SmogRank / Episodes / Poland

Eastern Europe, January 2025

For 2 days, from 22 to 23 January 2025, 123 cities in Poland, Germany, France and 7 more countries had PM2.5 at least twice their usual for the time of year. The worst reading was Żywiec, Silesia, Poland: 145.0 µg/m³ on 22 January, about 4.1× its usual 35.6.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached123in 10 countries
Days222 to 23 January 2025
Worst day22 January114 cities counted
Furthest above usual6.0×Liptovský Mikuláš

Day by day

22 January 114 cities at twice their usual or more
NurembergAnsbachIngolstadtMarktredwitzWeidenSchwandorf in BayernKelheimSaalfeldSuhlMeiningenWürzburgAugsburgErfurtWeimarJenaAalenGreizLauda-KönigshofenGeraSokolovMunichEisenachStarnbergNeu-UlmWeißenfelsSondershausenFuldaAltenburgHalle (Saale)HeilbronnAschaffenburgDuderstadtBiberach an der RißKempten (Allgäu)GroßostheimLudwigsburgWitzenhausenPilsenTraunreutKadaňBurghausenBernburgWernigerodeKöthenHalberstadtGöttingenBitterfeld-WolfenHanau am MainKasselGoslarInnsbruckDessauPassauWieslochMagdeburgBad WildungenUslarHerrenbergLindauMostLitvínovSalzburgSalzgitterFriedrichshafenWittenbergBraunschweigBurg bei MagdeburgKönigstein im TaunusSaalfelden am Steinernen MeerHildesheimWolfsburgTepliceKonstanzWetzlarBerounKladnoÚstí nad LabemBaden-BadenHannoverBrandenburg an der HavelVillingen-SchwenningenLuckenwaldeHansestadt SalzwedelWelsDěčínPragueRintelnPotsdamNetphenWarsteinČeské BudějoviceTraunLinzWittenbergeNauenAnsfeldenKleinmachnowTeltowFalkenseeZürichBlankenfelde-MahlowKehlLubnjowBielefeldWalsrodeStrasbourgKönigs WusterhausenSteyrSoestBerlinNeuruppinKoblenzLüneburgBendorfFreiburgOranienburgCottbusMladá BoleslavNeuenhagenBernau bei BerlinLüdenscheidUnnaBogatyniaStrausbergSchwerinAmstettenMüllheimLiberecOytenSchwerteLörrachBellinzonaHamburgOsnabrückHagenBuxtehudeDortmundBremenBaselSaarbrückenHalstenbekBonnMünsterLübeckWismarDelmenhorstGüstrowLuganoMulhouseDattelnVölklingenWuppertalKlagenfurt am WörtherseeLubańHattingenLeverkusenKölnNeubrandenburgGoriziaDillingenGelsenkirchenRostockTrierEssenPulheimOldenburgItzehoePardubiceBernWolfsbergRatingenBottropKranjDüsseldorfSankt PöltenHradec KrálovéOberhausenBremerhavenJelenia GóraFriesoytheDuisburgKielLunévilleLingenKoperBorkenMontbéliardLjubljanaCuxhavenJüchenKrefeldZnojmoÉpinalWilhelmshavenGrazMönchengladbachJülichWeselEnschedeStralsundMetzLuxembourgNancyEsch-sur-AlzetteTrbovljeAachenEupenVenloPerchtoldsdorfBadenKlosterneuburgCeljeMödlingHeerlenViennaRijekaFlensburgMariborBrnoEmdenŽideniceKłodzkoVenrayNovo MestoPtujLiègeNijmegenFlémalle-HauteGroningenMarche-en-FamenneSallanchesMalackyDevínska Nová VesHouthalenEindhovenHasseltOlomoucBratislavaBarneveldAndenneKroměřížAlbertvillePezinokDoleSenicaMolPřerovKołobrzegSaint-DizierNamurSenecTilburgBrzegAarschotZlínTrnavaUtrechtIJsselsteinKoprivnicaChambérySereďBredaOpavaBihaćRixensartGyőrCharleroiValašské MeziříčíZaventemMedemblikMechelenBourg-en-BresseTrenčínGrimbergenBrusselsKapellenAntwerpWillebroekMeylanStabroekNitraZwijndrechtRacibórzGrenobleKędzierzyn-KoźleRotterdamOstravaBeverenHillegomPúchovSchiedamFrýdek-MístekReimsBohumínKomárnoVeszprémHavířovVillefontaineMonsMeyzieuThe HagueJastrzębie ZdrójVillefranche-sur-SaôneLyonČeský TěšínTřinecEvergemRomans-sur-IsèreBydgoszczValenciennesBytówEsztergomDenainAuxerreTournaiValenceKatowiceSaint-QuentinSaint-ÉtienneKortrijkKościerzynaDouaiToruńCoulommiersRadomskoWłocławekMoulinsTravnikVichyLučenecMontargisParisDomontGyöngyösClermont-FerrandÉtampesPopradMontluçonRambouilletKazincbarcikaFutogNovi SadMiskolcTarnówAurillacÉvreuxPrešovBardejovRodezDieppeKošiceDębicaValjevoMielecJasłoObrenovacZemunSremčicaBelgradeLazarevacVranov nad TopľouTrebišovPančevoLimogesNyíregyházaHumennéSmederevoSninaGraysDartfordAlençonDagenhamKragujevacPoitiersMontaubanPérigueuxJarosławCaenAngoulêmeNiortBorTomaszów LubelskiBiałystokNegotinLormontBordeauxCluj-NapocaCherbourgDejRennesSaint HelierCraiovaKaunasVannesZielona GóraČadcaPartizánskeSchwäbisch HallTübingenUlmWormsNorthamptonBanja LukaElblągŚwiecieRiedstadtBambergIzegemMaarssenCiechanówLiberpolisGdyniaDunaújvárosSzegedGorzów WielkopolskiPłockHandlováŽilinaZvolenAnnemasseLimburg an der LahnReutlingenOlsztynOpoleWrocławPrievidzaGießenHeidelbergKarlsruheMarburg an der LahnMichelstadtNordhausenRüsselsheim am MainRzeszówKrakówSzczecinLudwigshafen am RheinMannheimNeuwiedSiedlceKaliszSulechówBad KreuznachSchwedt (Oder)StuttgartGentMenenStarachowiceGdańskŁaskPoznańBanská BystricaŽiar nad HronomBensheimDarmstadtFrankfurt (Oder)Frankfurt am MainSpeyerRadomCzechowice-DziedziceZgierzRouenEschbornLochristiLublinNiskoSkarżysko-KamiennaSuwałkiKrotoszynEggenstein-LeopoldshafenGiżyckoKrosnoPécsKutnoŁódźHattersheimKaiserslauternLampertheimMühlhausenWiesbadenAugustówLegionowoAmiensBéthuneLondonEłkKonstancin-JeziornaPruszkówRužomberokLouviersEisenhüttenstadtOtwockZamośćFilderstadtCalaisCreilMainzPforzheimRoeselareKielceWawerDunkirkLe HavreMaldegemBexleyWarsawŻaryPrzemyślŚwinoujścieBoulogne-sur-MerThionvilleŻyrardówKoksijdeMartinŻywiecBielsko-BialaLiptovský Mikuláš
19 Jan20212223242526
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

ŻywiecŻywiec, 19 January: 88.7 µg/m³, 2.5× usualŻywiec, 20 January: 115.0 µg/m³, 3.2× usualŻywiec, 21 January: 100.0 µg/m³, 2.8× usualŻywiec, 22 January: 145.0 µg/m³, 4.1× usualŻywiec, 23 January: 56.9 µg/m³, 1.6× usualŻywiec, 24 January: 37.7 µg/m³, 1.1× usualŻywiec, 25 January: 17.6 µg/m³, 0.5× usualŻywiec, 26 January: 18.7 µg/m³, 0.5× usualBielsko-BialaBielsko-Biala, 19 January: 80.3 µg/m³, 3.2× usualBielsko-Biala, 20 January: 74.9 µg/m³, 3.0× usualBielsko-Biala, 21 January: 57.6 µg/m³, 2.3× usualBielsko-Biala, 22 January: 112.0 µg/m³, 4.5× usualBielsko-Biala, 23 January: 62.7 µg/m³, 2.5× usualBielsko-Biala, 24 January: 18.0 µg/m³, 0.7× usualBielsko-Biala, 25 January: 15.9 µg/m³, 0.6× usualBielsko-Biala, 26 January: 14.8 µg/m³, 0.6× usualKrotoszynKrotoszyn, 19 January: 107.0 µg/m³, 3.6× usualKrotoszyn, 20 January: 67.9 µg/m³, 2.3× usualKrotoszyn, 21 January: 72.7 µg/m³, 2.5× usualKrotoszyn, 22 January: 81.5 µg/m³, 2.8× usualKrotoszyn, 23 January: 23.4 µg/m³, 0.8× usualKrotoszyn, 24 January: 23.5 µg/m³, 0.8× usualKrotoszyn, 25 January: 17.6 µg/m³, 0.6× usualKrotoszyn, 26 January: 27.8 µg/m³, 0.9× usualLiptovský MikulášLiptovský Mikuláš, 19 January: 32.5 µg/m³, 2.2× usualLiptovský Mikuláš, 20 January: 42.9 µg/m³, 2.9× usualLiptovský Mikuláš, 21 January: 99.2 µg/m³, 6.6× usualLiptovský Mikuláš, 22 January: 89.9 µg/m³, 6.0× usualLiptovský Mikuláš, 23 January: 17.6 µg/m³, 1.2× usualLiptovský Mikuláš, 24 January: 18.1 µg/m³, 1.2× usualLiptovský Mikuláš, 25 January: 23.5 µg/m³, 1.6× usualLiptovský Mikuláš, 26 January: 9.1 µg/m³, 0.6× usualKielceKielce, 19 January: 98.2 µg/m³, 5.2× usualKielce, 20 January: 91.5 µg/m³, 4.8× usualKielce, 21 January: 73.6 µg/m³, 3.9× usualKielce, 22 January: 65.1 µg/m³, 3.4× usualKielce, 23 January: 20.8 µg/m³, 1.1× usualKielce, 24 January: 27.9 µg/m³, 1.5× usualKielce, 25 January: 19.6 µg/m³, 1.0× usualKielce, 26 January: 22.9 µg/m³, 1.2× usualKrakówKraków, 19 January: 65.2 µg/m³, 2.5× usualKraków, 20 January: 91.2 µg/m³, 3.6× usualKraków, 21 January: 58.9 µg/m³, 2.3× usualKraków, 22 January: 60.6 µg/m³, 2.4× usualKraków, 23 January: 53.4 µg/m³, 2.1× usualKraków, 24 January: 29.6 µg/m³, 1.2× usualKraków, 25 January: 37.8 µg/m³, 1.5× usualKraków, 26 January: 27.0 µg/m³, 1.1× usualOpoleOpole, 19 January: 82.1 µg/m³, 3.6× usualOpole, 20 January: 25.8 µg/m³, 1.1× usualOpole, 21 January: 36.7 µg/m³, 1.6× usualOpole, 22 January: 52.4 µg/m³, 2.3× usualOpole, 23 January: 19.6 µg/m³, 0.9× usualOpole, 24 January: 31.5 µg/m³, 1.4× usualOpole, 25 January: 24.6 µg/m³, 1.1× usualOpole, 26 January: 34.0 µg/m³, 1.5× usualSkarżysko-KamiennaSkarżysko-Kamienna, 19 January: 67.2 µg/m³, 2.2× usualSkarżysko-Kamienna, 20 January: 67.4 µg/m³, 2.3× usualSkarżysko-Kamienna, 21 January: 74.8 µg/m³, 2.5× usualSkarżysko-Kamienna, 22 January: 80.9 µg/m³, 2.7× usualSkarżysko-Kamienna, 23 January: 54.7 µg/m³, 1.8× usualSkarżysko-Kamienna, 24 January: 42.3 µg/m³, 1.4× usualSkarżysko-Kamienna, 25 January: 23.4 µg/m³, 0.8× usualSkarżysko-Kamienna, 26 January: 38.1 µg/m³, 1.3× usualŁaskŁask, 19 January: 80.6 µg/m³, 3.5× usualŁask, 20 January: 59.6 µg/m³, 2.6× usualŁask, 21 January: 40.2 µg/m³, 1.7× usualŁask, 22 January: 59.2 µg/m³, 2.6× usualŁask, 23 January: 36.8 µg/m³, 1.6× usualŁask, 24 January: 22.2 µg/m³, 1.0× usualŁask, 25 January: 17.8 µg/m³, 0.8× usualŁask, 26 January: 22.2 µg/m³, 1.0× usualNiskoNisko, 19 January: 45.8 µg/m³, 2.4× usualNisko, 20 January: 62.5 µg/m³, 3.2× usualNisko, 21 January: 77.9 µg/m³, 4.0× usualNisko, 22 January: 51.4 µg/m³, 2.7× usualNisko, 23 January: 22.9 µg/m³, 1.2× usualNisko, 24 January: 33.0 µg/m³, 1.7× usualNisko, 25 January: 19.5 µg/m³, 1.0× usualNisko, 26 January: 13.5 µg/m³, 0.7× usualKaliszKalisz, 19 January: 77.5 µg/m³, 3.3× usualKalisz, 20 January: 43.1 µg/m³, 1.8× usualKalisz, 21 January: 42.5 µg/m³, 1.8× usualKalisz, 22 January: 58.7 µg/m³, 2.5× usualKalisz, 23 January: 21.0 µg/m³, 0.9× usualKalisz, 24 January: 20.5 µg/m³, 0.9× usualKalisz, 25 January: 18.0 µg/m³, 0.8× usualKalisz, 26 January: 22.2 µg/m³, 0.9× usualStarachowiceStarachowice, 19 January: 63.0 µg/m³, 2.9× usualStarachowice, 20 January: 70.7 µg/m³, 3.3× usualStarachowice, 21 January: 70.5 µg/m³, 3.3× usualStarachowice, 22 January: 54.6 µg/m³, 2.5× usualStarachowice, 23 January: 21.8 µg/m³, 1.0× usualStarachowice, 24 January: 26.1 µg/m³, 1.2× usualStarachowice, 25 January: 17.6 µg/m³, 0.8× usualStarachowice, 26 January: 21.4 µg/m³, 1.0× usualŁódźŁódź, 19 January: 46.7 µg/m³, 2.5× usualŁódź, 20 January: 69.7 µg/m³, 3.8× usualŁódź, 21 January: 39.9 µg/m³, 2.2× usualŁódź, 22 January: 53.2 µg/m³, 2.9× usualŁódź, 23 January: 36.9 µg/m³, 2.0× usualŁódź, 24 January: 24.9 µg/m³, 1.3× usualŁódź, 25 January: 20.0 µg/m³, 1.1× usualŁódź, 26 January: 25.8 µg/m³, 1.4× usualRzeszówRzeszów, 19 January: 45.8 µg/m³, 2.3× usualRzeszów, 20 January: 36.9 µg/m³, 1.9× usualRzeszów, 21 January: 67.9 µg/m³, 3.4× usualRzeszów, 22 January: 44.9 µg/m³, 2.3× usualRzeszów, 23 January: 13.5 µg/m³, 0.7× usualRzeszów, 24 January: 39.6 µg/m³, 2.0× usualRzeszów, 25 January: 13.8 µg/m³, 0.7× usualRzeszów, 26 January: 13.3 µg/m³, 0.7× usualPrzemyślPrzemyśl, 19 January: 39.3 µg/m³, 2.2× usualPrzemyśl, 20 January: 42.1 µg/m³, 2.3× usualPrzemyśl, 21 January: 57.0 µg/m³, 3.2× usualPrzemyśl, 22 January: 65.5 µg/m³, 3.6× usualPrzemyśl, 23 January: 26.6 µg/m³, 1.5× usualPrzemyśl, 24 January: 27.1 µg/m³, 1.5× usualPrzemyśl, 25 January: 24.3 µg/m³, 1.4× usualPrzemyśl, 26 January: 21.0 µg/m³, 1.2× usualWrocławWrocław, 19 January: 65.0 µg/m³, 3.3× usualWrocław, 20 January: 28.2 µg/m³, 1.4× usualWrocław, 21 January: 34.8 µg/m³, 1.7× usualWrocław, 22 January: 45.0 µg/m³, 2.3× usualWrocław, 23 January: 16.7 µg/m³, 0.8× usualWrocław, 24 January: 14.2 µg/m³, 0.7× usualWrocław, 25 January: 13.7 µg/m³, 0.7× usualWrocław, 26 January: 15.6 µg/m³, 0.8× usualCzechowice-DziedziceCzechowice-Dziedzice, 19 January: 40.8 µg/m³, 2.1× usualCzechowice-Dziedzice, 20 January: 35.8 µg/m³, 1.8× usualCzechowice-Dziedzice, 21 January: 31.5 µg/m³, 1.6× usualCzechowice-Dziedzice, 22 January: 53.5 µg/m³, 2.7× usualCzechowice-Dziedzice, 23 January: 37.4 µg/m³, 1.9× usualCzechowice-Dziedzice, 24 January: 29.9 µg/m³, 1.5× usualCzechowice-Dziedzice, 25 January: 32.2 µg/m³, 1.6× usualCzechowice-Dziedzice, 26 January: 30.7 µg/m³, 1.6× usualŻaryŻary, 19 January: 47.9 µg/m³, 4.1× usualŻary, 20 January: 29.5 µg/m³, 2.5× usualŻary, 21 January: 34.4 µg/m³, 3.0× usualŻary, 22 January: 41.9 µg/m³, 3.6× usualŻary, 23 January: 11.8 µg/m³, 1.0× usualŻary, 24 January: 7.3 µg/m³, 0.6× usualŻary, 25 January: 7.7 µg/m³, 0.7× usualŻary, 26 January: 8.8 µg/m³, 0.8× usualZielona GóraZielona Góra, 19 January: 46.9 µg/m³, 2.9× usualZielona Góra, 20 January: 38.4 µg/m³, 2.4× usualZielona Góra, 21 January: 24.3 µg/m³, 1.5× usualZielona Góra, 22 January: 32.6 µg/m³, 2.0× usualZielona Góra, 23 January: 15.3 µg/m³, 1.0× usualZielona Góra, 24 January: 8.5 µg/m³, 0.5× usualZielona Góra, 25 January: 5.7 µg/m³, 0.4× usualZielona Góra, 26 January: 10.9 µg/m³, 0.7× usualThionvilleThionville, 19 January: 30.9 µg/m³, 3.9× usualThionville, 20 January: 43.6 µg/m³, 5.5× usualThionville, 21 January: 36.9 µg/m³, 4.7× usualThionville, 22 January: 29.8 µg/m³, 3.8× usualThionville, 23 January: 12.0 µg/m³, 1.5× usualThionville, 24 January: 3.9 µg/m³, 0.5× usualThionville, 25 January: 5.2 µg/m³, 0.7× usualThionville, 26 January: 2.1 µg/m³, 0.3× usualMaldegemMaldegem, 19 January: 35.0 µg/m³, 3.7× usualMaldegem, 20 January: 43.5 µg/m³, 4.6× usualMaldegem, 21 January: 27.5 µg/m³, 2.9× usualMaldegem, 22 January: 33.1 µg/m³, 3.5× usualMaldegem, 23 January: 15.9 µg/m³, 1.7× usualMaldegem, 24 January: 5.9 µg/m³, 0.6× usualMaldegem, 25 January: 6.6 µg/m³, 0.7× usualMaldegem, 26 January: 6.0 µg/m³, 0.6× usualRoeselareRoeselare, 19 January: 35.4 µg/m³, 3.4× usualRoeselare, 20 January: 42.6 µg/m³, 4.1× usualRoeselare, 21 January: 32.2 µg/m³, 3.1× usualRoeselare, 22 January: 34.1 µg/m³, 3.3× usualRoeselare, 23 January: 17.4 µg/m³, 1.7× usualRoeselare, 24 January: 5.9 µg/m³, 0.6× usualRoeselare, 25 January: 9.9 µg/m³, 1.0× usualRoeselare, 26 January: 8.0 µg/m³, 0.8× usualMaarssenMaarssen, 19 January: 31.1 µg/m³, 2.5× usualMaarssen, 20 January: 41.5 µg/m³, 3.4× usualMaarssen, 21 January: 33.6 µg/m³, 2.7× usualMaarssen, 22 January: 25.3 µg/m³, 2.1× usualMaarssen, 23 January: 12.7 µg/m³, 1.0× usualMaarssen, 24 January: 6.9 µg/m³, 0.6× usualMaarssen, 25 January: 10.1 µg/m³, 0.8× usualMaarssen, 26 January: 9.9 µg/m³, 0.8× usualEisenhüttenstadtEisenhüttenstadt, 19 January: 34.6 µg/m³, 3.2× usualEisenhüttenstadt, 20 January: 41.1 µg/m³, 3.8× usualEisenhüttenstadt, 21 January: 21.0 µg/m³, 1.9× usualEisenhüttenstadt, 22 January: 33.5 µg/m³, 3.1× usualEisenhüttenstadt, 23 January: 16.1 µg/m³, 1.5× usualEisenhüttenstadt, 24 January: 5.3 µg/m³, 0.5× usualEisenhüttenstadt, 25 January: 5.0 µg/m³, 0.5× usualEisenhüttenstadt, 26 January: 6.6 µg/m³, 0.6× usualFilderstadtFilderstadt, 19 January: 29.8 µg/m³, 2.5× usualFilderstadt, 20 January: 37.0 µg/m³, 3.1× usualFilderstadt, 21 January: 40.2 µg/m³, 3.4× usualFilderstadt, 22 January: 37.5 µg/m³, 3.2× usualFilderstadt, 23 January: 8.8 µg/m³, 0.7× usualFilderstadt, 24 January: 5.8 µg/m³, 0.5× usualFilderstadt, 25 January: 8.6 µg/m³, 0.7× usualFilderstadt, 26 January: 3.7 µg/m³, 0.3× usualZamośćZamość, 19 January: 20.5 µg/m³, 1.1× usualZamość, 20 January: 57.4 µg/m³, 3.1× usualZamość, 21 January: 88.8 µg/m³, 4.8× usualZamość, 22 January: 57.9 µg/m³, 3.1× usualZamość, 23 January: 24.3 µg/m³, 1.3× usualZamość, 24 January: 29.6 µg/m³, 1.6× usualZamość, 25 January: 12.6 µg/m³, 0.7× usualZamość, 26 January: 11.6 µg/m³, 0.6× usualLublinLublin, 19 January: 20.9 µg/m³, 0.9× usualLublin, 20 January: 73.3 µg/m³, 3.2× usualLublin, 21 January: 80.1 µg/m³, 3.5× usualLublin, 22 January: 61.5 µg/m³, 2.7× usualLublin, 23 January: 27.1 µg/m³, 1.2× usualLublin, 24 January: 38.7 µg/m³, 1.7× usualLublin, 25 January: 23.3 µg/m³, 1.0× usualLublin, 26 January: 16.4 µg/m³, 0.7× usualOtwockOtwock, 19 January: 20.6 µg/m³, 0.8× usualOtwock, 20 January: 52.7 µg/m³, 2.1× usualOtwock, 21 January: 62.5 µg/m³, 2.5× usualOtwock, 22 January: 79.6 µg/m³, 3.1× usualOtwock, 23 January: 33.1 µg/m³, 1.3× usualOtwock, 24 January: 32.7 µg/m³, 1.3× usualOtwock, 25 January: 26.7 µg/m³, 1.0× usualOtwock, 26 January: 24.7 µg/m³, 1.0× usualŻyrardówŻyrardów, 19 January: 17.2 µg/m³, 0.8× usualŻyrardów, 20 January: 53.9 µg/m³, 2.7× usualŻyrardów, 21 January: 51.3 µg/m³, 2.5× usualŻyrardów, 22 January: 77.4 µg/m³, 3.8× usualŻyrardów, 23 January: 35.5 µg/m³, 1.7× usualŻyrardów, 24 January: 20.1 µg/m³, 1.0× usualŻyrardów, 25 January: 16.1 µg/m³, 0.8× usualŻyrardów, 26 January: 18.8 µg/m³, 0.9× usualWarsawWarsaw, 19 January: 16.3 µg/m³, 0.9× usualWarsaw, 20 January: 41.4 µg/m³, 2.2× usualWarsaw, 21 January: 49.2 µg/m³, 2.6× usualWarsaw, 22 January: 64.5 µg/m³, 3.5× usualWarsaw, 23 January: 32.4 µg/m³, 1.7× usualWarsaw, 24 January: 26.1 µg/m³, 1.4× usualWarsaw, 25 January: 23.0 µg/m³, 1.2× usualWarsaw, 26 January: 21.5 µg/m³, 1.2× usualLegionowoLegionowo, 19 January: 16.0 µg/m³, 0.8× usualLegionowo, 20 January: 54.4 µg/m³, 2.6× usualLegionowo, 21 January: 47.2 µg/m³, 2.3× usualLegionowo, 22 January: 60.8 µg/m³, 2.9× usualLegionowo, 23 January: 25.4 µg/m³, 1.2× usualLegionowo, 24 January: 20.0 µg/m³, 1.0× usualLegionowo, 25 January: 17.1 µg/m³, 0.8× usualLegionowo, 26 January: 17.5 µg/m³, 0.8× usualWawerWawer, 19 January: 14.8 µg/m³, 0.8× usualWawer, 20 January: 38.2 µg/m³, 2.2× usualWawer, 21 January: 49.6 µg/m³, 2.8× usualWawer, 22 January: 60.3 µg/m³, 3.4× usualWawer, 23 January: 27.7 µg/m³, 1.6× usualWawer, 24 January: 23.8 µg/m³, 1.3× usualWawer, 25 January: 19.5 µg/m³, 1.1× usualWawer, 26 January: 17.0 µg/m³, 1.0× usualKutnoKutno, 19 January: 24.8 µg/m³, 1.2× usualKutno, 20 January: 57.0 µg/m³, 2.7× usualKutno, 21 January: 48.6 µg/m³, 2.3× usualKutno, 22 January: 59.6 µg/m³, 2.9× usualKutno, 23 January: 48.2 µg/m³, 2.3× usualKutno, 24 January: 29.7 µg/m³, 1.4× usualKutno, 25 January: 19.7 µg/m³, 0.9× usualKutno, 26 January: 28.1 µg/m³, 1.4× usualGorzów WielkopolskiGorzów Wielkopolski, 19 January: 24.8 µg/m³, 1.4× usualGorzów Wielkopolski, 20 January: 58.4 µg/m³, 3.2× usualGorzów Wielkopolski, 21 January: 35.0 µg/m³, 1.9× usualGorzów Wielkopolski, 22 January: 40.7 µg/m³, 2.2× usualGorzów Wielkopolski, 23 January: 32.5 µg/m³, 1.8× usualGorzów Wielkopolski, 24 January: 14.1 µg/m³, 0.8× usualGorzów Wielkopolski, 25 January: 10.0 µg/m³, 0.5× usualGorzów Wielkopolski, 26 January: 14.4 µg/m³, 0.8× usualPoznańPoznań, 19 January: 29.7 µg/m³, 1.5× usualPoznań, 20 January: 57.2 µg/m³, 2.8× usualPoznań, 21 January: 41.7 µg/m³, 2.0× usualPoznań, 22 January: 52.4 µg/m³, 2.6× usualPoznań, 23 January: 26.9 µg/m³, 1.3× usualPoznań, 24 January: 18.3 µg/m³, 0.9× usualPoznań, 25 January: 15.9 µg/m³, 0.8× usualPoznań, 26 January: 21.9 µg/m³, 1.1× usualKonstancin-JeziornaKonstancin-Jeziorna, 19 January: 14.3 µg/m³, 0.8× usualKonstancin-Jeziorna, 20 January: 39.5 µg/m³, 2.1× usualKonstancin-Jeziorna, 21 January: 48.7 µg/m³, 2.6× usualKonstancin-Jeziorna, 22 January: 55.7 µg/m³, 3.0× usualKonstancin-Jeziorna, 23 January: 25.8 µg/m³, 1.4× usualKonstancin-Jeziorna, 24 January: 20.8 µg/m³, 1.1× usualKonstancin-Jeziorna, 25 January: 18.5 µg/m³, 1.0× usualKonstancin-Jeziorna, 26 January: 17.2 µg/m³, 0.9× usualRadomRadom, 19 January: 31.0 µg/m³, 1.5× usualRadom, 20 January: 48.4 µg/m³, 2.3× usualRadom, 21 January: 53.4 µg/m³, 2.6× usualRadom, 22 January: 53.5 µg/m³, 2.6× usualRadom, 23 January: 24.7 µg/m³, 1.2× usualRadom, 24 January: 22.4 µg/m³, 1.1× usualRadom, 25 January: 17.1 µg/m³, 0.8× usualRadom, 26 January: 19.0 µg/m³, 0.9× usualŚwiecieŚwiecie, 19 January: 13.0 µg/m³, 0.9× usualŚwiecie, 20 January: 40.2 µg/m³, 2.7× usualŚwiecie, 21 January: 49.5 µg/m³, 3.3× usualŚwiecie, 22 January: 29.3 µg/m³, 1.9× usualŚwiecie, 23 January: 31.0 µg/m³, 2.1× usualŚwiecie, 24 January: 17.6 µg/m³, 1.2× usualŚwiecie, 25 January: 13.5 µg/m³, 0.9× usualŚwiecie, 26 January: 23.0 µg/m³, 1.5× usualSzczecinSzczecin, 19 January: 24.4 µg/m³, 1.6× usualSzczecin, 20 January: 47.4 µg/m³, 3.1× usualSzczecin, 21 January: 25.8 µg/m³, 1.7× usualSzczecin, 22 January: 36.0 µg/m³, 2.4× usualSzczecin, 23 January: 31.3 µg/m³, 2.1× usualSzczecin, 24 January: 11.2 µg/m³, 0.7× usualSzczecin, 25 January: 7.4 µg/m³, 0.5× usualSzczecin, 26 January: 10.5 µg/m³, 0.7× usualSulechówSulechów, 19 January: 24.6 µg/m³, 1.9× usualSulechów, 20 January: 46.0 µg/m³, 3.5× usualSulechów, 21 January: 22.0 µg/m³, 1.7× usualSulechów, 22 January: 32.9 µg/m³, 2.5× usualSulechów, 23 January: 17.7 µg/m³, 1.4× usualSulechów, 24 January: 8.7 µg/m³, 0.7× usualSulechów, 25 January: 8.3 µg/m³, 0.6× usualSulechów, 26 January: 11.1 µg/m³, 0.9× usualSiedlceSiedlce, 19 January: 9.1 µg/m³, 0.5× usualSiedlce, 20 January: 41.0 µg/m³, 2.3× usualSiedlce, 21 January: 45.4 µg/m³, 2.6× usualSiedlce, 22 January: 41.2 µg/m³, 2.4× usualSiedlce, 23 January: 20.8 µg/m³, 1.2× usualSiedlce, 24 January: 21.2 µg/m³, 1.2× usualSiedlce, 25 January: 20.9 µg/m³, 1.2× usualSiedlce, 26 January: 17.1 µg/m³, 1.0× usualŚwinoujścieŚwinoujście, 19 January: 22.2 µg/m³, 2.3× usualŚwinoujście, 20 January: 43.4 µg/m³, 4.5× usualŚwinoujście, 21 January: 21.4 µg/m³, 2.2× usualŚwinoujście, 22 January: 35.3 µg/m³, 3.7× usualŚwinoujście, 23 January: 31.7 µg/m³, 3.3× usualŚwinoujście, 24 January: 10.1 µg/m³, 1.1× usualŚwinoujście, 25 January: 7.8 µg/m³, 0.8× usualŚwinoujście, 26 January: 9.8 µg/m³, 1.0× usualGdyniaGdynia, 19 January: 23.6 µg/m³, 1.5× usualGdynia, 20 January: 41.9 µg/m³, 2.6× usualGdynia, 21 January: 35.0 µg/m³, 2.2× usualGdynia, 22 January: 22.0 µg/m³, 1.4× usualGdynia, 23 January: 35.7 µg/m³, 2.2× usualGdynia, 24 January: 22.1 µg/m³, 1.4× usualGdynia, 25 January: 17.4 µg/m³, 1.1× usualGdynia, 26 January: 15.0 µg/m³, 0.9× usualFrankfurt (Oder)Frankfurt (Oder), 19 January: 24.1 µg/m³, 2.1× usualFrankfurt (Oder), 20 January: 41.0 µg/m³, 3.6× usualFrankfurt (Oder), 21 January: 21.5 µg/m³, 1.9× usualFrankfurt (Oder), 22 January: 29.5 µg/m³, 2.6× usualFrankfurt (Oder), 23 January: 16.4 µg/m³, 1.4× usualFrankfurt (Oder), 24 January: 5.5 µg/m³, 0.5× usualFrankfurt (Oder), 25 January: 4.6 µg/m³, 0.4× usualFrankfurt (Oder), 26 January: 7.1 µg/m³, 0.6× usualPłockPłock, 19 January: 13.5 µg/m³, 0.7× usualPłock, 20 January: 36.3 µg/m³, 2.0× usualPłock, 21 January: 39.1 µg/m³, 2.2× usualPłock, 22 January: 40.7 µg/m³, 2.2× usualPłock, 23 January: 32.8 µg/m³, 1.8× usualPłock, 24 January: 20.4 µg/m³, 1.1× usualPłock, 25 January: 15.9 µg/m³, 0.9× usualPłock, 26 January: 20.5 µg/m³, 1.1× usualZgierzZgierz, 19 January: no readingZgierz, 20 January: no readingZgierz, 21 January: 59.7 µg/m³, 2.1× usualZgierz, 22 January: 76.0 µg/m³, 2.7× usualZgierz, 23 January: 45.3 µg/m³, 1.6× usualZgierz, 24 January: 27.8 µg/m³, 1.0× usualZgierz, 25 January: 24.5 µg/m³, 0.9× usualZgierz, 26 January: 32.8 µg/m³, 1.2× usualRužomberokRužomberok, 19 January: 30.9 µg/m³, 1.6× usualRužomberok, 20 January: 36.5 µg/m³, 1.8× usualRužomberok, 21 January: 66.5 µg/m³, 3.3× usualRužomberok, 22 January: 61.6 µg/m³, 3.1× usualRužomberok, 23 January: 24.5 µg/m³, 1.2× usualRužomberok, 24 January: 22.7 µg/m³, 1.1× usualRužomberok, 25 January: 27.4 µg/m³, 1.4× usualRužomberok, 26 January: 18.3 µg/m³, 0.9× usualMartinMartin, 19 January: 18.1 µg/m³, 1.1× usualMartin, 20 January: 23.1 µg/m³, 1.4× usualMartin, 21 January: 39.2 µg/m³, 2.4× usualMartin, 22 January: 65.5 µg/m³, 4.0× usualMartin, 23 January: 19.1 µg/m³, 1.2× usualMartin, 24 January: 24.8 µg/m³, 1.5× usualMartin, 25 January: 24.9 µg/m³, 1.5× usualMartin, 26 January: 16.0 µg/m³, 1.0× usualPruszkówPruszków, 19 January: no readingPruszków, 20 January: no readingPruszków, 21 January: 50.7 µg/m³, 2.4× usualPruszków, 22 January: 62.5 µg/m³, 3.0× usualPruszków, 23 January: 28.7 µg/m³, 1.4× usualPruszków, 24 January: 21.6 µg/m³, 1.0× usualPruszków, 25 January: 17.9 µg/m³, 0.8× usualPruszków, 26 January: 19.1 µg/m³, 0.9× usualAugustówAugustów, 19 January: 19.6 µg/m³, 1.0× usualAugustów, 20 January: 17.1 µg/m³, 0.8× usualAugustów, 21 January: 42.6 µg/m³, 2.1× usualAugustów, 22 January: 59.8 µg/m³, 2.9× usualAugustów, 23 January: 47.3 µg/m³, 2.3× usualAugustów, 24 January: 40.8 µg/m³, 2.0× usualAugustów, 25 January: 35.6 µg/m³, 1.8× usualAugustów, 26 January: 31.4 µg/m³, 1.5× usualCiechanówCiechanów, 19 January: 12.8 µg/m³, 0.6× usualCiechanów, 20 January: 23.8 µg/m³, 1.2× usualCiechanów, 21 January: 54.3 µg/m³, 2.6× usualCiechanów, 22 January: 42.3 µg/m³, 2.1× usualCiechanów, 23 January: 26.2 µg/m³, 1.3× usualCiechanów, 24 January: 20.3 µg/m³, 1.0× usualCiechanów, 25 January: 17.7 µg/m³, 0.9× usualCiechanów, 26 January: 20.4 µg/m³, 1.0× usualOlsztynOlsztyn, 19 January: 14.1 µg/m³, 0.9× usualOlsztyn, 20 January: 23.9 µg/m³, 1.5× usualOlsztyn, 21 January: 49.8 µg/m³, 3.2× usualOlsztyn, 22 January: 33.7 µg/m³, 2.2× usualOlsztyn, 23 January: 30.8 µg/m³, 2.0× usualOlsztyn, 24 January: 24.9 µg/m³, 1.6× usualOlsztyn, 25 January: 24.0 µg/m³, 1.5× usualOlsztyn, 26 January: 28.1 µg/m³, 1.8× usualElblągElbląg, 19 January: 14.4 µg/m³, 0.9× usualElbląg, 20 January: 25.1 µg/m³, 1.6× usualElbląg, 21 January: 49.6 µg/m³, 3.2× usualElbląg, 22 January: 28.1 µg/m³, 1.8× usualElbląg, 23 January: 32.2 µg/m³, 2.1× usualElbląg, 24 January: 22.7 µg/m³, 1.5× usualElbląg, 25 January: 19.6 µg/m³, 1.3× usualElbląg, 26 January: 28.0 µg/m³, 1.8× usualEłkEłk, 19 January: 7.6 µg/m³, 0.5× usualEłk, 20 January: 15.5 µg/m³, 1.0× usualEłk, 21 January: 36.7 µg/m³, 2.3× usualEłk, 22 January: 47.8 µg/m³, 3.0× usualEłk, 23 January: 34.9 µg/m³, 2.2× usualEłk, 24 January: 22.8 µg/m³, 1.4× usualEłk, 25 January: 22.6 µg/m³, 1.4× usualEłk, 26 January: 21.2 µg/m³, 1.3× usualKrosnoKrosno, 19 January: 24.2 µg/m³, 1.9× usualKrosno, 20 January: 14.8 µg/m³, 1.2× usualKrosno, 21 January: 42.2 µg/m³, 3.3× usualKrosno, 22 January: 35.3 µg/m³, 2.8× usualKrosno, 23 January: 8.1 µg/m³, 0.6× usualKrosno, 24 January: 30.7 µg/m³, 2.4× usualKrosno, 25 January: 10.3 µg/m³, 0.8× usualKrosno, 26 January: 2.5 µg/m³, 0.2× usualŽilinaŽilina, 19 January: 19.5 µg/m³, 1.0× usualŽilina, 20 January: 23.0 µg/m³, 1.2× usualŽilina, 21 January: 37.8 µg/m³, 2.0× usualŽilina, 22 January: 40.3 µg/m³, 2.2× usualŽilina, 23 January: 23.9 µg/m³, 1.3× usualŽilina, 24 January: 25.0 µg/m³, 1.3× usualŽilina, 25 January: 30.2 µg/m³, 1.6× usualŽilina, 26 January: 19.8 µg/m³, 1.1× usualBanská BystricaBanská Bystrica, 19 January: 15.4 µg/m³, 1.0× usualBanská Bystrica, 20 January: 16.2 µg/m³, 1.1× usualBanská Bystrica, 21 January: 34.3 µg/m³, 2.2× usualBanská Bystrica, 22 January: 40.3 µg/m³, 2.6× usualBanská Bystrica, 23 January: 14.8 µg/m³, 1.0× usualBanská Bystrica, 24 January: 15.3 µg/m³, 1.0× usualBanská Bystrica, 25 January: 19.8 µg/m³, 1.3× usualBanská Bystrica, 26 January: 24.9 µg/m³, 1.6× usualBanja LukaBanja Luka, 19 January: 51.8 µg/m³, 0.9× usualBanja Luka, 20 January: 66.7 µg/m³, 1.1× usualBanja Luka, 21 January: 96.7 µg/m³, 1.7× usualBanja Luka, 22 January: 182.0 µg/m³, 3.1× usualBanja Luka, 23 January: 121.0 µg/m³, 2.1× usualBanja Luka, 24 January: 39.5 µg/m³, 0.7× usualBanja Luka, 25 January: 114.0 µg/m³, 2.0× usualBanja Luka, 26 January: 121.0 µg/m³, 2.1× usualČadcaČadca, 19 January: 28.2 µg/m³, 1.2× usualČadca, 20 January: 25.9 µg/m³, 1.1× usualČadca, 21 January: 35.6 µg/m³, 1.6× usualČadca, 22 January: 46.4 µg/m³, 2.0× usualČadca, 23 January: 18.8 µg/m³, 0.8× usualČadca, 24 January: 31.2 µg/m³, 1.4× usualČadca, 25 January: 20.9 µg/m³, 0.9× usualČadca, 26 January: 15.6 µg/m³, 0.7× usualPécsPécs, 19 January: 23.8 µg/m³, 1.4× usualPécs, 20 January: 20.3 µg/m³, 1.2× usualPécs, 21 January: 17.9 µg/m³, 1.1× usualPécs, 22 January: 25.9 µg/m³, 1.6× usualPécs, 23 January: 47.5 µg/m³, 2.9× usualPécs, 24 January: 13.8 µg/m³, 0.8× usualPécs, 25 January: 23.8 µg/m³, 1.4× usualPécs, 26 January: 23.8 µg/m³, 1.4× usual19 Jan20212223242526
The 60 cities with the highest readings of 123, 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
Liptovský Mikulᚎilina Region, Slovakia1 99.221 January15.06.6×
ThionvilleGrand Est, France1 43.620 January7.95.5×
KielceŚwiętokrzyskie, Poland1 98.219 January18.95.2×
ZamośćLublin, Poland1 88.821 January18.64.8×
MaldegemFlanders, Belgium1 43.520 January9.54.6×
ŚwinoujścieWest Pomerania, Poland2 43.420 January9.64.5×
Bielsko-BialaSilesia, Poland2 112.022 January24.94.5×
KoksijdeFlanders, Belgium1 35.620 January8.64.1×
RoeselareFlanders, Belgium1 42.620 January10.34.1×
ŻaryLubusz, Poland1 47.919 January11.64.1×
ŻywiecSilesia, Poland1 145.022 January35.64.1×
NiskoSubcarpathia, Poland1 77.921 January19.34.0×
Le HavreNormandy, France1 36.221 January9.14.0×
MartinŽilina Region, Slovakia1 65.522 January16.54.0×
ŻyrardówMazovia, Poland1 77.422 January20.33.8×
EisenhüttenstadtBrandenburg, Germany1 41.120 January10.83.8×
Eggenstein-LeopoldshafenBaden-Wurttemberg, Germany1 35.020 January9.23.8×
ŁódźŁódź Voivodeship, Poland1 69.720 January18.53.8×
Boulogne-sur-MerHauts-de-France, France1 30.122 January8.23.7×
PrzemyślSubcarpathia, Poland1 65.522 January18.03.6×
BensheimHesse, Germany1 40.020 January11.03.6×
KrotoszynGreater Poland, Poland1 107.019 January29.63.6×
OpoleOpole Voivodeship, Poland1 82.119 January23.03.6×
Frankfurt (Oder)Brandenburg, Germany1 41.020 January11.53.6×
KrakówLesser Poland, Poland2 91.220 January25.63.6×
LochristiFlanders, Belgium1 35.920 January10.13.6×
SulechówLubusz, Poland1 46.020 January13.03.5×
DunkirkHauts-de-France, France1 38.122 January10.83.5×
Schwedt (Oder)Brandenburg, Germany1 36.820 January10.53.5×
HattersheimHesse, Germany1 34.920 January10.03.5×
LublinLublin, Poland1 80.121 January23.03.5×
ŁaskŁódź Voivodeship, Poland1 80.619 January23.23.5×
WarsawMazovia, Poland1 64.522 January18.63.5×
BexleyEngland, United Kingdom1 27.722 January8.03.5×
RzeszówSubcarpathia, Poland1 67.921 January19.93.4×
FilderstadtBaden-Wurttemberg, Germany1 40.221 January11.83.4×
WawerMazovia, Poland1 60.322 January17.73.4×
CreilHauts-de-France, France1 34.020 January10.03.4×
LampertheimHesse, Germany1 39.320 January11.63.4×
MaarssenUtrecht, The Netherlands1 41.520 January12.33.4×
MenenFlanders, Belgium1 37.020 January11.03.4×
KrosnoSubcarpathia, Poland1 42.221 January12.63.3×
RužomberokŽilina Region, Slovakia1 66.521 January19.93.3×
LouviersNormandy, France1 29.921 January9.03.3×
GentFlanders, Belgium1 33.819 January10.23.3×
KaliszGreater Poland, Poland1 77.519 January23.63.3×
ŚwiecieKujawsko-Pomorskie, Poland1 49.521 January15.13.3×
StarachowiceŚwiętokrzyskie, Poland1 70.720 January21.63.3×
WiesbadenHesse, Germany1 34.320 January10.53.3×
PforzheimBaden-Wurttemberg, Germany1 33.522 January10.33.3×
WrocławLower Silesia, Poland1 65.019 January20.03.3×
BéthuneHauts-de-France, France1 31.820 January9.83.2×
ElblągWarmia-Masuria, Poland1 49.621 January15.33.2×
CalaisHauts-de-France, France1 32.222 January10.03.2×
DarmstadtHesse, Germany1 34.120 January10.63.2×
OlsztynWarmia-Masuria, Poland1 49.821 January15.63.2×
Gorzów WielkopolskiLubusz, Poland1 58.420 January18.33.2×
MainzRheinland-Pfalz, Germany1 37.822 January12.03.2×
SzczecinWest Pomerania, Poland2 47.420 January15.13.1×
Frankfurt am MainHesse, Germany1 37.521 January12.03.1×
OtwockMazovia, Poland1 79.622 January25.53.1×
AmiensHauts-de-France, France1 26.520 January8.53.1×
Banja LukaSrpska, Bosnia and Herzegovina1 182.022 January58.43.1×
GiżyckoWarmia-Masuria, Poland2 36.721 January11.83.1×
LondonEngland, United Kingdom1 26.222 January8.63.0×
Konstancin-JeziornaMazovia, Poland1 55.722 January18.43.0×
EłkWarmia-Masuria, Poland2 47.822 January15.83.0×
KarlsruheBaden-Wurttemberg, Germany1 38.620 January12.83.0×
Ludwigshafen am RheinRheinland-Pfalz, Germany1 37.921 January12.63.0×
PruszkówMazovia, Poland1 62.522 January21.13.0×
AugustówPodlasie, Poland2 59.822 January20.32.9×
MannheimBaden-Wurttemberg, Germany1 39.720 January13.52.9×
Zielona GóraLubusz, Poland1 46.919 January16.02.9×
EschbornHesse, Germany1 35.120 January12.02.9×
RiedstadtHesse, Germany1 34.720 January11.92.9×
LegionowoMazovia, Poland1 60.822 January20.92.9×
MühlhausenThuringia, Germany1 37.122 January12.82.9×
HeidelbergBaden-Wurttemberg, Germany1 33.820 January11.72.9×
BambergBavaria, Germany1 35.521 January12.32.9×
ReutlingenBaden-Wurttemberg, Germany1 34.620 January12.02.9×
KutnoŁódź Voivodeship, Poland2 59.622 January20.82.9×
PécsBaranya, Hungary1 47.523 January16.62.9×
KaiserslauternRheinland-Pfalz, Germany1 26.822 January9.42.9×
AnnemasseAuvergne-Rhône-Alpes, France1 35.320 January12.42.8×
GießenHesse, Germany1 33.521 January11.92.8×
PoznańGreater Poland, Poland1 57.220 January20.42.8×
GdańskPomerania, Poland1 38.421 January13.72.8×
ZgierzŁódź Voivodeship, Poland1 76.022 January27.82.7×
Czechowice-DziedziceSilesia, Poland1 53.522 January19.72.7×
WormsRheinland-Pfalz, Germany1 38.521 January14.22.7×
Skarżysko-KamiennaŚwiętokrzyskie, Poland1 80.922 January29.92.7×
Rüsselsheim am MainHesse, Germany1 33.220 January12.32.7×
RouenNormandy, France1 29.122 January10.82.7×
SuwałkiPodlasie, Poland2 38.622 January14.42.7×
IzegemFlanders, Belgium1 37.220 January14.02.7×
CiechanówMazovia, Poland1 54.321 January20.52.6×
Marburg an der LahnHesse, Germany1 29.421 January11.12.6×
Banská BystricaBanská Bystrica Region, Slovakia1 40.322 January15.32.6×
SpeyerRheinland-Pfalz, Germany1 35.122 January13.52.6×
SiedlceMazovia, Poland1 45.421 January17.52.6×
GdyniaPomerania, Poland1 41.920 January16.22.6×
Žiar nad HronomBanská Bystrica Region, Slovakia1 34.922 January13.52.6×
RadomMazovia, Poland1 53.522 January20.72.6×
UlmBaden-Wurttemberg, Germany1 32.020 January12.42.6×
Bad KreuznachRheinland-Pfalz, Germany1 33.122 January13.12.5×
StuttgartBaden-Wurttemberg, Germany1 32.021 January12.72.5×
MichelstadtHesse, Germany1 28.020 January11.22.5×
NeuwiedRheinland-Pfalz, Germany1 28.521 January11.62.5×
NordhausenThuringia, Germany1 29.321 January12.42.4×
Limburg an der LahnHesse, Germany1 27.321 January11.62.4×
TübingenBaden-Wurttemberg, Germany1 33.120 January14.12.3×
PrievidzaTrenčín Region, Slovakia1 33.722 January14.92.3×
PłockMazovia, Poland1 40.722 January18.12.2×
LiberpolisCounty of Osijek-Baranja, Croatia1 37.223 January16.72.2×
HandlováTrenčín Region, Slovakia1 29.422 January13.32.2×
DunaújvárosFejér, Hungary1 32.223 January14.62.2×
SzegedCsongrád, Hungary1 30.323 January13.82.2×
ŽilinaŽilina Region, Slovakia1 40.322 January18.62.2×
Schwäbisch HallBaden-Wurttemberg, Germany1 34.321 January15.92.2×
ZvolenBanská Bystrica Region, Slovakia1 37.222 January17.32.2×
ČadcaŽilina Region, Slovakia1 46.422 January22.82.0×
PartizánskeTrenčín Region, Slovakia1 27.222 January13.52.0×
NorthamptonEngland, United Kingdom1 27.222 January13.62.0×

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 Poland and Germany

Number 11 of 42 episodes in Poland and Germany since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 42.

Use this page

SmogRank, Eastern Europe, January 2025: 123 cities with PM2.5 at twice their usual or more, 22 to 23 January 2025, smogrank.com/episodes/2025-01-eastern-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.