4 µg/m³, 0.5× usualBielsko-Biala, 27 February: 16.9 µg/m³, 0.5× usualBielsko-Biala, 28 February: 30.3 µg/m³, 1.0× usualBielsko-Biala, 1 March: 58.2 µg/m³, 1.9× usualBielsko-Biala, 2 March: 70.2 µg/m³, 2.2× usualBielsko-Biala, 3 March: no readingBielsko-Biala, 4 March: no readingBielsko-Biala, 5 March: 14.4 µg/m³, 0.5× usualBielsko-Biala, 6 March: 13.2 µg/m³, 0.4× usualBielsko-Biala, 7 March: 17.3 µg/m³, 0.6× usualWrocławWrocław, 25 February: 7.2 µg/m³, 0.3× usualWrocław, 26 February: 10.3 µg/m³, 0.4× usualWrocław, 27 February: 14.6 µg/m³, 0.6× usualWrocław, 28 February: 26.8 µg/m³, 1.1× usualWrocław, 1 March: 47.5 µg/m³, 1.9× usualWrocław, 2 March: 65.6 µg/m³, 2.7× usualWrocław, 3 March: 24.9 µg/m³, 1.0× usualWrocław, 4 March: 15.4 µg/m³, 0.6× usualWrocław, 5 March: 10.4 µg/m³, 0.4× usualWrocław, 6 March: 18.0 µg/m³, 0.7× usualWrocław, 7 March: 20.5 µg/m³, 0.8× usualKutnoKutno, 25 February: 8.8 µg/m³, 0.3× usualKutno, 26 February: 6.4 µg/m³, 0.2× usualKutno, 27 February: 12.4 µg/m³, 0.4× usualKutno, 28 February: 55.4 µg/m³, 1.9× usualKutno, 1 March: 51.5 µg/m³, 1.8× usualKutno, 2 March: 64.9 µg/m³, 2.2× usualKutno, 3 March: 34.8 µg/m³, 1.2× usualKutno, 4 March: 16.0 µg/m³, 0.6× usualKutno, 5 March: 19.9 µg/m³, 0.7× usualKutno, 6 March: 30.9 µg/m³, 1.1× usualKutno, 7 March: 20.2 µg/m³, 0.7× usualKrakówKraków, 25 February: 7.1 µg/m³, 0.3× usualKraków, 26 February: 7.1 µg/m³, 0.3× usualKraków, 27 February: 10.4 µg/m³, 0.4× usualKraków, 28 February: 24.5 µg/m³, 0.9× usualKraków, 1 March: 52.0 µg/m³, 1.9× usualKraków, 2 March: 61.3 µg/m³, 2.2× usualKraków, 3 March: 62.8 µg/m³, 2.3× usualKraków, 4 March: 30.4 µg/m³, 1.1× usualKraków, 5 March: 12.9 µg/m³, 0.5× usualKraków, 6 March: 20.0 µg/m³, 0.7× usualKraków, 7 March: 26.9 µg/m³, 1.0× usualŁódźŁódź, 25 February: 8.6 µg/m³, 0.4× usualŁódź, 26 February: 5.3 µg/m³, 0.2× usualŁódź, 27 February: 9.8 µg/m³, 0.4× usualŁódź, 28 February: 26.8 µg/m³, 1.1× usualŁódź, 1 March: 37.9 µg/m³, 1.5× usualŁódź, 2 March: 55.8 µg/m³, 2.3× usualŁódź, 3 March: 27.6 µg/m³, 1.1× usualŁódź, 4 March: 16.7 µg/m³, 0.7× usualŁódź, 5 March: 19.3 µg/m³, 0.8× usualŁódź, 6 March: 23.5 µg/m³, 1.0× usualŁódź, 7 March: 18.8 µg/m³, 0.8× usualKielceKielce, 25 February: 11.6 µg/m³, 0.5× usualKielce, 26 February: 13.8 µg/m³, 0.6× usualKielce, 27 February: 11.7 µg/m³, 0.5× usualKielce, 28 February: 34.1 µg/m³, 1.4× usualKielce, 1 March: 40.2 µg/m³, 1.7× usualKielce, 2 March: 53.2 µg/m³, 2.2× usualKielce, 3 March: 45.6 µg/m³, 1.9× usualKielce, 4 March: 17.6 µg/m³, 0.7× usualKielce, 5 March: 18.2 µg/m³, 0.8× usualKielce, 6 March: 19.8 µg/m³, 0.8× usualKielce, 7 March: 25.3 µg/m³, 1.1× usualPřerovPřerov, 25 February: 6.3 µg/m³, 0.3× usualPřerov, 26 February: 6.8 µg/m³, 0.4× usualPřerov, 27 February: 11.1 µg/m³, 0.6× usualPřerov, 28 February: 20.5 µg/m³, 1.1× usualPřerov, 1 March: 35.5 µg/m³, 1.9× usualPřerov, 2 March: 43.9 µg/m³, 2.4× usualPřerov, 3 March: 53.2 µg/m³, 2.9× usualPřerov, 4 March: 26.8 µg/m³, 1.4× usualPřerov, 5 March: 8.9 µg/m³, 0.5× usualPřerov, 6 March: 10.2 µg/m³, 0.6× usualPřerov, 7 March: 19.0 µg/m³, 1.0× usualChâteaurouxChâteauroux, 25 February: 9.8 µg/m³, 1.3× usualChâteauroux, 26 February: 6.0 µg/m³, 0.8× usualChâteauroux, 27 February: 5.1 µg/m³, 0.7× usualChâteauroux, 28 February: 9.3 µg/m³, 1.2× usualChâteauroux, 1 March: 21.1 µg/m³, 2.7× usualChâteauroux, 2 March: 39.1 µg/m³, 5.0× usualChâteauroux, 3 March: 52.8 µg/m³, 6.8× usualChâteauroux, 4 March: 39.2 µg/m³, 5.0× usualChâteauroux, 5 March: 26.5 µg/m³, 3.4× usualChâteauroux, 6 March: 22.7 µg/m³, 2.9× usualChâteauroux, 7 March: 15.2 µg/m³, 1.9× usualNiortNiort, 25 February: 9.9 µg/m³, 1.4× usualNiort, 26 February: 6.3 µg/m³, 0.9× usualNiort, 27 February: 6.0 µg/m³, 0.8× usualNiort, 28 February: 12.6 µg/m³, 1.7× usualNiort, 1 March: 21.2 µg/m³, 2.9× usualNiort, 2 March: 33.1 µg/m³, 4.5× usualNiort, 3 March: 52.7 µg/m³, 7.2× usualNiort, 4 March: 45.5 µg/m³, 6.2× usualNiort, 5 March: 22.6 µg/m³, 3.1× usualNiort, 6 March: 15.6 µg/m³, 2.1× usualNiort, 7 March: 15.4 µg/m³, 2.1× usualLa Roche-sur-YonLa Roche-sur-Yon, 25 February: 8.4 µg/m³, 1.2× usualLa Roche-sur-Yon, 26 February: 6.0 µg/m³, 0.8× usualLa Roche-sur-Yon, 27 February: 6.5 µg/m³, 0.9× usualLa Roche-sur-Yon, 28 February: 12.9 µg/m³, 1.8× usualLa Roche-sur-Yon, 1 March: 20.8 µg/m³, 2.9× usualLa Roche-sur-Yon, 2 March: 34.6 µg/m³, 4.9× usualLa Roche-sur-Yon, 3 March: 52.3 µg/m³, 7.4× usualLa Roche-sur-Yon, 4 March: 35.8 µg/m³, 5.0× usualLa Roche-sur-Yon, 5 March: 16.8 µg/m³, 2.4× usualLa Roche-sur-Yon, 6 March: 15.7 µg/m³, 2.2× usualLa Roche-sur-Yon, 7 March: 14.7 µg/m³, 2.1× usualNiskoNisko, 25 February: 11.6 µg/m³, 0.5× usualNisko, 26 February: 9.2 µg/m³, 0.4× usualNisko, 27 February: 9.4 µg/m³, 0.4× usualNisko, 28 February: 29.3 µg/m³, 1.2× usualNisko, 1 March: 39.5 µg/m³, 1.6× usualNisko, 2 March: 52.1 µg/m³, 2.1× usualNisko, 3 March: 44.6 µg/m³, 1.8× usualNisko, 4 March: 21.1 µg/m³, 0.9× usualNisko, 5 March: 10.9 µg/m³, 0.4× usualNisko, 6 March: 15.7 µg/m³, 0.6× usualNisko, 7 March: 19.4 µg/m³, 0.8× usualMoulinsMoulins, 25 February: 11.4 µg/m³, 1.3× usualMoulins, 26 February: 5.5 µg/m³, 0.6× usualMoulins, 27 February: 5.2 µg/m³, 0.6× usualMoulins, 28 February: 9.6 µg/m³, 1.1× usualMoulins, 1 March: 23.7 µg/m³, 2.8× usualMoulins, 2 March: 35.8 µg/m³, 4.2× usualMoulins, 3 March: 51.4 µg/m³, 6.0× usualMoulins, 4 March: 40.4 µg/m³, 4.7× usualMoulins, 5 March: 28.3 µg/m³, 3.3× usualMoulins, 6 March: 28.5 µg/m³, 3.3× usualMoulins, 7 March: 21.2 µg/m³, 2.5× usualBordeauxBordeaux, 25 February: 10.8 µg/m³, 1.3× usualBordeaux, 26 February: 6.9 µg/m³, 0.8× usualBordeaux, 27 February: 9.0 µg/m³, 1.1× usualBordeaux, 28 February: 12.2 µg/m³, 1.5× usualBordeaux, 1 March: 20.5 µg/m³, 2.5× usualBordeaux, 2 March: 34.7 µg/m³, 4.2× usualBordeaux, 3 March: 44.4 µg/m³, 5.3× usualBordeaux, 4 March: 50.9 µg/m³, 6.1× usualBordeaux, 5 March: 36.3 µg/m³, 4.4× usualBordeaux, 6 March: 26.0 µg/m³, 3.1× usualBordeaux, 7 March: 31.0 µg/m³, 3.7× usualDěčínDěčín, 25 February: 3.0 µg/m³, 0.1× usualDěčín, 26 February: 5.9 µg/m³, 0.3× usualDěčín, 27 February: 11.3 µg/m³, 0.5× usualDěčín, 28 February: 22.1 µg/m³, 1.0× usualDěčín, 1 March: 39.7 µg/m³, 1.8× usualDěčín, 2 March: 50.8 µg/m³, 2.3× usualDěčín, 3 March: 30.8 µg/m³, 1.4× usualDěčín, 4 March: 9.7 µg/m³, 0.4× usualDěčín, 5 March: 4.1 µg/m³, 0.2× usualDěčín, 6 March: 13.6 µg/m³, 0.6× usualDěčín, 7 March: 12.2 µg/m³, 0.6× usualAngoulêmeAngoulême, 25 February: 8.1 µg/m³, 1.2× usualAngoulême, 26 February: 6.4 µg/m³, 1.0× usualAngoulême, 27 February: 8.3 µg/m³, 1.3× usualAngoulême, 28 February: 10.9 µg/m³, 1.7× usualAngoulême, 1 March: 22.2 µg/m³, 3.4× usualAngoulême, 2 March: 38.6 µg/m³, 5.8× usualAngoulême, 3 March: 49.5 µg/m³, 7.5× usualAngoulême, 4 March: 42.5 µg/m³, 6.4× usualAngoulême, 5 March: 27.4 µg/m³, 4.2× usualAngoulême, 6 March: 25.2 µg/m³, 3.8× usualAngoulême, 7 March: 19.0 µg/m³, 2.9× usualBihaćBihać, 25 February: 10.5 µg/m³, 0.4× usualBihać, 26 February: no readingBihać, 27 February: 16.0 µg/m³, 0.5× usualBihać, 28 February: 19.2 µg/m³, 0.6× usualBihać, 1 March: 18.0 µg/m³, 0.6× usualBihać, 2 March: 42.9 µg/m³, 1.4× usualBihać, 3 March: 66.4 µg/m³, 2.2× usualBihać, 4 March: 72.8 µg/m³, 2.4× usualBihać, 5 March: 68.3 µg/m³, 2.3× usualBihać, 6 March: 40.0 µg/m³, 1.3× usualBihać, 7 March: 15.6 µg/m³, 0.5× usualCzechowice-DziedziceCzechowice-Dziedzice, 25 February: no readingCzechowice-Dziedzice, 26 February: no readingCzechowice-Dziedzice, 27 February: no readingCzechowice-Dziedzice, 28 February: no readingCzechowice-Dziedzice, 1 March: no readingCzechowice-Dziedzice, 2 March: no readingCzechowice-Dziedzice, 3 March: 70.7 µg/m³, 2.5× usualCzechowice-Dziedzice, 4 March: 26.0 µg/m³, 0.9× usualCzechowice-Dziedzice, 5 March: 17.1 µg/m³, 0.6× usualCzechowice-Dziedzice, 6 March: 13.2 µg/m³, 0.5× usualCzechowice-Dziedzice, 7 March: 16.9 µg/m³, 0.6× usualTrebišovTrebišov, 25 February: 16.3 µg/m³, 0.8× usualTrebišov, 26 February: 8.5 µg/m³, 0.4× usualTrebišov, 27 February: 7.5 µg/m³, 0.4× usualTrebišov, 28 February: 11.5 µg/m³, 0.5× usualTrebišov, 1 March: 17.5 µg/m³, 0.8× usualTrebišov, 2 March: 18.6 µg/m³, 0.9× usualTrebišov, 3 March: 35.7 µg/m³, 1.7× usualTrebišov, 4 March: 51.6 µg/m³, 2.4× usualTrebišov, 5 March: 14.9 µg/m³, 0.7× usualTrebišov, 6 March: 14.3 µg/m³, 0.7× usualTrebišov, 7 March: 17.7 µg/m³, 0.8× usualKošiceKošice, 25 February: 20.9 µg/m³, 1.0× usualKošice, 26 February: 7.8 µg/m³, 0.4× usualKošice, 27 February: 8.0 µg/m³, 0.4× usualKošice, 28 February: 11.6 µg/m³, 0.5× usualKošice, 1 March: 16.2 µg/m³, 0.8× usualKošice, 2 March: 17.9 µg/m³, 0.8× usualKošice, 3 March: 35.7 µg/m³, 1.7× usualKošice, 4 March: 50.8 µg/m³, 2.4× usualKošice, 5 March: 17.4 µg/m³, 0.8× usualKošice, 6 March: 14.8 µg/m³, 0.7× usualKošice, 7 March: 22.7 µg/m³, 1.1× usualHumennéHumenné, 25 February: 15.5 µg/m³, 0.7× usualHumenné, 26 February: 8.8 µg/m³, 0.4× usualHumenné, 27 February: 7.2 µg/m³, 0.3× usualHumenné, 28 February: 14.0 µg/m³, 0.7× usualHumenné, 1 March: 25.3 µg/m³, 1.2× usualHumenné, 2 March: 35.8 µg/m³, 1.7× usualHumenné, 3 March: 42.8 µg/m³, 2.0× usualHumenné, 4 March: 50.7 µg/m³, 2.4× usualHumenné, 5 March: 20.6 µg/m³, 1.0× usualHumenné, 6 March: 26.2 µg/m³, 1.2× usualHumenné, 7 March: 22.1 µg/m³, 1.0× usual25 Feb271 Mar357
The 60 cities with the highest readings of 274, in the order the episode reached them, 3 days before to 3 after. Each square is a day, coloured by that day's PM2.5; outlined: at twice the city's usual or more.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

Every city it reached

CityDaysHighestUsualAbove usual
La RochelleNew Aquitaine, France2 48.23 March5.68.6×
Lons-le-SaunierBourgogne-Franche-Comté, France2 37.83 March4.87.6×
AngoulêmeNew Aquitaine, France2 49.53 March6.67.5×
TroyesGrand Est, France2 39.13 March5.37.4×
La Roche-sur-YonPays de la Loire, France2 52.33 March7.17.4×
NiortNew Aquitaine, France2 52.73 March7.37.2×
MontluçonAuvergne-Rhône-Alpes, France3 45.44 March6.76.8×
ChâteaurouxCentre-Val de Loire, France2 52.83 March7.86.8×
Clermont-FerrandAuvergne-Rhône-Alpes, France2 43.24 March6.56.6×
AngersPays de la Loire, France2 43.73 March6.66.6×
Saint-ChamondAuvergne-Rhône-Alpes, France3 40.84 March6.36.5×
Bourg-en-BresseAuvergne-Rhône-Alpes, France3 51.63 March8.16.4×
AlbertvilleAuvergne-Rhône-Alpes, France3 48.34 March7.66.4×
ChambéryAuvergne-Rhône-Alpes, France2 49.04 March7.86.3×
HeerlenLimburg, The Netherlands1 41.13 March6.76.1×
BordeauxNew Aquitaine, France2 50.94 March8.36.1×
LimogesNew Aquitaine, France2 47.23 March7.76.1×
OlivetCentre-Val de Loire, France2 41.73 March6.96.0×
VesoulBourgogne-Franche-Comté, France3 42.23 March7.06.0×
CouëronPays de la Loire, France2 36.03 March6.06.0×
MontaubanOccitanie, France2 41.34 March6.96.0×
MoulinsAuvergne-Rhône-Alpes, France2 51.43 March8.66.0×
MâconBourgogne-Franche-Comté, France2 32.63 March5.55.9×
Saint-ÉtienneAuvergne-Rhône-Alpes, France3 43.84 March7.45.9×
MarmandeNew Aquitaine, France2 37.84 March6.45.9×
PoitiersNew Aquitaine, France2 46.03 March7.85.9×
BourgesCentre-Val de Loire, France2 48.13 March8.25.9×
RadomskoŁódź Voivodeship, Poland3 148.01 March25.35.8×
ToulouseOccitanie, France1 42.94 March7.45.8×
ÉtampesÎle-de-France, France2 37.93 March6.65.7×
BloisCentre-Val de Loire, France2 40.13 March7.05.7×
PérigueuxNew Aquitaine, France2 45.23 March7.95.7×
PauNew Aquitaine, France1 39.34 March6.95.7×
EupenWallonia, Belgium1 35.13 March6.25.7×
BesançonBourgogne-Franche-Comté, France2 41.23 March7.35.6×
BergheimNorth Rhine-Westphalia, Germany1 42.93 March7.85.5×
LormontNew Aquitaine, France2 42.24 March7.75.5×
RodezOccitanie, France2 30.64 March5.65.5×
LourdesOccitanie, France1 30.54 March5.65.4×
NantesPays de la Loire, France2 40.33 March7.45.4×
Joué-lès-ToursCentre-Val de Loire, France2 44.83 March8.35.4×
AuxerreBourgogne-Franche-Comté, France3 44.23 March8.25.4×
AnnemasseAuvergne-Rhône-Alpes, France2 48.43 March9.05.4×
AurillacAuvergne-Rhône-Alpes, France2 26.54 March4.45.3×
FreiburgBaden-Wurttemberg, Germany2 39.73 March7.65.2×
Montceau-les-MinesBourgogne-Franche-Comté, France2 36.03 March7.05.1×
FontainebleauÎle-de-France, France2 32.13 March6.35.1×
AachenNorth Rhine-Westphalia, Germany1 43.33 March8.65.0×
LörrachBaden-Wurttemberg, Germany2 45.33 March9.05.0×
HernaniBasque Country, Spain1 37.25 March7.45.0×
GrenobleAuvergne-Rhône-Alpes, France3 47.14 March9.45.0×
Chalon-sur-SaôneBourgogne-Franche-Comté, France2 36.83 March7.45.0×
MeylanAuvergne-Rhône-Alpes, France3 50.04 March10.15.0×
DijonBourgogne-Franche-Comté, France2 30.13 March6.14.9×
DurangoBasque Country, Spain1 36.06 March7.34.9×
ValenceAuvergne-Rhône-Alpes, France3 44.84 March9.14.9×
MontargisCentre-Val de Loire, France2 39.23 March8.04.9×
MönchengladbachNorth Rhine-Westphalia, Germany1 43.73 March9.34.7×
Aix-en-ProvenceProvence-Alpes-Côte d'Azur, France3 34.54 March7.44.7×
Saint-NazairePays de la Loire, France2 30.73 March6.64.7×
ToursCentre-Val de Loire, France2 39.13 March8.54.6×
TarbesOccitanie, France1 40.64 March8.94.6×
JülichNorth Rhine-Westphalia, Germany1 43.33 March9.54.6×
ForbachGrand Est, France1 35.23 March7.84.5×
Saint-DizierGrand Est, France2 37.03 March8.24.5×
OrléansCentre-Val de Loire, France2 45.03 March10.04.5×
StarnbergBavaria, Germany2 27.32 March6.14.5×
MüllheimBaden-Wurttemberg, Germany2 37.83 March8.54.4×
KościanGreater Poland, Poland3 121.21 March27.34.4×
VerdunGrand Est, France1 36.63 March8.34.4×
MeyzieuAuvergne-Rhône-Alpes, France3 42.94 March9.84.4×
Salon-de-ProvenceProvence-Alpes-Côte d'Azur, France2 32.85 March7.54.4×
Villefranche-sur-SaôneAuvergne-Rhône-Alpes, France3 40.03 March9.24.3×
Marche-en-FamenneWallonia, Belgium1 27.83 March6.44.3×
Le MansPays de la Loire, France2 34.33 March7.94.3×
Frýdek-MístekMoravian-Silesian Region, Czechia3 77.62 March17.94.3×
LiègeWallonia, Belgium1 33.33 March7.74.3×
LensHauts-de-France, France1 26.32 March6.14.3×
Romans-sur-IsèreAuvergne-Rhône-Alpes, France3 48.54 March11.44.3×
Kempten (Allgäu)Bavaria, Germany2 36.43 March8.64.2×
MarignaneProvence-Alpes-Côte d'Azur, France2 37.34 March8.94.2×
ÉpernayGrand Est, France2 29.33 March7.04.2×
JüchenNorth Rhine-Westphalia, Germany1 39.93 March9.64.2×
LisieuxNormandy, France1 28.42 March6.94.1×
Mont-de-MarsanNew Aquitaine, France1 31.83 March7.84.1×
RambouilletÎle-de-France, France2 31.72 March7.84.1×
MulhouseGrand Est, France2 45.73 March11.34.0×
NysaOpole Voivodeship, Poland3 62.72 March15.64.0×
BendorfRheinland-Pfalz, Germany1 25.73 March6.54.0×
MelunÎle-de-France, France2 35.03 March8.93.9×
KrosnoSubcarpathia, Poland3 55.12 March14.13.9×
ÉpinalGrand Est, France2 35.53 March9.13.9×
SarcellesÎle-de-France, France2 33.92 March8.73.9×
ReutlingenBaden-Wurttemberg, Germany2 38.53 March9.93.9×
DreuxCentre-Val de Loire, France2 30.32 March7.93.8×
DomontÎle-de-France, France2 26.72 March7.03.8×
ChartresCentre-Val de Loire, France2 32.33 March8.53.8×
MarseilleProvence-Alpes-Côte d'Azur, France3 31.95 March8.43.8×
ZlínZlín, Czechia3 56.43 March14.93.8×
Baden-BadenBaden-Wurttemberg, Germany2 29.13 March7.73.8×
StarachowiceŚwiętokrzyskie, Poland3 89.92 March23.83.8×
KonstanzBaden-Wurttemberg, Germany2 39.14 March10.43.8×
Villingen-SchwenningenBaden-Wurttemberg, Germany1 27.03 March7.23.8×
KroměřížZlín, Czechia3 47.53 March12.73.7×
HerrenbergBaden-Wurttemberg, Germany2 31.03 March8.33.7×
ReimsGrand Est, France2 31.63 March8.53.7×
RzeszówSubcarpathia, Poland4 91.01 March24.73.7×
AugustówPodlasie, Poland1 79.128 February21.63.7×
LindauBavaria, Germany2 38.84 March10.63.7×
RennesBrittany, France2 29.22 March8.03.7×
FriedrichshafenBaden-Wurttemberg, Germany2 40.34 March11.23.6×
Eggenstein-LeopoldshafenBaden-Wurttemberg, Germany2 30.23 March8.43.6×
TübingenBaden-Wurttemberg, Germany2 36.43 March10.23.6×
MunichBavaria, Germany2 34.93 March9.83.6×
Český TěšínMoravian-Silesian Region, Czechia3 65.82 March18.63.5×
KoblenzRheinland-Pfalz, Germany1 42.83 March12.13.5×
LunévilleGrand Est, France2 39.23 March11.13.5×
BonnNorth Rhine-Westphalia, Germany1 33.83 March9.63.5×
JasłoSubcarpathia, Poland3 59.02 March16.83.5×
Valašské MeziříčíZlín, Czechia3 67.62 March19.43.5×
MontbéliardBourgogne-Franche-Comté, France2 43.23 March12.43.5×
HraniceOlomouc Region, Czechia3 51.92 March15.03.5×
VitrollesProvence-Alpes-Côte d'Azur, France2 33.95 March9.83.5×
HaguenauGrand Est, France1 32.83 March9.53.5×
NamurWallonia, Belgium1 25.23 March7.33.5×
ArlesProvence-Alpes-Côte d'Azur, France2 34.14 March10.03.4×
LyonAuvergne-Rhône-Alpes, France2 34.44 March10.13.4×
StrasbourgGrand Est, France2 40.13 March11.83.4×
AlençonNormandy, France2 26.83 March7.93.4×
ParisÎle-de-France, France2 31.42 March9.33.4×
AnnecyAuvergne-Rhône-Alpes, France1 40.54 March12.13.3×
TarnówLesser Poland, Poland3 72.01 March21.63.3×
DaxNew Aquitaine, France2 36.33 March10.93.3×
KarvináMoravian-Silesian Region, Czechia2 66.62 March20.03.3×
RatingenNorth Rhine-Westphalia, Germany1 29.03 March8.83.3×
Saint-MaloBrittany, France1 25.72 March7.83.3×
RacibórzSilesia, Poland4 75.72 March23.03.3×
AvignonProvence-Alpes-Côte d'Azur, France2 33.54 March10.23.3×
Fos-sur-MerProvence-Alpes-Côte d'Azur, France1 26.53 March8.13.3×
BeauvaisHauts-de-France, France2 29.42 March9.03.3×
Saint-QuentinHauts-de-France, France2 28.03 March8.63.3×
BurghausenBavaria, Germany1 36.03 March11.13.2×
AugsburgBavaria, Germany1 35.03 March10.83.2×
Biberach an der RißBaden-Wurttemberg, Germany2 33.53 March10.43.2×
ÉvreuxNormandy, France1 27.92 March8.73.2×
ManosqueProvence-Alpes-Côte d'Azur, France1 28.85 March9.03.2×
SolingenNorth Rhine-Westphalia, Germany1 29.43 March9.23.2×
SallanchesAuvergne-Rhône-Alpes, France3 43.23 March13.63.2×
VannesBrittany, France1 26.92 March8.53.2×
CreilHauts-de-France, France2 30.52 March9.73.1×
NeuwiedRheinland-Pfalz, Germany1 40.73 March13.03.1×
AalenBaden-Wurttemberg, Germany1 30.33 March9.73.1×
DüsseldorfNorth Rhine-Westphalia, Germany1 31.73 March10.23.1×
HodonínSouth Moravian, Czechia3 48.73 March15.73.1×
PforzheimBaden-Wurttemberg, Germany2 28.03 March9.13.1×
Neu-UlmBavaria, Germany1 34.43 March11.23.1×
KölnNorth Rhine-Westphalia, Germany1 33.03 March10.83.1×
GardanneProvence-Alpes-Côte d'Azur, France3 32.95 March10.83.0×
NancyGrand Est, France2 35.03 March11.53.0×
KrefeldNorth Rhine-Westphalia, Germany2 35.33 March11.63.0×
DieppeNormandy, France1 25.72 March8.63.0×
BohumínMoravian-Silesian Region, Czechia3 76.32 March25.73.0×
WawerMazovia, Poland4 54.71 March18.53.0×
OstravaMoravian-Silesian Region, Czechia3 63.12 March21.42.9×
KrapkowiceOpole Voivodeship, Poland2 52.72 March17.92.9×
MielecSubcarpathia, Poland3 67.71 March23.02.9×
CoulommiersÎle-de-France, France1 34.42 March11.72.9×
FilderstadtBaden-Wurttemberg, Germany1 31.73 March10.82.9×
BogatyniaLower Silesia, Poland2 39.32 March13.42.9×
ŁaskŁódź Voivodeship, Poland2 95.01 March32.52.9×
TřinecMoravian-Silesian Region, Czechia3 56.42 March19.32.9×
Sainte-Geneviève-des-BoisÎle-de-France, France1 37.62 March12.92.9×
Le HavreNormandy, France1 25.02 March8.62.9×
TrierRheinland-Pfalz, Germany1 32.13 March11.12.9×
BadenLower Austria, Austria1 26.32 March9.12.9×
PřerovOlomouc Region, Czechia2 53.23 March18.52.9×
MalackyBratislava Region, Slovakia2 46.03 March16.12.9×
SaarbrückenSaarland, Germany1 28.03 March9.82.9×
TraunreutBavaria, Germany1 30.83 March10.82.9×
AmiensHauts-de-France, France1 26.52 March9.32.8×
LudwigsburgBaden-Wurttemberg, Germany1 31.63 March11.12.8×
MetzGrand Est, France1 27.63 March9.72.8×
KłodzkoLower Silesia, Poland3 85.92 March30.22.8×
RouenNormandy, France1 27.82 March9.82.8×
KarlsruheBaden-Wurttemberg, Germany2 29.53 March10.52.8×
HattingenNorth Rhine-Westphalia, Germany1 27.53 March9.92.8×
KehlBaden-Wurttemberg, Germany2 30.73 March11.12.8×
KaliszGreater Poland, Poland2 90.11 March32.62.8×
OpavaMoravian-Silesian Region, Czechia3 51.62 March18.72.8×
HavířovMoravian-Silesian Region, Czechia3 64.02 March23.22.8×
KelheimBavaria, Germany1 27.53 March10.02.8×
BéthuneHauts-de-France, France2 27.92 March10.22.7×
DębicaSubcarpathia, Poland3 73.21 March26.82.7×
UlmBaden-Wurttemberg, Germany1 34.33 March12.62.7×
KladnoCentral Bohemia, Czechia2 36.22 March13.42.7×
JarosławSubcarpathia, Poland2 62.61 March23.22.7×
ŽideniceSouth Moravian, Czechia1 45.83 March17.02.7×
GapProvence-Alpes-Côte d'Azur, France1 27.24 March10.12.7×
WrocławLower Silesia, Poland1 65.62 March24.42.7×
ZamośćLublin, Poland3 62.328 February23.22.7×
SenicaTrnava Region, Slovakia2 43.73 March16.32.7×
DuisburgNorth Rhine-Westphalia, Germany1 28.63 March10.72.7×
IngolstadtBavaria, Germany1 34.13 March12.82.7×
StuttgartBaden-Wurttemberg, Germany2 32.23 March12.32.6×
BratislavaBratislava Region, Slovakia1 37.93 March14.52.6×
OtwockMazovia, Poland1 80.82 March31.22.6×
PerchtoldsdorfLower Austria, Austria3 33.72 March13.12.6×
Novo MestoUrban Municipality of Novo Mesto, Slovenia2 46.53 March18.22.6×
LiberecLiberec Region, Czechia2 36.12 March14.22.5×
BrnoSouth Moravian, Czechia2 39.43 March15.62.5×
WuppertalNorth Rhine-Westphalia, Germany1 26.03 March10.32.5×
VenloLimburg, The Netherlands1 25.23 March10.02.5×
JihlavaVysocina, Czechia3 39.33 March15.62.5×
Czechowice-DziedziceSilesia, Poland1 70.73 March28.32.5×
ŻyrardówMazovia, Poland2 60.82 March24.52.5×
PardubicePardubice Region, Czechia2 43.43 March17.52.5×
ViennaVienna, Austria3 31.72 March12.92.5×
KranjUrban Municipality of Kranj, Slovenia3 40.53 March16.52.5×
České BudějoviceSouth Bohemian Region, Czechia2 35.13 March14.32.5×
TrebišovKošice Region, Slovakia1 51.64 March21.12.4×
BihaćFederation of B&H, Bosnia and Herzegovina1 72.84 March29.82.4×
EssenNorth Rhine-Westphalia, Germany1 25.23 March10.42.4×
RadomMazovia, Poland3 58.028 February24.02.4×
LublinLublin, Poland2 58.01 March24.02.4×
WarsteinNorth Rhine-Westphalia, Germany1 25.11 March10.42.4×
KatowiceSilesia, Poland2 57.92 March24.02.4×
KošiceKošice Region, Slovakia1 50.84 March21.42.4×
AnsbachBavaria, Germany1 27.53 March11.62.4×
HumennéPrešov Region, Slovakia1 50.74 March21.42.4×
AnconaThe Marches, Italy1 33.73 March14.32.4×
Kędzierzyn-KoźleOpole Voivodeship, Poland2 48.31 March20.52.4×
Jelenia GóraLower Silesia, Poland2 55.22 March23.52.3×
SpeyerRheinland-Pfalz, Germany1 31.34 March13.52.3×
KrakówLesser Poland, Poland2 62.83 March27.32.3×
DěčínÚstí nad Labem Region, Czechia1 50.82 March22.12.3×
PraguePrague, Czechia1 34.62 March15.12.3×
TrnavaTrnava Region, Slovakia1 36.43 March15.92.3×
ŁódźŁódź Voivodeship, Poland1 55.82 March24.52.3×
MödlingLower Austria, Austria1 28.22 March12.42.3×
KlosterneuburgLower Austria, Austria2 32.62 March14.52.2×
DillingenSaarland, Germany1 26.53 March11.82.2×
KutnoŁódź Voivodeship, Poland1 64.92 March28.92.2×
Bielsko-BialaSilesia, Poland1 70.22 March31.32.2×
BerounCentral Bohemia, Czechia1 43.92 March19.62.2×
Devínska Nová VesBratislava Region, Slovakia1 32.73 March14.62.2×
PassauBavaria, Germany1 30.63 March13.72.2×
ZnojmoSouth Moravian, Czechia2 38.13 March17.12.2×
ŻaryLubusz, Poland2 35.42 March15.92.2×
KielceŚwiętokrzyskie, Poland1 53.22 March23.92.2×
DortmundNorth Rhine-Westphalia, Germany1 27.73 March12.52.2×
Klagenfurt am WörtherseeCarinthia, Austria1 27.82 March12.62.2×
KomárnoNitra Region, Slovakia1 33.73 March15.32.2×
KadaňÚstí nad Labem Region, Czechia2 31.32 March14.32.2×
GreizThuringia, Germany2 25.92 March12.02.2×
WłocławekKujawsko-Pomorskie, Poland2 75.028 February34.92.1×
OlomoucOlomouc Region, Czechia1 42.33 March19.82.1×
NiskoSubcarpathia, Poland1 52.12 March24.42.1×
SaalfeldThuringia, Germany2 26.22 March12.32.1×
SteyrUpper Austria, Austria1 25.72 March12.12.1×
Zielona GóraLubusz, Poland1 32.22 March15.22.1×
SninaPrešov Region, Slovakia1 27.74 March13.12.1×
PezinokBratislava Region, Slovakia1 32.63 March15.52.1×
SenecBratislava Region, Slovakia1 32.93 March15.72.1×
ČadcaŽilina Region, Slovakia1 42.83 March20.52.1×
Hradec KrálovéHradec Králové Region, Czechia1 40.53 March19.42.1×
Jastrzębie ZdrójSilesia, Poland2 59.11 March28.42.1×
ŁukówLublin, Poland1 42.51 March20.52.1×
BardejovPrešov Region, Slovakia2 37.24 March18.02.1×
LęborkPomerania, Poland1 46.028 February22.52.0×
TrenčínTrenčín Region, Slovakia1 39.43 March19.42.0×
PrešovPrešov Region, Slovakia1 45.44 March22.42.0×
HagenNorth Rhine-Westphalia, Germany1 25.43 March12.62.0×
MostÚstí nad Labem Region, Czechia1 34.22 March17.12.0×
WeidenBavaria, Germany1 25.23 March12.62.0×

Daily means in µg/m³. Usual: the city's median for this time of year (its days within 21 days of the date, every year, leaving out the week around it). Above usual: its highest day against that.

Against other episodes in France and Germany

Number 2 of 18 episodes in France and Germany since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 18.

Use this page

SmogRank, Central Europe, February and March 2023: 274 cities with PM2.5 at twice their usual or more, 28 February to 4 March 2023, smogrank.com/episodes/2023-02-central-europe-2 (accessed 2 October 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.

An episode is a run of days when many cities close to each other (four or more within 350 km on a day, 8 or more in all) each had a daily PM2.5 mean of at least 25 µg/m³ and at least 2 times their usual for that time of year. Found in our own measurements, not picked by hand. How we find episodes. Values are each city's daily mean of its own monitors; causes are the usual kinds for a pattern like this, not a confirmed source.