SmogRank / Episodes / Poland

Eastern Europe, January 2026

For 2 days, from 9 to 10 January 2026, 70 cities in Poland, Hungary, Austria and 10 more countries had PM2.5 at least twice their usual for the time of year. The worst reading was Bijelo Polje, Bijelo Polje, Montenegro: 210.0 µg/m³ on 10 January, about 3.6× its usual 58.1.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached70in 13 countries
Days29 to 10 January 2026
Worst day9 January57 cities counted
Furthest above usual7.1×Kłodzko

Day by day

9 January 57 cities at twice their usual or more
GrazWolfsbergBanja LukaBihaćRacibórzKlagenfurt am WörtherseeTravnikKranjLinzTraunKatowiceŘíčanyKrakówKoperStodůlkyPassauTimişoaraSalzburgDebrecenSaalfelden am Steinernen MeerBurghausenŁaskTraunreutNikšićKielceŁódźZgierzLandshutStarachowiceKutnoBarSchwandorf in BayernKelheimRadomWłocławekWeidenŻyrardówZalăuMunichPłockNiskoMarktredwitzToruńBydgoszczStarnbergPruszkówPrzemyślIngolstadtJarosławAltenburgGreizKonstancin-JeziornaWarsawOtwockWawerLegionowoBaia MareGeraLuckenwaldeCluj-NapocaNeuenhagenZeitzTârgu JiuAugsburgSchwedt (Oder)CiechanówKleinmachnowBernau bei BerlinNurembergGostivarDejBitterfeld-WolfenWeißenfelsLublinPotsdamSighetu MarmaţieiMerseburgSkopjeFalkenseeJenaHalle (Saale)OranienburgDessauKumanovoIlindenKościerzynaZamośćBambergNauenKöthenBrandenburg an der HavelKempten (Allgäu)AnsbachWeimarKołobrzegOhridBernburgVelesCraiovaElblągGdańskNeuruppinOlsztynErfurtTârgu MureşPrilepAalenNeu-UlmBurg bei MagdeburgUlmSuhlKochaniMagdeburgNeubrandenburgBitolaKavadarciBiberach an der RißSofiaStendalSondershausenLindauMeiningenNordhausenHalberstadtWürzburgSchwäbisch HallFriedrichshafenMühlhausenEisenachLauda-KönigshofenStrumicaWernigerodeWittenbergePiteştiKonstanzReutlingenFilderstadtStralsundDuderstadtStuttgartLudwigsburgGoslarHeilbronnGüstrowFuldaHansestadt SalzwedelEłkWolfsburgBiałystokKozániCodleaTübingenBraunschweigSalzgitterWitzenhausenGöttingenHerrenbergRostockWinterthurAschaffenburgMichelstadtGroßostheimSchwerinAugustówThessaloníkiPforzheimZürichKasselPylaíaHildesheimUslarWismarWieslochVillingen-SchwenningenHanau am MainHeidelbergSuwałkiSevlievoSuceavaBensheimDarmstadtBad WildungenKarlsruheFrankfurt am MainPiatra NeamţEggenstein-LeopoldshafenBastiaSpeyerBufteaMannheimLüneburgHannoverLudwigshafen am RheinLampertheimRiedstadtBaden-BadenGabrovoEschbornMarburg an der LahnGießenHattersheimWormsRüsselsheim am MainBucharestKönigstein im TaunusLübeckVoluntariRusePopeşti-LeordeniWetzlarMainzFreiburgWiesbadenWalsrodeKehlRintelnHamburgLörrachStrasbourgMüllheimLimburg an der LahnKaiserslauternBad KreuznachHalstenbekBuxtehudeDimitrovgradHaskovoWarsteinNetphenBielefeldKielOytenSoestOlpeItzehoeBremenDelmenhorstLüdenscheidUnnaOsnabrückBremerhavenMünsterOldenburgCuxhavenFriesoytheWilhelmshavenGevgelijaCalafatGoriziaDevínska Nová VesJastrzębie ZdrójMiskolcNovo MestoTrbovljePoznańSzczecinTeltowAmstettenSankt PöltenBellinzonaRzeszówWittenbergZagrebAnsfeldenInnsbruckWelsKazincbarcikaBraşovPljevljaRadomskoBerlinLjubljanaKlosterneuburgCzechowice-DziedziceMielecSteyrDębicaNyíregyházaCeljeMariborKaliszPécsKönigs WusterhausenBudapestLuganoEsztergomBrzegJelenia GóraGorzów WielkopolskiEisenzickenMödlingSzegedSarajevoGyőrBlankenfelde-MahlowGyöngyösGyálBijelo PoljeViennaKędzierzyn-KoźleFrankfurt (Oder)OpoleCottbusDunaújvárosVeszprémPerchtoldsdorfWrocławStrausbergŻywiecTarnówPtujZielona GóraLubnjowEisenhüttenstadtŻaryKłodzko
6 Jan78910111213
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

PljevljaPljevlja, 6 January: 146.0 µg/m³, 2.3× usualPljevlja, 7 January: no readingPljevlja, 8 January: no readingPljevlja, 9 January: 147.0 µg/m³, 2.4× usualPljevlja, 10 January: 74.3 µg/m³, 1.2× usualPljevlja, 11 January: no readingPljevlja, 12 January: 61.4 µg/m³, 1.0× usualPljevlja, 13 January: 186.0 µg/m³, 3.0× usualKłodzkoKłodzko, 6 January: 120.0 µg/m³, 5.6× usualKłodzko, 7 January: no readingKłodzko, 8 January: no readingKłodzko, 9 January: 152.0 µg/m³, 7.1× usualKłodzko, 10 January: 56.1 µg/m³, 2.6× usualKłodzko, 11 January: 10.1 µg/m³, 0.5× usualKłodzko, 12 January: 60.8 µg/m³, 2.8× usualKłodzko, 13 January: 36.8 µg/m³, 1.7× usualŻywiecŻywiec, 6 January: 71.4 µg/m³, 2.4× usualŻywiec, 7 January: no readingŻywiec, 8 January: no readingŻywiec, 9 January: 91.6 µg/m³, 3.1× usualŻywiec, 10 January: 133.0 µg/m³, 4.5× usualŻywiec, 11 January: 32.1 µg/m³, 1.1× usualŻywiec, 12 January: 38.3 µg/m³, 1.3× usualŻywiec, 13 January: 25.2 µg/m³, 0.9× usualRadomskoRadomsko, 6 January: 126.0 µg/m³, 6.0× usualRadomsko, 7 January: no readingRadomsko, 8 January: no readingRadomsko, 9 January: 49.8 µg/m³, 2.4× usualRadomsko, 10 January: 49.1 µg/m³, 2.3× usualRadomsko, 11 January: 25.9 µg/m³, 1.2× usualRadomsko, 12 January: 27.0 µg/m³, 1.3× usualRadomsko, 13 January: 63.3 µg/m³, 3.0× usualKaliszKalisz, 6 January: 112.0 µg/m³, 5.5× usualKalisz, 7 January: no readingKalisz, 8 January: no readingKalisz, 9 January: 56.2 µg/m³, 2.8× usualKalisz, 10 January: 33.4 µg/m³, 1.6× usualKalisz, 11 January: 11.1 µg/m³, 0.5× usualKalisz, 12 January: 32.4 µg/m³, 1.6× usualKalisz, 13 January: 65.3 µg/m³, 3.2× usualOpoleOpole, 6 January: 70.0 µg/m³, 3.2× usualOpole, 7 January: no readingOpole, 8 January: no readingOpole, 9 January: 85.8 µg/m³, 3.9× usualOpole, 10 January: 29.7 µg/m³, 1.3× usualOpole, 11 January: 9.1 µg/m³, 0.4× usualOpole, 12 January: 22.4 µg/m³, 1.0× usualOpole, 13 January: 33.3 µg/m³, 1.5× usualTarnówTarnów, 6 January: 44.5 µg/m³, 2.6× usualTarnów, 7 January: no readingTarnów, 8 January: no readingTarnów, 9 January: 68.3 µg/m³, 4.0× usualTarnów, 10 January: 75.7 µg/m³, 4.5× usualTarnów, 11 January: 18.8 µg/m³, 1.1× usualTarnów, 12 January: 34.0 µg/m³, 2.0× usualTarnów, 13 January: 43.7 µg/m³, 2.6× usualWrocławWrocław, 6 January: 42.1 µg/m³, 2.4× usualWrocław, 7 January: no readingWrocław, 8 January: no readingWrocław, 9 January: 74.0 µg/m³, 4.2× usualWrocław, 10 January: 28.3 µg/m³, 1.6× usualWrocław, 11 January: 11.3 µg/m³, 0.6× usualWrocław, 12 January: 21.0 µg/m³, 1.2× usualWrocław, 13 January: 36.9 µg/m³, 2.1× usualPoznańPoznań, 6 January: 71.3 µg/m³, 3.9× usualPoznań, 7 January: no readingPoznań, 8 January: no readingPoznań, 9 January: 39.7 µg/m³, 2.2× usualPoznań, 10 January: 15.5 µg/m³, 0.9× usualPoznań, 11 January: 5.2 µg/m³, 0.3× usualPoznań, 12 January: 29.7 µg/m³, 1.6× usualPoznań, 13 January: 64.9 µg/m³, 3.6× usualJastrzębie ZdrójJastrzębie Zdrój, 6 January: 69.5 µg/m³, 2.8× usualJastrzębie Zdrój, 7 January: no readingJastrzębie Zdrój, 8 January: no readingJastrzębie Zdrój, 9 January: 50.5 µg/m³, 2.0× usualJastrzębie Zdrój, 10 January: 52.5 µg/m³, 2.1× usualJastrzębie Zdrój, 11 January: 17.0 µg/m³, 0.7× usualJastrzębie Zdrój, 12 January: 21.0 µg/m³, 0.8× usualJastrzębie Zdrój, 13 January: 22.6 µg/m³, 0.9× usualKędzierzyn-KoźleKędzierzyn-Koźle, 6 January: 42.7 µg/m³, 2.3× usualKędzierzyn-Koźle, 7 January: no readingKędzierzyn-Koźle, 8 January: no readingKędzierzyn-Koźle, 9 January: 68.2 µg/m³, 3.7× usualKędzierzyn-Koźle, 10 January: 30.9 µg/m³, 1.7× usualKędzierzyn-Koźle, 11 January: 5.5 µg/m³, 0.3× usualKędzierzyn-Koźle, 12 January: 14.5 µg/m³, 0.8× usualKędzierzyn-Koźle, 13 January: 21.7 µg/m³, 1.2× usualGorzów WielkopolskiGorzów Wielkopolski, 6 January: 54.7 µg/m³, 3.6× usualGorzów Wielkopolski, 7 January: no readingGorzów Wielkopolski, 8 January: no readingGorzów Wielkopolski, 9 January: 47.3 µg/m³, 3.1× usualGorzów Wielkopolski, 10 January: 15.1 µg/m³, 1.0× usualGorzów Wielkopolski, 11 January: 4.5 µg/m³, 0.3× usualGorzów Wielkopolski, 12 January: 38.8 µg/m³, 2.5× usualGorzów Wielkopolski, 13 January: 66.0 µg/m³, 4.3× usualJelenia GóraJelenia Góra, 6 January: 64.6 µg/m³, 3.8× usualJelenia Góra, 7 January: no readingJelenia Góra, 8 January: no readingJelenia Góra, 9 January: 50.8 µg/m³, 3.0× usualJelenia Góra, 10 January: 24.9 µg/m³, 1.5× usualJelenia Góra, 11 January: 8.9 µg/m³, 0.5× usualJelenia Góra, 12 January: 34.8 µg/m³, 2.1× usualJelenia Góra, 13 January: 20.4 µg/m³, 1.2× usualŻaryŻary, 6 January: 25.8 µg/m³, 2.4× usualŻary, 7 January: no readingŻary, 8 January: no readingŻary, 9 January: 62.7 µg/m³, 5.9× usualŻary, 10 January: 22.0 µg/m³, 2.1× usualŻary, 11 January: 6.1 µg/m³, 0.6× usualŻary, 12 January: 30.9 µg/m³, 2.9× usualŻary, 13 January: 22.9 µg/m³, 2.1× usualCzechowice-DziedziceCzechowice-Dziedzice, 6 January: 61.9 µg/m³, 3.4× usualCzechowice-Dziedzice, 7 January: no readingCzechowice-Dziedzice, 8 January: no readingCzechowice-Dziedzice, 9 January: 40.8 µg/m³, 2.2× usualCzechowice-Dziedzice, 10 January: 48.2 µg/m³, 2.6× usualCzechowice-Dziedzice, 11 January: 13.1 µg/m³, 0.7× usualCzechowice-Dziedzice, 12 January: 26.2 µg/m³, 1.4× usualCzechowice-Dziedzice, 13 January: 53.6 µg/m³, 2.9× usualRzeszówRzeszów, 6 January: 45.5 µg/m³, 2.3× usualRzeszów, 7 January: no readingRzeszów, 8 January: no readingRzeszów, 9 January: 43.0 µg/m³, 2.2× usualRzeszów, 10 January: 34.8 µg/m³, 1.8× usualRzeszów, 11 January: 18.2 µg/m³, 0.9× usualRzeszów, 12 January: 20.4 µg/m³, 1.1× usualRzeszów, 13 January: 26.1 µg/m³, 1.3× usualBijelo PoljeBijelo Polje, 6 January: 88.9 µg/m³, 1.5× usualBijelo Polje, 7 January: no readingBijelo Polje, 8 January: no readingBijelo Polje, 9 January: 159.0 µg/m³, 2.7× usualBijelo Polje, 10 January: 210.0 µg/m³, 3.6× usualBijelo Polje, 11 January: 33.5 µg/m³, 0.6× usualBijelo Polje, 12 January: 35.4 µg/m³, 0.6× usualBijelo Polje, 13 January: 102.0 µg/m³, 1.8× usualSarajevoSarajevo, 6 January: 36.6 µg/m³, 0.7× usualSarajevo, 7 January: 37.7 µg/m³, 0.7× usualSarajevo, 8 January: 44.6 µg/m³, 0.9× usualSarajevo, 9 January: 162.0 µg/m³, 3.2× usualSarajevo, 10 January: 69.6 µg/m³, 1.4× usualSarajevo, 11 January: 31.8 µg/m³, 0.6× usualSarajevo, 12 January: 99.2 µg/m³, 2.0× usualSarajevo, 13 January: 119.0 µg/m³, 2.3× usualZagrebZagreb, 6 January: 30.8 µg/m³, 0.8× usualZagreb, 7 January: 35.6 µg/m³, 0.9× usualZagreb, 8 January: 66.7 µg/m³, 1.6× usualZagreb, 9 January: 92.0 µg/m³, 2.3× usualZagreb, 10 January: 71.4 µg/m³, 1.8× usualZagreb, 11 January: 23.7 µg/m³, 0.6× usualZagreb, 12 January: 74.5 µg/m³, 1.8× usualZagreb, 13 January: 36.9 µg/m³, 0.9× usualPtujPtuj, 6 January: 17.9 µg/m³, 1.1× usualPtuj, 7 January: no readingPtuj, 8 January: no readingPtuj, 9 January: 77.6 µg/m³, 4.6× usualPtuj, 10 January: 40.5 µg/m³, 2.4× usualPtuj, 11 January: 15.1 µg/m³, 0.9× usualPtuj, 12 January: 56.4 µg/m³, 3.3× usualPtuj, 13 January: 45.1 µg/m³, 2.7× usualDębicaDębica, 6 January: 38.1 µg/m³, 1.5× usualDębica, 7 January: no readingDębica, 8 January: no readingDębica, 9 January: 67.3 µg/m³, 2.7× usualDębica, 10 January: 53.3 µg/m³, 2.2× usualDębica, 11 January: 14.8 µg/m³, 0.6× usualDębica, 12 January: 32.4 µg/m³, 1.3× usualDębica, 13 January: 42.2 µg/m³, 1.7× usualBrzegBrzeg, 6 January: 45.3 µg/m³, 2.1× usualBrzeg, 7 January: no readingBrzeg, 8 January: no readingBrzeg, 9 January: 65.4 µg/m³, 3.0× usualBrzeg, 10 January: 20.3 µg/m³, 0.9× usualBrzeg, 11 January: 6.3 µg/m³, 0.3× usualBrzeg, 12 January: 16.8 µg/m³, 0.8× usualBrzeg, 13 January: 24.4 µg/m³, 1.1× usualKazincbarcikaKazincbarcika, 6 January: 29.6 µg/m³, 1.0× usualKazincbarcika, 7 January: no readingKazincbarcika, 8 January: no readingKazincbarcika, 9 January: 63.5 µg/m³, 2.3× usualKazincbarcika, 10 January: 55.7 µg/m³, 2.0× usualKazincbarcika, 11 January: 32.0 µg/m³, 1.1× usualKazincbarcika, 12 January: 41.8 µg/m³, 1.5× usualKazincbarcika, 13 January: 57.2 µg/m³, 2.0× usualCeljeCelje, 6 January: 16.5 µg/m³, 0.8× usualCelje, 7 January: no readingCelje, 8 January: no readingCelje, 9 January: 60.9 µg/m³, 2.8× usualCelje, 10 January: 19.3 µg/m³, 0.9× usualCelje, 11 January: 20.5 µg/m³, 0.9× usualCelje, 12 January: 42.3 µg/m³, 1.9× usualCelje, 13 January: 12.0 µg/m³, 0.5× usualGyőrGyőr, 6 January: 16.0 µg/m³, 0.9× usualGyőr, 7 January: no readingGyőr, 8 January: no readingGyőr, 9 January: 41.3 µg/m³, 2.3× usualGyőr, 10 January: 58.2 µg/m³, 3.3× usualGyőr, 11 January: 12.2 µg/m³, 0.7× usualGyőr, 12 January: 14.6 µg/m³, 0.8× usualGyőr, 13 January: 39.1 µg/m³, 2.2× usualZielona GóraZielona Góra, 6 January: 23.3 µg/m³, 2.0× usualZielona Góra, 7 January: no readingZielona Góra, 8 January: no readingZielona Góra, 9 January: 54.4 µg/m³, 4.7× usualZielona Góra, 10 January: 22.0 µg/m³, 1.9× usualZielona Góra, 11 January: 9.9 µg/m³, 0.9× usualZielona Góra, 12 January: 22.1 µg/m³, 1.9× usualZielona Góra, 13 January: 44.1 µg/m³, 3.8× usualEisenzickenEisenzicken, 6 January: 12.7 µg/m³, 0.8× usualEisenzicken, 7 January: no readingEisenzicken, 8 January: no readingEisenzicken, 9 January: 30.3 µg/m³, 1.8× usualEisenzicken, 10 January: 50.6 µg/m³, 3.1× usualEisenzicken, 11 January: 7.1 µg/m³, 0.4× usualEisenzicken, 12 January: 16.5 µg/m³, 1.0× usualEisenzicken, 13 January: 23.3 µg/m³, 1.4× usualNyíregyházaNyíregyháza, 6 January: 18.8 µg/m³, 1.1× usualNyíregyháza, 7 January: 19.8 µg/m³, 1.1× usualNyíregyháza, 8 January: 26.0 µg/m³, 1.5× usualNyíregyháza, 9 January: 40.5 µg/m³, 2.3× usualNyíregyháza, 10 January: 46.8 µg/m³, 2.7× usualNyíregyháza, 11 January: 26.6 µg/m³, 1.5× usualNyíregyháza, 12 January: 29.0 µg/m³, 1.6× usualNyíregyháza, 13 January: 35.3 µg/m³, 2.0× usualSzegedSzeged, 6 January: 20.5 µg/m³, 1.4× usualSzeged, 7 January: 16.2 µg/m³, 1.1× usualSzeged, 8 January: 22.8 µg/m³, 1.6× usualSzeged, 9 January: 31.0 µg/m³, 2.2× usualSzeged, 10 January: 45.1 µg/m³, 3.1× usualSzeged, 11 January: 27.1 µg/m³, 1.9× usualSzeged, 12 January: 12.8 µg/m³, 0.9× usualSzeged, 13 January: 26.4 µg/m³, 1.8× usualLjubljanaLjubljana, 6 January: 10.4 µg/m³, 0.6× usualLjubljana, 7 January: no readingLjubljana, 8 January: no readingLjubljana, 9 January: 45.0 µg/m³, 2.5× usualLjubljana, 10 January: 35.1 µg/m³, 2.0× usualLjubljana, 11 January: 19.5 µg/m³, 1.1× usualLjubljana, 12 January: 41.7 µg/m³, 2.3× usualLjubljana, 13 January: 28.6 µg/m³, 1.6× usualPerchtoldsdorfPerchtoldsdorf, 6 January: 12.6 µg/m³, 1.1× usualPerchtoldsdorf, 7 January: no readingPerchtoldsdorf, 8 January: no readingPerchtoldsdorf, 9 January: 29.1 µg/m³, 2.6× usualPerchtoldsdorf, 10 January: 44.9 µg/m³, 4.0× usualPerchtoldsdorf, 11 January: 7.2 µg/m³, 0.6× usualPerchtoldsdorf, 12 January: 18.4 µg/m³, 1.6× usualPerchtoldsdorf, 13 January: 33.5 µg/m³, 3.0× usualNovo MestoNovo Mesto, 6 January: 9.8 µg/m³, 0.5× usualNovo Mesto, 7 January: no readingNovo Mesto, 8 January: no readingNovo Mesto, 9 January: 43.8 µg/m³, 2.1× usualNovo Mesto, 10 January: 44.6 µg/m³, 2.2× usualNovo Mesto, 11 January: 22.8 µg/m³, 1.1× usualNovo Mesto, 12 January: 34.8 µg/m³, 1.7× usualNovo Mesto, 13 January: 21.6 µg/m³, 1.0× usualEisenhüttenstadtEisenhüttenstadt, 6 January: 16.0 µg/m³, 2.0× usualEisenhüttenstadt, 7 January: no readingEisenhüttenstadt, 8 January: no readingEisenhüttenstadt, 9 January: 43.7 µg/m³, 5.5× usualEisenhüttenstadt, 10 January: 12.7 µg/m³, 1.6× usualEisenhüttenstadt, 11 January: 4.4 µg/m³, 0.6× usualEisenhüttenstadt, 12 January: 16.7 µg/m³, 2.1× usualEisenhüttenstadt, 13 January: 21.1 µg/m³, 2.7× usualPécsPécs, 6 January: 12.7 µg/m³, 0.8× usualPécs, 7 January: 15.2 µg/m³, 1.0× usualPécs, 8 January: 18.0 µg/m³, 1.1× usualPécs, 9 January: 36.7 µg/m³, 2.3× usualPécs, 10 January: 43.6 µg/m³, 2.8× usualPécs, 11 January: 16.6 µg/m³, 1.1× usualPécs, 12 January: 16.0 µg/m³, 1.0× usualPécs, 13 January: 27.7 µg/m³, 1.8× usualViennaVienna, 6 January: 12.7 µg/m³, 1.1× usualVienna, 7 January: no readingVienna, 8 January: no readingVienna, 9 January: 29.9 µg/m³, 2.6× usualVienna, 10 January: 42.2 µg/m³, 3.6× usualVienna, 11 January: 7.4 µg/m³, 0.6× usualVienna, 12 January: 16.4 µg/m³, 1.4× usualVienna, 13 January: 32.1 µg/m³, 2.8× usualGoriziaGorizia, 6 January: 5.2 µg/m³, 0.3× usualGorizia, 7 January: no readingGorizia, 8 January: no readingGorizia, 9 January: 30.9 µg/m³, 2.0× usualGorizia, 10 January: 18.5 µg/m³, 1.2× usualGorizia, 11 January: 15.7 µg/m³, 1.0× usualGorizia, 12 January: 29.7 µg/m³, 2.0× usualGorizia, 13 January: 40.7 µg/m³, 2.7× usualMariborMaribor, 6 January: 17.2 µg/m³, 1.2× usualMaribor, 7 January: no readingMaribor, 8 January: no readingMaribor, 9 January: 40.2 µg/m³, 2.8× usualMaribor, 10 January: 16.6 µg/m³, 1.1× usualMaribor, 11 January: 10.0 µg/m³, 0.7× usualMaribor, 12 January: 21.2 µg/m³, 1.5× usualMaribor, 13 January: 25.3 µg/m³, 1.7× usualTrbovljeTrbovlje, 6 January: 12.3 µg/m³, 0.7× usualTrbovlje, 7 January: no readingTrbovlje, 8 January: no readingTrbovlje, 9 January: 38.5 µg/m³, 2.2× usualTrbovlje, 10 January: 30.4 µg/m³, 1.7× usualTrbovlje, 11 January: 24.8 µg/m³, 1.4× usualTrbovlje, 12 January: 21.5 µg/m³, 1.2× usualTrbovlje, 13 January: 12.9 µg/m³, 0.7× usualWelsWels, 6 January: 20.4 µg/m³, 1.5× usualWels, 7 January: no readingWels, 8 January: no readingWels, 9 January: 30.0 µg/m³, 2.3× usualWels, 10 January: 6.6 µg/m³, 0.5× usualWels, 11 January: 9.4 µg/m³, 0.7× usualWels, 12 January: 30.4 µg/m³, 2.3× usualWels, 13 January: 36.1 µg/m³, 2.7× usualMödlingMödling, 6 January: 13.8 µg/m³, 1.2× usualMödling, 7 January: no readingMödling, 8 January: no readingMödling, 9 January: 28.4 µg/m³, 2.5× usualMödling, 10 January: 34.8 µg/m³, 3.1× usualMödling, 11 January: 7.7 µg/m³, 0.7× usualMödling, 12 January: 16.0 µg/m³, 1.4× usualMödling, 13 January: 30.8 µg/m³, 2.7× usualSzczecinSzczecin, 6 January: 21.4 µg/m³, 1.7× usualSzczecin, 7 January: no readingSzczecin, 8 January: no readingSzczecin, 9 January: 27.0 µg/m³, 2.2× usualSzczecin, 10 January: 11.1 µg/m³, 0.9× usualSzczecin, 11 January: 6.1 µg/m³, 0.5× usualSzczecin, 12 January: 17.4 µg/m³, 1.4× usualSzczecin, 13 January: 34.0 µg/m³, 2.7× usualCottbusCottbus, 6 January: 13.8 µg/m³, 1.6× usualCottbus, 7 January: no readingCottbus, 8 January: no readingCottbus, 9 January: 33.3 µg/m³, 3.9× usualCottbus, 10 January: 15.1 µg/m³, 1.8× usualCottbus, 11 January: 6.3 µg/m³, 0.7× usualCottbus, 12 January: 12.3 µg/m³, 1.4× usualCottbus, 13 January: 13.4 µg/m³, 1.6× usualAnsfeldenAnsfelden, 6 January: 25.6 µg/m³, 1.8× usualAnsfelden, 7 January: no readingAnsfelden, 8 January: no readingAnsfelden, 9 January: 29.9 µg/m³, 2.1× usualAnsfelden, 10 January: 32.8 µg/m³, 2.3× usualAnsfelden, 11 January: 12.9 µg/m³, 0.9× usualAnsfelden, 12 January: 22.9 µg/m³, 1.6× usualAnsfelden, 13 January: 29.7 µg/m³, 2.1× usualLubnjowLubnjow, 6 January: 11.0 µg/m³, 1.6× usualLubnjow, 7 January: no readingLubnjow, 8 January: no readingLubnjow, 9 January: 32.7 µg/m³, 4.8× usualLubnjow, 10 January: 12.5 µg/m³, 1.8× usualLubnjow, 11 January: 5.4 µg/m³, 0.8× usualLubnjow, 12 January: 11.1 µg/m³, 1.6× usualLubnjow, 13 January: 12.3 µg/m³, 1.8× usualBellinzonaBellinzona, 6 January: 20.0 µg/m³, 1.4× usualBellinzona, 7 January: no readingBellinzona, 8 January: no readingBellinzona, 9 January: 30.6 µg/m³, 2.2× usualBellinzona, 10 January: 15.9 µg/m³, 1.1× usualBellinzona, 11 January: 2.1 µg/m³, 0.2× usualBellinzona, 12 January: 11.7 µg/m³, 0.8× usualBellinzona, 13 January: 17.7 µg/m³, 1.3× usualFrankfurt (Oder)Frankfurt (Oder), 6 January: 15.5 µg/m³, 1.9× usualFrankfurt (Oder), 7 January: no readingFrankfurt (Oder), 8 January: no readingFrankfurt (Oder), 9 January: 30.5 µg/m³, 3.8× usualFrankfurt (Oder), 10 January: 12.0 µg/m³, 1.5× usualFrankfurt (Oder), 11 January: 5.1 µg/m³, 0.6× usualFrankfurt (Oder), 12 January: 15.0 µg/m³, 1.9× usualFrankfurt (Oder), 13 January: 19.9 µg/m³, 2.5× usualStrausbergStrausberg, 6 January: 13.5 µg/m³, 2.0× usualStrausberg, 7 January: no readingStrausberg, 8 January: no readingStrausberg, 9 January: 29.8 µg/m³, 4.4× usualStrausberg, 10 January: 7.4 µg/m³, 1.1× usualStrausberg, 11 January: 4.1 µg/m³, 0.6× usualStrausberg, 12 January: 12.1 µg/m³, 1.8× usualStrausberg, 13 January: 12.0 µg/m³, 1.8× usualInnsbruckInnsbruck, 6 January: 19.3 µg/m³, 1.5× usualInnsbruck, 7 January: no readingInnsbruck, 8 January: no readingInnsbruck, 9 January: 28.7 µg/m³, 2.3× usualInnsbruck, 10 January: 14.5 µg/m³, 1.2× usualInnsbruck, 11 January: 15.1 µg/m³, 1.2× usualInnsbruck, 12 January: 12.9 µg/m³, 1.0× usualInnsbruck, 13 January: 21.0 µg/m³, 1.7× usualGevgelijaGevgelija, 6 January: 43.1 µg/m³, 1.1× usualGevgelija, 7 January: no readingGevgelija, 8 January: no readingGevgelija, 9 January: no readingGevgelija, 10 January: 79.3 µg/m³, 2.0× usualGevgelija, 11 January: no readingGevgelija, 12 January: no readingGevgelija, 13 January: 34.6 µg/m³, 0.9× usualMiskolcMiskolc, 6 January: 22.0 µg/m³, 0.8× usualMiskolc, 7 January: 15.7 µg/m³, 0.5× usualMiskolc, 8 January: 33.3 µg/m³, 1.1× usualMiskolc, 9 January: 57.2 µg/m³, 2.0× usualMiskolc, 10 January: 64.3 µg/m³, 2.2× usualMiskolc, 11 January: 51.9 µg/m³, 1.8× usualMiskolc, 12 January: 52.7 µg/m³, 1.8× usualMiskolc, 13 January: 51.0 µg/m³, 1.8× usualDunaújvárosDunaújváros, 6 January: 15.1 µg/m³, 1.1× usualDunaújváros, 7 January: no readingDunaújváros, 8 January: no readingDunaújváros, 9 January: 22.8 µg/m³, 1.7× usualDunaújváros, 10 January: 55.8 µg/m³, 4.0× usualDunaújváros, 11 January: 23.5 µg/m³, 1.7× usualDunaújváros, 12 January: 8.0 µg/m³, 0.6× usualDunaújváros, 13 January: 25.8 µg/m³, 1.9× usualGyálGyál, 6 January: 19.7 µg/m³, 1.3× usualGyál, 7 January: no readingGyál, 8 January: no readingGyál, 9 January: 22.5 µg/m³, 1.5× usualGyál, 10 January: 53.9 µg/m³, 3.6× usualGyál, 11 January: 33.3 µg/m³, 2.2× usualGyál, 12 January: 9.8 µg/m³, 0.7× usualGyál, 13 January: 36.6 µg/m³, 2.5× usualVeszprémVeszprém, 6 January: 11.1 µg/m³, 0.8× usualVeszprém, 7 January: no readingVeszprém, 8 January: no readingVeszprém, 9 January: 25.6 µg/m³, 2.0× usualVeszprém, 10 January: 52.6 µg/m³, 4.0× usualVeszprém, 11 January: 15.8 µg/m³, 1.2× usualVeszprém, 12 January: 9.4 µg/m³, 0.7× usualVeszprém, 13 January: 32.9 µg/m³, 2.5× usualEsztergomEsztergom, 6 January: 23.1 µg/m³, 1.4× usualEsztergom, 7 January: no readingEsztergom, 8 January: no readingEsztergom, 9 January: 29.8 µg/m³, 1.8× usualEsztergom, 10 January: 50.6 µg/m³, 3.0× usualEsztergom, 11 January: 33.2 µg/m³, 2.0× usualEsztergom, 12 January: no readingEsztergom, 13 January: 37.7 µg/m³, 2.2× usualBudapestBudapest, 6 January: 21.9 µg/m³, 1.4× usualBudapest, 7 January: no readingBudapest, 8 January: no readingBudapest, 9 January: 25.6 µg/m³, 1.6× usualBudapest, 10 January: 46.9 µg/m³, 2.9× usualBudapest, 11 January: 15.6 µg/m³, 1.0× usualBudapest, 12 January: 9.1 µg/m³, 0.6× usualBudapest, 13 January: 35.4 µg/m³, 2.2× usualMielecMielec, 6 January: 36.1 µg/m³, 2.1× usualMielec, 7 January: no readingMielec, 8 January: no readingMielec, 9 January: 32.1 µg/m³, 1.9× usualMielec, 10 January: 46.0 µg/m³, 2.7× usualMielec, 11 January: 13.8 µg/m³, 0.8× usualMielec, 12 January: 16.8 µg/m³, 1.0× usualMielec, 13 January: 32.4 µg/m³, 1.9× usualBraşovBraşov, 6 January: 22.3 µg/m³, 1.3× usualBraşov, 7 January: no readingBraşov, 8 January: no readingBraşov, 9 January: 18.2 µg/m³, 1.1× usualBraşov, 10 January: 39.9 µg/m³, 2.4× usualBraşov, 11 January: 12.3 µg/m³, 0.7× usualBraşov, 12 January: 10.5 µg/m³, 0.6× usualBraşov, 13 January: 28.8 µg/m³, 1.7× usualCalafatCalafat, 6 January: 11.6 µg/m³, 0.6× usualCalafat, 7 January: no readingCalafat, 8 January: no readingCalafat, 9 January: no readingCalafat, 10 January: 36.7 µg/m³, 2.0× usualCalafat, 11 January: 18.7 µg/m³, 1.0× usualCalafat, 12 January: 9.4 µg/m³, 0.5× usualCalafat, 13 January: 19.2 µg/m³, 1.0× usualKlosterneuburgKlosterneuburg, 6 January: 14.6 µg/m³, 1.0× usualKlosterneuburg, 7 January: no readingKlosterneuburg, 8 January: no readingKlosterneuburg, 9 January: 27.9 µg/m³, 2.0× usualKlosterneuburg, 10 January: 36.1 µg/m³, 2.6× usualKlosterneuburg, 11 January: 9.5 µg/m³, 0.7× usualKlosterneuburg, 12 January: 20.1 µg/m³, 1.4× usualKlosterneuburg, 13 January: 29.9 µg/m³, 2.1× usualDevínska Nová VesDevínska Nová Ves, 6 January: 13.6 µg/m³, 0.9× usualDevínska Nová Ves, 7 January: no readingDevínska Nová Ves, 8 January: no readingDevínska Nová Ves, 9 January: 20.9 µg/m³, 1.4× usualDevínska Nová Ves, 10 January: 31.9 µg/m³, 2.1× usualDevínska Nová Ves, 11 January: 12.3 µg/m³, 0.8× usualDevínska Nová Ves, 12 January: 10.9 µg/m³, 0.7× usualDevínska Nová Ves, 13 January: 22.2 µg/m³, 1.5× usual6 Jan78910111213
The 60 cities with the highest readings of 70, 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
KłodzkoLower Silesia, Poland2 152.09 January21.57.1×
RadomskoŁódź Voivodeship, Poland2 126.06 January20.96.0×
ŻaryLubusz, Poland1 62.79 January10.75.9×
EisenhüttenstadtBrandenburg, Germany1 43.79 January7.95.5×
KaliszGreater Poland, Poland1 112.06 January20.45.5×
LubnjowBrandenburg, Germany1 32.79 January6.84.8×
Zielona GóraLubusz, Poland1 54.49 January11.54.7×
PtujUrban Municipality of Ptuj, Slovenia2 77.69 January16.94.6×
ŻywiecSilesia, Poland2 133.010 January29.64.5×
TarnówLesser Poland, Poland2 75.710 January17.04.5×
StrausbergBrandenburg, Germany1 29.89 January6.84.4×
Gorzów WielkopolskiLubusz, Poland1 66.013 January15.34.3×
WrocławLower Silesia, Poland1 74.09 January17.84.2×
DunaújvárosFejér, Hungary1 55.810 January13.84.0×
VeszprémVeszprém, Hungary1 52.610 January13.14.0×
PerchtoldsdorfLower Austria, Austria2 44.910 January11.34.0×
PoznańGreater Poland, Poland1 71.36 January18.23.9×
OpoleOpole Voivodeship, Poland1 85.89 January22.13.9×
CottbusBrandenburg, Germany1 33.39 January8.63.9×
Jelenia GóraLower Silesia, Poland1 64.66 January16.93.8×
Frankfurt (Oder)Brandenburg, Germany1 30.59 January8.13.8×
Kędzierzyn-KoźleOpole Voivodeship, Poland1 68.29 January18.23.7×
ViennaVienna, Austria2 42.210 January11.63.6×
GyálPest County, Hungary1 53.910 January14.93.6×
Bijelo PoljeBijelo Polje, Montenegro2 210.010 January58.13.6×
GyöngyösHeves County, Hungary1 27.310 January7.73.5×
Blankenfelde-MahlowBrandenburg, Germany1 25.69 January7.53.4×
Czechowice-DziedziceSilesia, Poland2 61.96 January18.43.4×
GyőrGyőr-Moson-Sopron, Hungary2 58.210 January17.83.3×
SarajevoFederation of B&H, Bosnia and Herzegovina1 162.09 January50.73.2×
SzegedCsongrád, Hungary2 45.110 January14.43.1×
EisenzickenBurgenland, Austria2 50.610 January16.43.1×
MödlingLower Austria, Austria2 34.810 January11.43.1×
EsztergomKomárom-Esztergom, Hungary1 50.610 January16.83.0×
PljevljaPljevlja, Montenegro1 186.013 January62.33.0×
BrzegOpole Voivodeship, Poland1 65.49 January22.03.0×
BudapestBudapest, Hungary1 46.910 January16.12.9×
LuganoTicino, Switzerland1 25.59 January8.82.9×
Königs WusterhausenBrandenburg, Germany1 26.19 January9.32.8×
CeljeUrban Municipality of Celje, Slovenia1 60.99 January21.92.8×
Jastrzębie ZdrójSilesia, Poland2 69.56 January25.02.8×
PécsBaranya, Hungary2 43.610 January15.72.8×
MariborUrban Municipality of Maribor, Slovenia1 40.29 January14.52.8×
SzczecinWest Pomerania, Poland1 34.013 January12.42.7×
DębicaSubcarpathia, Poland2 67.39 January24.62.7×
WelsUpper Austria, Austria1 36.113 January13.22.7×
MielecSubcarpathia, Poland1 46.010 January17.12.7×
GoriziaFriuli Venezia Giulia, Italy1 40.713 January15.22.7×
NyíregyházaSzabolcs-Szatmár-Bereg, Hungary2 46.810 January17.62.7×
SteyrUpper Austria, Austria1 27.69 January10.42.7×
KlosterneuburgLower Austria, Austria1 36.110 January14.12.6×
LjubljanaLjubljana, Slovenia1 45.09 January18.02.5×
BerlinState of Berlin, Germany1 27.49 January11.32.4×
BraşovBrașov County, Romania1 39.910 January16.82.4×
RzeszówSubcarpathia, Poland1 45.56 January19.42.3×
AnsfeldenUpper Austria, Austria2 32.810 January14.02.3×
InnsbruckTyrol, Austria1 28.79 January12.62.3×
ZagrebZagreb, Croatia1 92.09 January40.82.3×
WittenbergSaxony-Anhalt, Germany1 25.09 January11.12.3×
KazincbarcikaBorsod-Abaúj-Zemplén, Hungary1 63.59 January28.22.3×
Sankt PöltenLower Austria, Austria1 26.09 January11.72.2×
AmstettenLower Austria, Austria2 27.113 January12.22.2×
MiskolcBorsod-Abaúj-Zemplén, Hungary1 64.310 January29.02.2×
BellinzonaTicino, Switzerland1 30.69 January13.92.2×
TeltowBrandenburg, Germany1 26.59 January12.12.2×
TrbovljeMunicipality of Trbovlje, Slovenia1 38.59 January17.62.2×
Novo MestoUrban Municipality of Novo Mesto, Slovenia2 44.610 January20.72.2×
Devínska Nová VesBratislava Region, Slovakia1 31.910 January15.02.1×
CalafatDolj, Romania1 36.710 January18.32.0×
GevgelijaGevgelija, North Macedonia1 79.310 January39.62.0×

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 Hungary

Number 4 of 22 episodes in Poland and Hungary since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 22.

Use this page

SmogRank, Eastern Europe, January 2026: 70 cities with PM2.5 at twice their usual or more, 9 to 10 January 2026, smogrank.com/episodes/2026-01-eastern-europe (accessed 2 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.