SmogRank / Episodes / Germany

Europe, December 2023

For 6 days, from 4 to 9 December 2023, 134 cities in Germany, Czechia, Austria and 8 more countries had PM2.5 at least twice their usual for the time of year. The worst reading was Banja Luka, Srpska, Bosnia and Herzegovina: 115.0 µg/m³ on 5 December, about 2.3× its usual 49.9. Ended 9 December.

Few fires were detected near these cities on those days. Spreads like this usually come from still weather trapping smoke from heating, traffic and industry, or from dust.
Cities reached134in 11 countries
Days64 to 9 December 2023
Worst day6 December105 cities counted
Furthest above usual11×Stralsund

Day by day

6 December 105 cities at twice their usual or more
BratislavaGyőrCottbusVoitsbergEsztergomSalzburgBlankenfelde-MahlowAltenburgGyálWeidenSaalfelden am Steinernen MeerGreizSchwandorf in BayernMarktredwitzPotsdamWittenbergRevúcaGeraPécsWeißenfelsBrandenburg an der HavelHalle (Saale)KöthenJenaRijekaKazincbarcikaMunichSaalfeldMiskolcWeimarBurg bei MagdeburgNurembergStarnbergMagdeburgCoburgBambergErfurtČaňaSuhlHalberstadtAnsbachOettingen in BayernNordhausenBad WindsheimMeiningenBolzanoLaivesNovi SadMühlhausenHansestadt SalzwedelNyíregyházaEisenachBorgo ValsuganaSninaAalenGoslarKempten (Allgäu)BraunschweigWürzburgTrentoSalzgitterRoveretoLauda-KönigshofenGöttingenWitzenhausenFuldaBiberach an der RißBelgradeHildesheimPesaroAnconaFalconara MarittimaChiaravalleLindauKasselPorto Potenza PicenaJesiCivitanova MarcheHannoverHeilbronnFriedrichshafenAschaffenburgLudwigsburgFilderstadtStuttgartReutlingenGroßostheimMichelstadtHanau am MainHerrenbergMarburg an der LahnWieslochHeidelbergFrankfurt am MainRintelnPforzheimDarmstadtGießenBensheimEschbornSulzbachLampertheimMannheimKönigstein im TaunusLudwigshafen am RheinSpeyerRüsselsheim am MainEggenstein-LeopoldshafenKarlsruheVillingen-SchwenningenKlaipėdaOytenMainzWiesbadenBielefeldZürichBellinzonaBaden-BadenGiubiascoWarsteinBremenLuganoCapannoriLimburg an der LahnNetphenDelmenhorstSoestBad KreuznachLemwerderKaiserslauternKehlLa SpeziaFreiburgBremerhavenOsnabrückHöhr-GrenzhausenKoblenzBendorfOldenburgUnnaLüdenscheidNišBorgomaneroNeuwiedMüllheimLörrachSchwerteNeuenburg am RheinMünsterBöselHagenBaselDortmundWilhelmshavenFriesoytheAlessandriaDattelnMulhouseBonnHattingenWuppertalBernGelsenkirchenCrescentinoLingenKaunasCraiovaNaujoji AkmeneCairo MontenotteTurinBotevgradMentonMonacoContesNiceLiberpolisKošiceNitraVranov nad TopľouSarajevoKlagenfurt am WörtherseeZvolenCluj-NapocaDejWormsWolfsbergBanja LukaKolárovoŽiar nad HronomMahlowGrazHainburg an der DonauSenicaHandlováLeibnitzTrnavaBanská BystricaRužomberokHumennéTübingenKiefersfeldenBerlinDunaújvárosNauenWeizAmstettenTrenčínPrievidzaPartizánskeUlmTeltowSankt PöltenPrešovTraunreutTrostberg an der AlzViennaNeu-UlmBad VöslauGroß-EnzersdorfKlosterneuburgLubnjowWelsMödlingSankt ValentinBrnoAugsburgSteyrPragueTullnSmižanySpišská Nová VesKleinmachnowLiberecLinzMladá BoleslavHradec KrálovéNeuenhagenSchöneichePilsenEisenstadtKonstanzKreuzlingenPerchtoldsdorfSlatinaŽideniceTraunMoravská TřebováNeustadt an der DonauDallgow-DöberitzAttnang-PuchheimPardubiceAnsfeldenEnnsŽilinaSokolovKarlova VesPassauČeské BudějoviceBernau bei BerlinZlínWittenbergeMikulovOlomoucKelheimKladnoMartinBurghausenZnojmoMalmöDěčínBerounNeuruppinÚstí nad LabemKroměřížFlensburgVeľká LomnicaStrausbergValašské MeziříčíLudwigslustHamburgSchwedt (Oder)LitvínovPřerovFrankfurt (Oder)KadaňMostMalchowStudénkaEisenhüttenstadtTepliceHavířovGüstrowWismarOstravaRostockWodzisław ŚląskiBohumínBützowEberswaldeItzehoeOpavaFrýdek-MístekTřinecCieszynČeský TěšínKielLübeckTrappenkampStralsund
1 Dec23456789101112
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

OstravaOstrava, 1 December: 67.9 µg/m³Ostrava, 2 December: 35.0 µg/m³Ostrava, 3 December: 15.6 µg/m³Ostrava, 4 December: 28.2 µg/m³, 2.4× its usual 12.0Ostrava, 5 December: 44.4 µg/m³, 3.7× its usual 12.1Ostrava, 6 December: 53.3 µg/m³, 4.4× its usual 12.1Ostrava, 7 December: 99.8 µg/m³, 8.2× its usual 12.1Ostrava, 8 December: 86.2 µg/m³, 7.1× its usual 12.1Ostrava, 9 December: 27.2 µg/m³, 2.2× its usual 12.1Ostrava, 10 December: 13.8 µg/m³Ostrava, 11 December: 8.0 µg/m³Ostrava, 12 December: 10.0 µg/m³OpavaOpava, 1 December: 59.0 µg/m³Opava, 2 December: 37.1 µg/m³Opava, 3 December: 15.8 µg/m³Opava, 4 December: 45.0 µg/m³, 4.6× its usual 9.7Opava, 5 December: 40.1 µg/m³, 4.0× its usual 10.0Opava, 6 December: 38.2 µg/m³, 3.7× its usual 10.3Opava, 7 December: 98.4 µg/m³, 9.4× its usual 10.5Opava, 8 December: 47.5 µg/m³, 4.5× its usual 10.5Opava, 9 December: 11.5 µg/m³Opava, 10 December: 10.3 µg/m³Opava, 11 December: 7.1 µg/m³Opava, 12 December: 6.9 µg/m³StudénkaStudénka, 1 December: 56.0 µg/m³Studénka, 2 December: 31.6 µg/m³Studénka, 3 December: 17.9 µg/m³Studénka, 4 December: 30.9 µg/m³, 2.5× its usual 12.2Studénka, 5 December: 38.7 µg/m³, 3.2× its usual 12.2Studénka, 6 December: 35.6 µg/m³, 2.9× its usual 12.2Studénka, 7 December: 93.6 µg/m³, 7.4× its usual 12.7Studénka, 8 December: 59.8 µg/m³, 4.8× its usual 12.5Studénka, 9 December: 17.6 µg/m³Studénka, 10 December: 11.8 µg/m³Studénka, 11 December: 9.5 µg/m³Studénka, 12 December: 15.6 µg/m³BerounBeroun, 1 December: 38.4 µg/m³Beroun, 2 December: 20.0 µg/m³Beroun, 3 December: 13.5 µg/m³Beroun, 4 December: 33.1 µg/m³, 2.9× its usual 11.6Beroun, 5 December: 36.8 µg/m³, 3.2× its usual 11.6Beroun, 6 December: 66.5 µg/m³, 5.4× its usual 12.4Beroun, 7 December: 25.7 µg/m³, 2.2× its usual 11.8Beroun, 8 December: 26.6 µg/m³, 2.0× its usual 13.0Beroun, 9 December: 27.4 µg/m³, 2.1× its usual 13.1Beroun, 10 December: 9.9 µg/m³Beroun, 11 December: 8.2 µg/m³Beroun, 12 December: 9.4 µg/m³Spišská Nová VesSpišská Nová Ves, 1 December: 33.0 µg/m³Spišská Nová Ves, 2 December: 35.6 µg/m³Spišská Nová Ves, 3 December: 28.3 µg/m³Spišská Nová Ves, 4 December: 46.4 µg/m³, 2.9× its usual 15.8Spišská Nová Ves, 5 December: 41.6 µg/m³, 2.6× its usual 15.8Spišská Nová Ves, 6 December: 48.0 µg/m³, 3.0× its usual 15.8Spišská Nová Ves, 7 December: 59.0 µg/m³, 3.7× its usual 16.0Spišská Nová Ves, 8 December: 35.1 µg/m³, 2.1× its usual 16.8Spišská Nová Ves, 9 December: 40.5 µg/m³, 2.1× its usual 19.7Spišská Nová Ves, 10 December: 24.7 µg/m³Spišská Nová Ves, 11 December: 17.7 µg/m³Spišská Nová Ves, 12 December: 31.1 µg/m³SmižanySmižany, 1 December: 33.0 µg/m³Smižany, 2 December: 35.6 µg/m³Smižany, 3 December: 28.3 µg/m³Smižany, 4 December: 46.4 µg/m³, 2.9× its usual 15.8Smižany, 5 December: 41.6 µg/m³, 2.6× its usual 15.8Smižany, 6 December: 48.0 µg/m³, 3.0× its usual 15.8Smižany, 7 December: 59.0 µg/m³, 3.7× its usual 16.0Smižany, 8 December: 35.1 µg/m³, 2.1× its usual 16.8Smižany, 9 December: 40.5 µg/m³, 2.1× its usual 19.7Smižany, 10 December: 24.7 µg/m³Smižany, 11 December: 17.7 µg/m³Smižany, 12 December: 31.1 µg/m³EisenhüttenstadtEisenhüttenstadt, 1 December: 21.8 µg/m³Eisenhüttenstadt, 2 December: 14.0 µg/m³Eisenhüttenstadt, 3 December: 11.8 µg/m³Eisenhüttenstadt, 4 December: 25.0 µg/m³, 3.3× its usual 7.5Eisenhüttenstadt, 5 December: 38.0 µg/m³, 5.0× its usual 7.6Eisenhüttenstadt, 6 December: 58.8 µg/m³, 7.5× its usual 7.8Eisenhüttenstadt, 7 December: 56.8 µg/m³, 7.2× its usual 7.9Eisenhüttenstadt, 8 December: 26.0 µg/m³, 3.3× its usual 7.9Eisenhüttenstadt, 9 December: 18.1 µg/m³Eisenhüttenstadt, 10 December: 10.1 µg/m³Eisenhüttenstadt, 11 December: 3.6 µg/m³Eisenhüttenstadt, 12 December: 5.4 µg/m³MartinMartin, 1 December: 33.3 µg/m³Martin, 2 December: 17.3 µg/m³Martin, 3 December: 18.0 µg/m³Martin, 4 December: 27.1 µg/m³, 2.3× its usual 11.7Martin, 5 December: 32.4 µg/m³, 2.9× its usual 11.1Martin, 6 December: 55.6 µg/m³, 4.9× its usual 11.3Martin, 7 December: 47.9 µg/m³, 4.2× its usual 11.5Martin, 8 December: 52.7 µg/m³, 4.5× its usual 11.7Martin, 9 December: 29.4 µg/m³, 2.5× its usual 11.9Martin, 10 December: 15.5 µg/m³Martin, 11 December: 17.4 µg/m³Martin, 12 December: 24.4 µg/m³Moravská TřebováMoravská Třebová, 1 December: 45.5 µg/m³Moravská Třebová, 2 December: 27.2 µg/m³Moravská Třebová, 3 December: 18.4 µg/m³Moravská Třebová, 4 December: 30.0 µg/m³, 2.4× its usual 12.6Moravská Třebová, 5 December: 28.1 µg/m³, 2.2× its usual 13.0Moravská Třebová, 6 December: 54.3 µg/m³, 4.0× its usual 13.5Moravská Třebová, 7 December: 38.5 µg/m³, 2.8× its usual 13.8Moravská Třebová, 8 December: 23.3 µg/m³Moravská Třebová, 9 December: 15.9 µg/m³Moravská Třebová, 10 December: 19.9 µg/m³Moravská Třebová, 11 December: 11.1 µg/m³Moravská Třebová, 12 December: 11.8 µg/m³EnnsEnns, 1 December: 25.7 µg/m³Enns, 2 December: 20.2 µg/m³Enns, 3 December: 20.1 µg/m³Enns, 4 December: 27.3 µg/m³, 2.6× its usual 10.6Enns, 5 December: 35.8 µg/m³, 3.4× its usual 10.6Enns, 6 December: 45.0 µg/m³, 4.2× its usual 10.6Enns, 7 December: 21.8 µg/m³Enns, 8 December: 24.0 µg/m³Enns, 9 December: 31.1 µg/m³, 2.7× its usual 11.5Enns, 10 December: 9.3 µg/m³Enns, 11 December: 14.5 µg/m³Enns, 12 December: 11.9 µg/m³AnsfeldenAnsfelden, 1 December: 25.7 µg/m³Ansfelden, 2 December: 20.2 µg/m³Ansfelden, 3 December: 20.1 µg/m³Ansfelden, 4 December: 27.3 µg/m³, 2.6× its usual 10.6Ansfelden, 5 December: 35.8 µg/m³, 3.4× its usual 10.6Ansfelden, 6 December: 45.0 µg/m³, 4.2× its usual 10.6Ansfelden, 7 December: 21.8 µg/m³Ansfelden, 8 December: 24.0 µg/m³Ansfelden, 9 December: 31.1 µg/m³, 2.7× its usual 11.5Ansfelden, 10 December: 9.3 µg/m³Ansfelden, 11 December: 14.5 µg/m³Ansfelden, 12 December: 11.9 µg/m³TraunTraun, 1 December: 24.7 µg/m³Traun, 2 December: 16.8 µg/m³Traun, 3 December: 21.7 µg/m³Traun, 4 December: 32.4 µg/m³, 2.8× its usual 11.4Traun, 5 December: 36.6 µg/m³, 3.4× its usual 10.9Traun, 6 December: 43.8 µg/m³, 4.0× its usual 10.9Traun, 7 December: 26.5 µg/m³, 2.3× its usual 11.4Traun, 8 December: 26.2 µg/m³, 2.2× its usual 12.1Traun, 9 December: 30.1 µg/m³, 2.4× its usual 12.4Traun, 10 December: 9.9 µg/m³Traun, 11 December: 14.9 µg/m³Traun, 12 December: 12.2 µg/m³Banja LukaBanja Luka, 1 December: 7.8 µg/m³Banja Luka, 2 December: 18.9 µg/m³Banja Luka, 3 December: 53.3 µg/m³Banja Luka, 4 December: 70.1 µg/m³Banja Luka, 5 December: 115.0 µg/m³, 2.3× its usual 49.9Banja Luka, 6 December: 26.1 µg/m³Banja Luka, 7 December: 70.0 µg/m³Banja Luka, 8 December: 112.0 µg/m³, 2.1× its usual 53.7Banja Luka, 9 December: no readingBanja Luka, 10 December: no readingBanja Luka, 11 December: no readingBanja Luka, 12 December: 127.0 µg/m³Český TěšínČeský Těšín, 1 December: 75.8 µg/m³Český Těšín, 2 December: 33.2 µg/m³Český Těšín, 3 December: 16.7 µg/m³Český Těšín, 4 December: 14.9 µg/m³Český Těšín, 5 December: 26.9 µg/m³, 2.7× its usual 10.1Český Těšín, 6 December: 90.3 µg/m³, 8.9× its usual 10.2Český Těšín, 7 December: 91.9 µg/m³, 8.9× its usual 10.3Český Těšín, 8 December: 103.0 µg/m³, 10× its usual 10.3Český Těšín, 9 December: 25.0 µg/m³, 2.5× its usual 10.2Český Těšín, 10 December: 14.2 µg/m³Český Těšín, 11 December: no readingČeský Těšín, 12 December: 8.4 µg/m³CieszynCieszyn, 1 December: 75.8 µg/m³Cieszyn, 2 December: 33.2 µg/m³Cieszyn, 3 December: 16.7 µg/m³Cieszyn, 4 December: 14.9 µg/m³Cieszyn, 5 December: 26.9 µg/m³, 2.7× its usual 10.1Cieszyn, 6 December: 90.3 µg/m³, 8.9× its usual 10.2Cieszyn, 7 December: 91.9 µg/m³, 8.9× its usual 10.3Cieszyn, 8 December: 103.0 µg/m³, 10× its usual 10.3Cieszyn, 9 December: 25.0 µg/m³, 2.5× its usual 10.2Cieszyn, 10 December: 14.2 µg/m³Cieszyn, 11 December: no readingCieszyn, 12 December: 8.4 µg/m³Frýdek-MístekFrýdek-Místek, 1 December: 75.4 µg/m³Frýdek-Místek, 2 December: 33.3 µg/m³Frýdek-Místek, 3 December: 14.1 µg/m³Frýdek-Místek, 4 December: 18.4 µg/m³Frýdek-Místek, 5 December: 36.9 µg/m³, 3.6× its usual 10.2Frýdek-Místek, 6 December: 76.1 µg/m³, 7.5× its usual 10.2Frýdek-Místek, 7 December: 97.0 µg/m³, 9.5× its usual 10.2Frýdek-Místek, 8 December: 65.9 µg/m³, 6.6× its usual 10.0Frýdek-Místek, 9 December: 24.0 µg/m³Frýdek-Místek, 10 December: 9.3 µg/m³Frýdek-Místek, 11 December: no readingFrýdek-Místek, 12 December: 10.1 µg/m³HavířovHavířov, 1 December: 73.5 µg/m³Havířov, 2 December: 32.3 µg/m³Havířov, 3 December: 16.5 µg/m³Havířov, 4 December: 22.6 µg/m³Havířov, 5 December: 41.8 µg/m³, 3.4× its usual 12.2Havířov, 6 December: 69.0 µg/m³, 5.6× its usual 12.3Havířov, 7 December: 96.5 µg/m³, 7.8× its usual 12.4Havířov, 8 December: 89.6 µg/m³, 7.2× its usual 12.4Havířov, 9 December: 57.2 µg/m³, 4.7× its usual 12.3Havířov, 10 December: 17.3 µg/m³Havířov, 11 December: 4.6 µg/m³Havířov, 12 December: 9.6 µg/m³BohumínBohumín, 1 December: 80.3 µg/m³Bohumín, 2 December: 30.7 µg/m³Bohumín, 3 December: 18.0 µg/m³Bohumín, 4 December: 24.7 µg/m³Bohumín, 5 December: 49.2 µg/m³, 4.7× its usual 10.4Bohumín, 6 December: 59.3 µg/m³, 5.6× its usual 10.6Bohumín, 7 December: 92.1 µg/m³, 8.5× its usual 10.8Bohumín, 8 December: 84.5 µg/m³, 7.8× its usual 10.9Bohumín, 9 December: 40.0 µg/m³, 3.8× its usual 10.4Bohumín, 10 December: 25.4 µg/m³Bohumín, 11 December: 8.9 µg/m³Bohumín, 12 December: 10.0 µg/m³Wodzisław ŚląskiWodzisław Śląski, 1 December: 80.3 µg/m³Wodzisław Śląski, 2 December: 30.7 µg/m³Wodzisław Śląski, 3 December: 18.0 µg/m³Wodzisław Śląski, 4 December: 24.7 µg/m³Wodzisław Śląski, 5 December: 49.2 µg/m³, 4.7× its usual 10.4Wodzisław Śląski, 6 December: 59.3 µg/m³, 5.6× its usual 10.6Wodzisław Śląski, 7 December: 92.1 µg/m³, 8.5× its usual 10.8Wodzisław Śląski, 8 December: 84.5 µg/m³, 7.8× its usual 10.9Wodzisław Śląski, 9 December: 40.0 µg/m³, 3.8× its usual 10.4Wodzisław Śląski, 10 December: 25.4 µg/m³Wodzisław Śląski, 11 December: 8.9 µg/m³Wodzisław Śląski, 12 December: 10.0 µg/m³TepliceTeplice, 1 December: 33.9 µg/m³Teplice, 2 December: 11.5 µg/m³Teplice, 3 December: 14.9 µg/m³Teplice, 4 December: 20.8 µg/m³Teplice, 5 December: 29.8 µg/m³, 3.3× its usual 9.0Teplice, 6 December: 53.2 µg/m³, 5.8× its usual 9.2Teplice, 7 December: 75.1 µg/m³, 7.6× its usual 9.9Teplice, 8 December: 34.3 µg/m³, 3.4× its usual 10.1Teplice, 9 December: 35.4 µg/m³, 3.5× its usual 10.1Teplice, 10 December: 19.1 µg/m³Teplice, 11 December: 15.4 µg/m³Teplice, 12 December: 11.2 µg/m³StralsundStralsund, 1 December: 13.0 µg/m³Stralsund, 2 December: 11.6 µg/m³Stralsund, 3 December: 6.7 µg/m³Stralsund, 4 December: 17.1 µg/m³Stralsund, 5 December: 28.3 µg/m³, 4.5× its usual 6.3Stralsund, 6 December: 50.4 µg/m³, 7.8× its usual 6.5Stralsund, 7 December: 74.1 µg/m³, 11× its usual 6.6Stralsund, 8 December: 37.3 µg/m³, 5.7× its usual 6.6Stralsund, 9 December: 26.4 µg/m³Stralsund, 10 December: 13.2 µg/m³Stralsund, 11 December: 5.8 µg/m³Stralsund, 12 December: 5.5 µg/m³WismarWismar, 1 December: 15.5 µg/m³Wismar, 2 December: 14.2 µg/m³Wismar, 3 December: 16.1 µg/m³Wismar, 4 December: 15.4 µg/m³Wismar, 5 December: 31.0 µg/m³, 4.1× its usual 7.6Wismar, 6 December: 60.8 µg/m³, 8.0× its usual 7.6Wismar, 7 December: 56.8 µg/m³, 7.4× its usual 7.7Wismar, 8 December: 15.8 µg/m³Wismar, 9 December: 16.6 µg/m³Wismar, 10 December: 6.1 µg/m³Wismar, 11 December: 5.9 µg/m³Wismar, 12 December: 6.6 µg/m³RostockRostock, 1 December: 11.9 µg/m³Rostock, 2 December: 12.3 µg/m³Rostock, 3 December: 9.8 µg/m³Rostock, 4 December: 17.9 µg/m³Rostock, 5 December: 33.6 µg/m³, 4.5× its usual 7.5Rostock, 6 December: 57.3 µg/m³, 8.1× its usual 7.1Rostock, 7 December: 60.7 µg/m³, 8.3× its usual 7.3Rostock, 8 December: 20.9 µg/m³Rostock, 9 December: 19.2 µg/m³Rostock, 10 December: 9.3 µg/m³Rostock, 11 December: 7.7 µg/m³Rostock, 12 December: 7.2 µg/m³LübeckLübeck, 1 December: 14.5 µg/m³Lübeck, 2 December: 12.8 µg/m³Lübeck, 3 December: 13.7 µg/m³Lübeck, 4 December: 13.4 µg/m³Lübeck, 5 December: 25.7 µg/m³, 4.8× its usual 5.4Lübeck, 6 December: 58.9 µg/m³, 11× its usual 5.5Lübeck, 7 December: 54.4 µg/m³, 9.7× its usual 5.6Lübeck, 8 December: 15.7 µg/m³Lübeck, 9 December: 13.1 µg/m³Lübeck, 10 December: 4.0 µg/m³Lübeck, 11 December: 4.4 µg/m³Lübeck, 12 December: 6.1 µg/m³BützowBützow, 1 December: 15.7 µg/m³Bützow, 2 December: 15.4 µg/m³Bützow, 3 December: 13.2 µg/m³Bützow, 4 December: 16.1 µg/m³Bützow, 5 December: 34.8 µg/m³, 5.1× its usual 6.8Bützow, 6 December: 58.4 µg/m³, 8.6× its usual 6.8Bützow, 7 December: 48.4 µg/m³, 7.1× its usual 6.8Bützow, 8 December: 16.8 µg/m³Bützow, 9 December: 17.2 µg/m³Bützow, 10 December: 6.5 µg/m³Bützow, 11 December: 5.8 µg/m³Bützow, 12 December: 7.9 µg/m³KielKiel, 1 December: 15.5 µg/m³Kiel, 2 December: 9.4 µg/m³Kiel, 3 December: 14.7 µg/m³Kiel, 4 December: 15.7 µg/m³Kiel, 5 December: 25.0 µg/m³, 4.5× its usual 5.5Kiel, 6 December: 56.2 µg/m³, 10× its usual 5.4Kiel, 7 December: 56.9 µg/m³, 11× its usual 5.4Kiel, 8 December: 16.3 µg/m³Kiel, 9 December: 16.2 µg/m³Kiel, 10 December: 5.7 µg/m³Kiel, 11 December: 7.9 µg/m³Kiel, 12 December: 6.5 µg/m³LitvínovLitvínov, 1 December: 38.9 µg/m³Litvínov, 2 December: 12.2 µg/m³Litvínov, 3 December: 14.1 µg/m³Litvínov, 4 December: 22.5 µg/m³Litvínov, 5 December: 31.0 µg/m³, 3.6× its usual 8.6Litvínov, 6 December: 55.0 µg/m³, 6.4× its usual 8.6Litvínov, 7 December: 47.2 µg/m³, 5.5× its usual 8.6Litvínov, 8 December: 32.8 µg/m³, 3.8× its usual 8.6Litvínov, 9 December: 39.3 µg/m³, 4.2× its usual 9.3Litvínov, 10 December: 12.2 µg/m³Litvínov, 11 December: 8.7 µg/m³Litvínov, 12 December: 9.7 µg/m³ŽilinaŽilina, 1 December: 37.8 µg/m³Žilina, 2 December: 17.9 µg/m³Žilina, 3 December: 12.4 µg/m³Žilina, 4 December: 24.5 µg/m³Žilina, 5 December: 27.0 µg/m³, 2.1× its usual 12.6Žilina, 6 December: 48.3 µg/m³, 3.7× its usual 12.9Žilina, 7 December: 54.8 µg/m³, 4.2× its usual 12.9Žilina, 8 December: 54.5 µg/m³, 4.2× its usual 13.1Žilina, 9 December: 36.6 µg/m³, 2.7× its usual 13.6Žilina, 10 December: 15.4 µg/m³Žilina, 11 December: 22.2 µg/m³Žilina, 12 December: 29.3 µg/m³GüstrowGüstrow, 1 December: 15.3 µg/m³Güstrow, 2 December: 14.4 µg/m³Güstrow, 3 December: 12.7 µg/m³Güstrow, 4 December: 15.4 µg/m³Güstrow, 5 December: 33.2 µg/m³, 4.9× its usual 6.8Güstrow, 6 December: 54.3 µg/m³, 8.0× its usual 6.8Güstrow, 7 December: 40.6 µg/m³, 6.0× its usual 6.8Güstrow, 8 December: 16.3 µg/m³Güstrow, 9 December: 16.0 µg/m³Güstrow, 10 December: 6.2 µg/m³Güstrow, 11 December: 5.4 µg/m³Güstrow, 12 December: 8.3 µg/m³MostMost, 1 December: 38.5 µg/m³Most, 2 December: 14.6 µg/m³Most, 3 December: 13.7 µg/m³Most, 4 December: 24.7 µg/m³Most, 5 December: 32.0 µg/m³, 4.3× its usual 7.4Most, 6 December: 54.1 µg/m³, 7.3× its usual 7.4Most, 7 December: 35.5 µg/m³, 4.8× its usual 7.4Most, 8 December: 29.4 µg/m³, 3.9× its usual 7.5Most, 9 December: 41.4 µg/m³, 5.4× its usual 7.6Most, 10 December: 34.0 µg/m³Most, 11 December: no readingMost, 12 December: no readingÚstí nad LabemÚstí nad Labem, 1 December: 30.5 µg/m³Ústí nad Labem, 2 December: 13.9 µg/m³Ústí nad Labem, 3 December: 17.1 µg/m³Ústí nad Labem, 4 December: 24.3 µg/m³Ústí nad Labem, 5 December: 30.9 µg/m³, 3.3× its usual 9.5Ústí nad Labem, 6 December: 46.5 µg/m³, 4.9× its usual 9.5Ústí nad Labem, 7 December: 54.0 µg/m³, 5.6× its usual 9.7Ústí nad Labem, 8 December: 29.2 µg/m³, 2.9× its usual 10.2Ústí nad Labem, 9 December: 25.1 µg/m³, 2.5× its usual 10.2Ústí nad Labem, 10 December: 14.3 µg/m³Ústí nad Labem, 11 December: 12.2 µg/m³Ústí nad Labem, 12 December: 12.5 µg/m³Frankfurt (Oder)Frankfurt (Oder), 1 December: 26.7 µg/m³Frankfurt (Oder), 2 December: 13.3 µg/m³Frankfurt (Oder), 3 December: 13.1 µg/m³Frankfurt (Oder), 4 December: 21.0 µg/m³Frankfurt (Oder), 5 December: 34.8 µg/m³, 4.4× its usual 8.0Frankfurt (Oder), 6 December: 53.6 µg/m³, 6.8× its usual 7.9Frankfurt (Oder), 7 December: 53.0 µg/m³, 6.7× its usual 7.9Frankfurt (Oder), 8 December: 25.5 µg/m³, 3.2× its usual 7.9Frankfurt (Oder), 9 December: 18.1 µg/m³Frankfurt (Oder), 10 December: 10.7 µg/m³Frankfurt (Oder), 11 December: 3.9 µg/m³Frankfurt (Oder), 12 December: 5.7 µg/m³ZnojmoZnojmo, 1 December: 33.2 µg/m³Znojmo, 2 December: 18.8 µg/m³Znojmo, 3 December: 14.3 µg/m³Znojmo, 4 December: 23.3 µg/m³Znojmo, 5 December: 29.3 µg/m³, 2.9× its usual 10.1Znojmo, 6 December: 51.4 µg/m³, 5.0× its usual 10.3Znojmo, 7 December: 17.0 µg/m³Znojmo, 8 December: 25.7 µg/m³, 2.3× its usual 11.3Znojmo, 9 December: 21.5 µg/m³Znojmo, 10 December: 18.4 µg/m³Znojmo, 11 December: 11.9 µg/m³Znojmo, 12 December: 10.7 µg/m³Schwedt (Oder)Schwedt (Oder), 1 December: 13.3 µg/m³Schwedt (Oder), 2 December: 10.5 µg/m³Schwedt (Oder), 3 December: 9.1 µg/m³Schwedt (Oder), 4 December: 20.4 µg/m³Schwedt (Oder), 5 December: 33.9 µg/m³, 4.5× its usual 7.5Schwedt (Oder), 6 December: 47.3 µg/m³, 6.3× its usual 7.5Schwedt (Oder), 7 December: 46.8 µg/m³, 6.3× its usual 7.4Schwedt (Oder), 8 December: 31.7 µg/m³, 4.3× its usual 7.3Schwedt (Oder), 9 December: 23.1 µg/m³Schwedt (Oder), 10 December: 9.8 µg/m³Schwedt (Oder), 11 December: 4.0 µg/m³Schwedt (Oder), 12 December: 6.5 µg/m³EberswaldeEberswalde, 1 December: 12.0 µg/m³Eberswalde, 2 December: 12.7 µg/m³Eberswalde, 3 December: 10.7 µg/m³Eberswalde, 4 December: 19.1 µg/m³Eberswalde, 5 December: 31.3 µg/m³, 6.1× its usual 5.1Eberswalde, 6 December: 46.3 µg/m³, 8.7× its usual 5.3Eberswalde, 7 December: 35.4 µg/m³, 6.7× its usual 5.3Eberswalde, 8 December: 20.6 µg/m³Eberswalde, 9 December: 19.4 µg/m³Eberswalde, 10 December: 8.8 µg/m³Eberswalde, 11 December: 4.3 µg/m³Eberswalde, 12 December: 5.8 µg/m³EisenstadtEisenstadt, 1 December: 19.1 µg/m³Eisenstadt, 2 December: 14.0 µg/m³Eisenstadt, 3 December: 14.6 µg/m³Eisenstadt, 4 December: 19.8 µg/m³Eisenstadt, 5 December: 32.2 µg/m³, 2.8× its usual 11.6Eisenstadt, 6 December: 45.3 µg/m³, 3.9× its usual 11.6Eisenstadt, 7 December: 16.0 µg/m³Eisenstadt, 8 December: 25.1 µg/m³, 2.1× its usual 12.2Eisenstadt, 9 December: 25.3 µg/m³Eisenstadt, 10 December: 17.8 µg/m³Eisenstadt, 11 December: 28.7 µg/m³Eisenstadt, 12 December: 17.3 µg/m³MalchowMalchow, 1 December: 11.4 µg/m³Malchow, 2 December: 10.7 µg/m³Malchow, 3 December: 11.9 µg/m³Malchow, 4 December: 15.2 µg/m³Malchow, 5 December: 29.3 µg/m³, 5.0× its usual 5.9Malchow, 6 December: 43.9 µg/m³, 7.4× its usual 5.9Malchow, 7 December: 20.5 µg/m³Malchow, 8 December: 14.5 µg/m³Malchow, 9 December: 14.4 µg/m³Malchow, 10 December: 6.4 µg/m³Malchow, 11 December: 5.1 µg/m³Malchow, 12 December: 9.7 µg/m³RužomberokRužomberok, 1 December: 33.6 µg/m³Ružomberok, 2 December: 17.1 µg/m³Ružomberok, 3 December: 15.9 µg/m³Ružomberok, 4 December: 25.4 µg/m³Ružomberok, 5 December: 38.6 µg/m³, 2.5× its usual 15.4Ružomberok, 6 December: 43.1 µg/m³, 2.8× its usual 15.6Ružomberok, 7 December: 40.3 µg/m³, 2.6× its usual 15.6Ružomberok, 8 December: 27.6 µg/m³Ružomberok, 9 December: 43.6 µg/m³, 2.8× its usual 15.7Ružomberok, 10 December: 21.5 µg/m³Ružomberok, 11 December: 29.4 µg/m³Ružomberok, 12 December: 20.2 µg/m³StrausbergStrausberg, 1 December: 12.5 µg/m³Strausberg, 2 December: 10.7 µg/m³Strausberg, 3 December: 12.2 µg/m³Strausberg, 4 December: 18.3 µg/m³Strausberg, 5 December: 32.5 µg/m³, 4.5× its usual 7.2Strausberg, 6 December: 42.5 µg/m³, 6.1× its usual 7.0Strausberg, 7 December: 17.5 µg/m³Strausberg, 8 December: 20.1 µg/m³Strausberg, 9 December: 16.1 µg/m³Strausberg, 10 December: 6.6 µg/m³Strausberg, 11 December: 3.4 µg/m³Strausberg, 12 December: 6.1 µg/m³LudwigslustLudwigslust, 1 December: 18.4 µg/m³Ludwigslust, 2 December: 17.0 µg/m³Ludwigslust, 3 December: 14.8 µg/m³Ludwigslust, 4 December: 15.9 µg/m³Ludwigslust, 5 December: 28.7 µg/m³, 4.2× its usual 6.8Ludwigslust, 6 December: 42.3 µg/m³, 6.2× its usual 6.8Ludwigslust, 7 December: 24.0 µg/m³Ludwigslust, 8 December: 18.9 µg/m³Ludwigslust, 9 December: 14.8 µg/m³Ludwigslust, 10 December: 6.1 µg/m³Ludwigslust, 11 December: 5.4 µg/m³Ludwigslust, 12 December: 8.9 µg/m³ŽideniceŽidenice, 1 December: 31.1 µg/m³Židenice, 2 December: 17.5 µg/m³Židenice, 3 December: 12.8 µg/m³Židenice, 4 December: 22.9 µg/m³Židenice, 5 December: 25.5 µg/m³, 2.5× its usual 10.3Židenice, 6 December: 42.0 µg/m³, 4.0× its usual 10.4Židenice, 7 December: 23.2 µg/m³Židenice, 8 December: 25.7 µg/m³, 2.5× its usual 10.4Židenice, 9 December: 20.9 µg/m³Židenice, 10 December: 17.9 µg/m³Židenice, 11 December: 18.7 µg/m³Židenice, 12 December: 13.7 µg/m³SlatinaSlatina, 1 December: 31.1 µg/m³Slatina, 2 December: 17.5 µg/m³Slatina, 3 December: 12.8 µg/m³Slatina, 4 December: 22.9 µg/m³Slatina, 5 December: 25.5 µg/m³, 2.5× its usual 10.3Slatina, 6 December: 42.0 µg/m³, 4.0× its usual 10.4Slatina, 7 December: 23.2 µg/m³Slatina, 8 December: 25.7 µg/m³, 2.5× its usual 10.4Slatina, 9 December: 20.9 µg/m³Slatina, 10 December: 17.9 µg/m³Slatina, 11 December: 18.7 µg/m³Slatina, 12 December: 13.7 µg/m³TřinecTřinec, 1 December: 66.2 µg/m³Třinec, 2 December: 32.2 µg/m³Třinec, 3 December: 17.4 µg/m³Třinec, 4 December: 15.1 µg/m³Třinec, 5 December: 12.3 µg/m³Třinec, 6 December: 58.9 µg/m³, 5.4× its usual 11.0Třinec, 7 December: 104.0 µg/m³, 9.5× its usual 11.0Třinec, 8 December: 44.4 µg/m³, 4.1× its usual 10.9Třinec, 9 December: 12.6 µg/m³Třinec, 10 December: 12.1 µg/m³Třinec, 11 December: 8.0 µg/m³Třinec, 12 December: 8.0 µg/m³PřerovPřerov, 1 December: 43.2 µg/m³Přerov, 2 December: 22.8 µg/m³Přerov, 3 December: 15.0 µg/m³Přerov, 4 December: 17.0 µg/m³Přerov, 5 December: 24.2 µg/m³Přerov, 6 December: 49.9 µg/m³, 3.9× its usual 12.8Přerov, 7 December: 86.8 µg/m³, 6.7× its usual 12.9Přerov, 8 December: 45.9 µg/m³, 3.5× its usual 13.0Přerov, 9 December: 21.1 µg/m³Přerov, 10 December: 15.9 µg/m³Přerov, 11 December: 12.2 µg/m³Přerov, 12 December: 10.6 µg/m³Valašské MeziříčíValašské Meziříčí, 1 December: 58.0 µg/m³Valašské Meziříčí, 2 December: 29.0 µg/m³Valašské Meziříčí, 3 December: 20.4 µg/m³Valašské Meziříčí, 4 December: 14.9 µg/m³Valašské Meziříčí, 5 December: 20.2 µg/m³Valašské Meziříčí, 6 December: 50.8 µg/m³, 4.0× its usual 12.6Valašské Meziříčí, 7 December: 75.8 µg/m³, 6.1× its usual 12.5Valašské Meziříčí, 8 December: 38.5 µg/m³, 3.1× its usual 12.5Valašské Meziříčí, 9 December: 14.8 µg/m³Valašské Meziříčí, 10 December: 12.6 µg/m³Valašské Meziříčí, 11 December: 7.4 µg/m³Valašské Meziříčí, 12 December: 13.0 µg/m³DejDej, 1 December: 32.3 µg/m³Dej, 2 December: 37.7 µg/m³Dej, 3 December: 15.5 µg/m³Dej, 4 December: 26.1 µg/m³Dej, 5 December: 38.8 µg/m³Dej, 6 December: 69.1 µg/m³, 2.2× its usual 31.4Dej, 7 December: 50.5 µg/m³Dej, 8 December: 16.5 µg/m³Dej, 9 December: 21.0 µg/m³Dej, 10 December: 24.6 µg/m³Dej, 11 December: 34.3 µg/m³Dej, 12 December: 43.9 µg/m³DěčínDěčín, 1 December: 35.0 µg/m³Děčín, 2 December: 16.5 µg/m³Děčín, 3 December: 21.8 µg/m³Děčín, 4 December: 25.0 µg/m³Děčín, 5 December: 24.7 µg/m³Děčín, 6 December: 41.3 µg/m³, 3.2× its usual 12.9Děčín, 7 December: 68.7 µg/m³, 5.3× its usual 13.0Děčín, 8 December: 29.4 µg/m³, 2.1× its usual 13.7Děčín, 9 December: 27.6 µg/m³, 2.0× its usual 13.7Děčín, 10 December: 20.4 µg/m³Děčín, 11 December: 24.4 µg/m³Děčín, 12 December: 15.9 µg/m³OlomoucOlomouc, 1 December: 36.8 µg/m³Olomouc, 2 December: 17.5 µg/m³Olomouc, 3 December: 15.5 µg/m³Olomouc, 4 December: 19.0 µg/m³Olomouc, 5 December: 26.7 µg/m³Olomouc, 6 December: 54.7 µg/m³, 4.0× its usual 13.6Olomouc, 7 December: 64.9 µg/m³, 4.7× its usual 13.7Olomouc, 8 December: 49.4 µg/m³, 3.5× its usual 14.0Olomouc, 9 December: 23.0 µg/m³Olomouc, 10 December: 17.0 µg/m³Olomouc, 11 December: 16.2 µg/m³Olomouc, 12 December: 11.7 µg/m³TrappenkampTrappenkamp, 1 December: 10.7 µg/m³Trappenkamp, 2 December: 6.3 µg/m³Trappenkamp, 3 December: 10.7 µg/m³Trappenkamp, 4 December: 12.0 µg/m³Trappenkamp, 5 December: 20.8 µg/m³Trappenkamp, 6 December: 45.3 µg/m³, 9.1× its usual 4.6Trappenkamp, 7 December: 55.2 µg/m³, 11× its usual 4.8Trappenkamp, 8 December: 13.5 µg/m³Trappenkamp, 9 December: 11.1 µg/m³Trappenkamp, 10 December: 2.9 µg/m³Trappenkamp, 11 December: 4.1 µg/m³Trappenkamp, 12 December: 4.8 µg/m³KadaňKadaň, 1 December: 36.8 µg/m³Kadaň, 2 December: 15.9 µg/m³Kadaň, 3 December: 10.0 µg/m³Kadaň, 4 December: 20.3 µg/m³Kadaň, 5 December: no readingKadaň, 6 December: 53.4 µg/m³, 7.3× its usual 7.3Kadaň, 7 December: 20.9 µg/m³Kadaň, 8 December: 22.9 µg/m³Kadaň, 9 December: 36.1 µg/m³, 4.9× its usual 7.4Kadaň, 10 December: 6.1 µg/m³Kadaň, 11 December: no readingKadaň, 12 December: 5.8 µg/m³KroměřížKroměříž, 1 December: 41.2 µg/m³Kroměříž, 2 December: 21.0 µg/m³Kroměříž, 3 December: 10.5 µg/m³Kroměříž, 4 December: 14.2 µg/m³Kroměříž, 5 December: 20.2 µg/m³Kroměříž, 6 December: 39.0 µg/m³, 4.4× its usual 8.8Kroměříž, 7 December: 52.9 µg/m³, 5.7× its usual 9.3Kroměříž, 8 December: 24.2 µg/m³Kroměříž, 9 December: 15.5 µg/m³Kroměříž, 10 December: 12.9 µg/m³Kroměříž, 11 December: 6.8 µg/m³Kroměříž, 12 December: 5.6 µg/m³ZlínZlín, 1 December: 49.5 µg/m³Zlín, 2 December: 21.4 µg/m³Zlín, 3 December: 14.7 µg/m³Zlín, 4 December: 15.2 µg/m³Zlín, 5 December: 18.0 µg/m³Zlín, 6 December: 45.1 µg/m³, 4.1× its usual 11.0Zlín, 7 December: 50.2 µg/m³, 4.5× its usual 11.1Zlín, 8 December: 25.9 µg/m³, 2.3× its usual 11.2Zlín, 9 December: 15.0 µg/m³Zlín, 10 December: 12.3 µg/m³Zlín, 11 December: 8.7 µg/m³Zlín, 12 December: 11.6 µg/m³PrešovPrešov, 1 December: 24.0 µg/m³Prešov, 2 December: 10.3 µg/m³Prešov, 3 December: 17.3 µg/m³Prešov, 4 December: 25.9 µg/m³Prešov, 5 December: 27.7 µg/m³Prešov, 6 December: 49.7 µg/m³, 3.2× its usual 15.7Prešov, 7 December: 34.5 µg/m³, 2.2× its usual 15.5Prešov, 8 December: 30.9 µg/m³Prešov, 9 December: 26.7 µg/m³Prešov, 10 December: 18.1 µg/m³Prešov, 11 December: 15.8 µg/m³Prešov, 12 December: 19.5 µg/m³ItzehoeItzehoe, 1 December: 11.7 µg/m³Itzehoe, 2 December: 9.7 µg/m³Itzehoe, 3 December: 13.9 µg/m³Itzehoe, 4 December: 12.6 µg/m³Itzehoe, 5 December: 22.6 µg/m³Itzehoe, 6 December: 49.5 µg/m³, 8.7× its usual 5.7Itzehoe, 7 December: 43.7 µg/m³, 7.4× its usual 5.9Itzehoe, 8 December: 16.6 µg/m³Itzehoe, 9 December: 11.0 µg/m³Itzehoe, 10 December: 3.9 µg/m³Itzehoe, 11 December: 5.0 µg/m³Itzehoe, 12 December: 7.9 µg/m³GrazGraz, 1 December: 26.7 µg/m³Graz, 2 December: 11.9 µg/m³Graz, 3 December: 13.5 µg/m³Graz, 4 December: 24.1 µg/m³Graz, 5 December: 31.6 µg/m³Graz, 6 December: 47.2 µg/m³, 2.4× its usual 19.4Graz, 7 December: 21.7 µg/m³Graz, 8 December: 33.0 µg/m³Graz, 9 December: 35.4 µg/m³Graz, 10 December: 38.1 µg/m³Graz, 11 December: 42.9 µg/m³Graz, 12 December: 45.9 µg/m³HamburgHamburg, 1 December: 16.4 µg/m³Hamburg, 2 December: 12.4 µg/m³Hamburg, 3 December: 16.4 µg/m³Hamburg, 4 December: 15.1 µg/m³Hamburg, 5 December: 21.1 µg/m³Hamburg, 6 December: 45.1 µg/m³, 6.3× its usual 7.2Hamburg, 7 December: 29.2 µg/m³, 3.9× its usual 7.4Hamburg, 8 December: 19.4 µg/m³Hamburg, 9 December: 12.8 µg/m³Hamburg, 10 December: 5.5 µg/m³Hamburg, 11 December: 6.8 µg/m³Hamburg, 12 December: 10.5 µg/m³HumennéHumenné, 1 December: 17.5 µg/m³Humenné, 2 December: 10.8 µg/m³Humenné, 3 December: 17.7 µg/m³Humenné, 4 December: 23.0 µg/m³Humenné, 5 December: 26.2 µg/m³Humenné, 6 December: 36.5 µg/m³, 2.3× its usual 16.0Humenné, 7 December: 44.8 µg/m³, 2.8× its usual 16.0Humenné, 8 December: 32.4 µg/m³, 2.0× its usual 16.1Humenné, 9 December: 24.2 µg/m³Humenné, 10 December: 25.3 µg/m³Humenné, 11 December: 20.9 µg/m³Humenné, 12 December: 22.6 µg/m³Hradec KrálovéHradec Králové, 1 December: 36.6 µg/m³Hradec Králové, 2 December: 18.0 µg/m³Hradec Králové, 3 December: 11.4 µg/m³Hradec Králové, 4 December: 18.7 µg/m³Hradec Králové, 5 December: 21.3 µg/m³Hradec Králové, 6 December: 37.7 µg/m³, 3.4× its usual 11.0Hradec Králové, 7 December: 43.3 µg/m³, 3.8× its usual 11.3Hradec Králové, 8 December: 22.8 µg/m³Hradec Králové, 9 December: 15.3 µg/m³Hradec Králové, 10 December: 10.4 µg/m³Hradec Králové, 11 December: 4.6 µg/m³Hradec Králové, 12 December: 5.1 µg/m³PartizánskePartizánske, 1 December: 23.8 µg/m³Partizánske, 2 December: 15.3 µg/m³Partizánske, 3 December: 9.2 µg/m³Partizánske, 4 December: 16.4 µg/m³Partizánske, 5 December: 15.3 µg/m³Partizánske, 6 December: 33.2 µg/m³, 2.5× its usual 13.5Partizánske, 7 December: 42.0 µg/m³, 3.1× its usual 13.5Partizánske, 8 December: 25.8 µg/m³Partizánske, 9 December: 22.3 µg/m³Partizánske, 10 December: 24.8 µg/m³Partizánske, 11 December: 32.4 µg/m³Partizánske, 12 December: 36.3 µg/m³SarajevoSarajevo, 1 December: 18.4 µg/m³Sarajevo, 2 December: 24.9 µg/m³Sarajevo, 3 December: 23.2 µg/m³Sarajevo, 4 December: 52.5 µg/m³Sarajevo, 5 December: 52.0 µg/m³Sarajevo, 6 December: 44.3 µg/m³Sarajevo, 7 December: no readingSarajevo, 8 December: 46.6 µg/m³Sarajevo, 9 December: 108.0 µg/m³, 2.1× its usual 52.3Sarajevo, 10 December: 162.0 µg/m³Sarajevo, 11 December: 161.0 µg/m³Sarajevo, 12 December: 144.0 µg/m³1 Dec357911
The 60 cities with the highest readings of 134, 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
StralsundMecklenburg-Vorpommern, Germany4 74.17 December6.611×
TrappenkampSchleswig-Holstein, Germany2 55.27 December4.811×
LübeckSchleswig-Holstein, Germany3 58.96 December5.511×
KielSchleswig-Holstein, Germany3 56.97 December5.411×
Český TěšínMoravian-Silesian Region, Czechia5 103.08 December10.310×
CieszynSilesia, Poland5 103.08 December10.310×
TřinecMoravian-Silesian Region, Czechia3 104.07 December11.09.5×
Frýdek-MístekMoravian-Silesian Region, Czechia4 97.07 December10.29.5×
OpavaMoravian-Silesian Region, Czechia5 98.47 December10.59.4×
ItzehoeSchleswig-Holstein, Germany2 49.56 December5.78.7×
EberswaldeBrandenburg, Germany3 46.36 December5.38.7×
BützowMecklenburg-Vorpommern, Germany3 58.46 December6.88.6×
BohumínMoravian-Silesian Region, Czechia5 92.17 December10.88.5×
Wodzisław ŚląskiSilesia, Poland5 92.17 December10.88.5×
RostockMecklenburg-Vorpommern, Germany3 60.77 December7.38.3×
OstravaMoravian-Silesian Region, Czechia6 99.87 December12.18.2×
WismarMecklenburg-Vorpommern, Germany3 60.86 December7.68.0×
GüstrowMecklenburg-Vorpommern, Germany3 54.36 December6.88.0×
HavířovMoravian-Silesian Region, Czechia5 96.57 December12.47.8×
TepliceÚstí nad Labem Region, Czechia5 75.17 December9.97.6×
EisenhüttenstadtBrandenburg, Germany5 58.86 December7.87.5×
StudénkaMoravian-Silesian Region, Czechia5 93.67 December12.77.4×
MalchowMecklenburg-Vorpommern, Germany2 43.96 December5.97.4×
MostÚstí nad Labem Region, Czechia5 54.16 December7.47.3×
KadaňÚstí nad Labem Region, Czechia2 53.46 December7.37.3×
Frankfurt (Oder)Brandenburg, Germany4 53.66 December7.96.8×
PřerovOlomouc Region, Czechia3 86.87 December12.96.7×
LitvínovÚstí nad Labem Region, Czechia5 55.06 December8.66.4×
Schwedt (Oder)Brandenburg, Germany4 47.36 December7.56.3×
HamburgHamburg, Germany2 45.16 December7.26.3×
LudwigslustMecklenburg-Vorpommern, Germany2 42.36 December6.86.2×
Valašské MeziříčíZlín, Czechia3 75.87 December12.56.1×
StrausbergBrandenburg, Germany2 42.56 December7.06.1×
Veľká LomnicaPrešov Region, Slovakia1 31.87 December5.36.0×
FlensburgSchleswig-Holstein, Germany2 37.37 December6.45.8×
KroměřížZlín, Czechia2 52.97 December9.35.7×
Ústí nad LabemÚstí nad Labem Region, Czechia5 54.07 December9.75.6×
NeuruppinBrandenburg, Germany2 37.06 December6.75.5×
BerounCentral Bohemia, Czechia6 66.56 December12.45.4×
DěčínÚstí nad Labem Region, Czechia4 68.77 December13.05.3×
MalmöSkåne, Sweden2 25.87 December4.85.2×
ZnojmoSouth Moravian, Czechia3 51.46 December10.35.0×
BurghausenBavaria, Germany1 34.75 December6.95.0×
MartinŽilina Region, Slovakia6 55.66 December11.34.9×
KladnoCentral Bohemia, Czechia3 37.56 December7.74.9×
KelheimBavaria, Germany1 30.65 December6.44.8×
OlomoucOlomouc Region, Czechia3 64.97 December13.74.7×
MikulovSouth Moravian, Czechia1 35.96 December7.64.7×
WittenbergeBrandenburg, Germany1 27.16 December5.94.6×
ZlínZlín, Czechia3 50.27 December11.14.5×
Bernau bei BerlinBrandenburg, Germany2 39.86 December8.84.5×
České BudějoviceSouth Bohemian Region, Czechia3 39.56 December8.74.5×
PassauBavaria, Germany3 35.86 December8.24.4×
Karlova VesBratislava Region, Slovakia1 28.86 December6.74.3×
SokolovCarlsbad Region, Czechia2 28.05 December6.54.3×
ŽilinaŽilina Region, Slovakia5 54.87 December12.94.2×
EnnsUpper Austria, Austria4 45.06 December10.64.2×
AnsfeldenUpper Austria, Austria4 45.06 December10.64.2×
PardubicePardubice Region, Czechia2 40.96 December9.84.2×
Attnang-PuchheimUpper Austria, Austria2 36.55 December9.04.1×
Dallgow-DöberitzBrandenburg, Germany1 26.45 December6.44.1×
Neustadt an der DonauBavaria, Germany1 25.25 December6.14.1×
Moravská TřebováPardubice Region, Czechia4 54.36 December13.54.0×
TraunUpper Austria, Austria6 43.86 December10.94.0×
ŽideniceSouth Moravian, Czechia3 42.06 December10.44.0×
SlatinaSouth Moravian, Czechia3 42.06 December10.44.0×
PerchtoldsdorfLower Austria, Austria2 34.06 December8.64.0×
KreuzlingenThurgau, Switzerland1 25.04 December6.34.0×
KonstanzBaden-Wurttemberg, Germany1 25.04 December6.34.0×
EisenstadtBurgenland, Austria3 45.36 December11.63.9×
PilsenPlzeň Region, Czechia2 32.95 December8.53.9×
SchöneicheBrandenburg, Germany2 30.56 December7.93.9×
NeuenhagenBrandenburg, Germany2 30.56 December7.93.9×
Hradec KrálovéHradec Králové Region, Czechia2 43.37 December11.33.8×
Mladá BoleslavCentral Bohemia, Czechia2 41.06 December10.73.8×
LinzUpper Austria, Austria4 40.26 December10.53.8×
LiberecLiberec Region, Czechia1 33.46 December8.93.8×
KleinmachnowBrandenburg, Germany2 26.45 December7.03.8×
Spišská Nová VesKošice Region, Slovakia6 59.07 December16.03.7×
SmižanyKošice Region, Slovakia6 59.07 December16.03.7×
TullnLower Austria, Austria2 37.56 December10.23.7×
PraguePrague, Czechia2 33.96 December9.23.7×
SteyrUpper Austria, Austria2 31.06 December8.33.7×
AugsburgBavaria, Germany1 25.44 December6.93.7×
BrnoSouth Moravian, Czechia1 38.26 December10.73.6×
Sankt ValentinLower Austria, Austria3 37.16 December10.43.6×
MödlingLower Austria, Austria2 34.66 December9.73.6×
WelsUpper Austria, Austria4 33.85 December9.33.6×
LubnjowBrandenburg, Germany1 25.05 December6.93.6×
KlosterneuburgLower Austria, Austria2 37.06 December10.73.5×
Groß-EnzersdorfLower Austria, Austria1 30.86 December9.13.4×
Bad VöslauLower Austria, Austria2 29.26 December8.53.4×
Neu-UlmBavaria, Germany1 26.24 December7.73.4×
ViennaVienna, Austria1 30.26 December9.13.3×
Trostberg an der AlzBavaria, Germany1 26.54 December8.03.3×
TraunreutBavaria, Germany1 26.54 December8.03.3×
PrešovPrešov Region, Slovakia2 49.76 December15.73.2×
Sankt PöltenLower Austria, Austria2 30.86 December9.63.2×
TeltowBrandenburg, Germany2 30.05 December9.33.2×
UlmBaden-Wurttemberg, Germany1 27.54 December8.53.2×
PartizánskeTrenčín Region, Slovakia2 42.07 December13.53.1×
PrievidzaTrenčín Region, Slovakia1 40.87 December13.13.1×
TrenčínTrenčín Region, Slovakia3 35.46 December11.63.1×
AmstettenLower Austria, Austria2 31.86 December10.43.1×
WeizStyria, Austria2 31.46 December10.43.0×
NauenBrandenburg, Germany1 25.15 December8.43.0×
DunaújvárosFejér, Hungary2 36.09 December12.62.9×
BerlinState of Berlin, Germany2 32.76 December11.42.9×
KiefersfeldenBavaria, Germany1 31.56 December10.82.9×
TübingenBaden-Wurttemberg, Germany1 26.24 December9.02.9×
HumennéPrešov Region, Slovakia3 44.87 December16.02.8×
RužomberokŽilina Region, Slovakia4 43.69 December15.72.8×
Banská BystricaBanská Bystrica Region, Slovakia2 33.07 December11.92.8×
TrnavaTrnava Region, Slovakia1 30.06 December10.92.8×
LeibnitzStyria, Austria3 41.66 December15.72.6×
HandlováTrenčín Region, Slovakia1 28.07 December10.62.6×
SenicaTrnava Region, Slovakia2 26.56 December10.22.6×
Hainburg an der DonauLower Austria, Austria1 28.86 December11.42.5×
GrazStyria, Austria1 47.26 December19.42.4×
MahlowBrandenburg, Germany2 30.36 December12.72.4×
Žiar nad HronomBanská Bystrica Region, Slovakia1 27.38 December11.32.4×
KolárovoNitra Region, Slovakia2 25.46 December10.52.4×
Banja LukaSrpska, Bosnia and Herzegovina2 115.05 December49.92.3×
WolfsbergCarinthia, Austria1 33.36 December14.62.3×
WormsRheinland-Pfalz, Germany1 27.24 December11.72.3×
DejCluj County, Romania1 69.16 December31.42.2×
Cluj-NapocaCluj County, Romania1 38.06 December17.52.2×
ZvolenBanská Bystrica Region, Slovakia2 32.77 December15.12.2×
Klagenfurt am WörtherseeCarinthia, Austria1 28.76 December13.22.2×
SarajevoFederation of B&H, Bosnia and Herzegovina1 108.09 December52.32.1×
Vranov nad TopľouPrešov Region, Slovakia1 33.47 December15.92.1×
NitraNitra Region, Slovakia1 27.56 December13.32.1×
KošiceKošice Region, Slovakia1 35.69 December17.42.0×
LiberpolisCounty of Osijek-Baranja, Croatia1 30.79 December15.32.0×

Daily means in µg/m³, over the days each city counted in this episode. Highest: its highest of those days. Usual: the city's median for the time of year of that day (its days within 21 days of the date, every year, leaving out the week around it). Above usual: its highest day against that, with a usual under 5 µg/m³ taken as 5.

Against other episodes in Germany and Czechia

Number 14 of 39 episodes in Germany and Czechia since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 39.

Use this page

SmogRank, Europe, December 2023: 134 cities with PM2.5 at twice their usual or more, 4 to 9 December 2023, smogrank.com/episodes/2023-12-europe (accessed 5 October 2026).

Download top 10 (PNG)

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. Fire detections from NASA FIRMS; smoke maps from NOAA HMS.