SmogRank / Episodes / Poland
Poland, Hungary and 2 more countries, January 2025
For 1 day, on 23 January 2025, 18 cities in Poland, Hungary, Bosnia and Herzegovina and 1 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: 121.0 µg/m³ on 23 January, about 2.1× its usual 58.4. Ended 23 January.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 18 in 4 countries
Days 1 23 January 2025
Worst day 23 January 18 cities counted
Furthest above usual 3.2× Świnoujście
Day by day
Play 23 January 18 cities at twice their usual or more
Třinec Český Těšín Cieszyn Havířov Frýdek-Místek Čadca Jastrzębie Zdrój Oščadnica Bohumín Ostrava Wodzisław Śląski Žilina Czechowice-Dziedzice Studénka Żywiec Racibórz Púchov Martin Valašské Meziříčí Katowice Opava Kędzierzyn-Koźle Prievidza Ružomberok Handlová Trenčín Zlín Partizánske Banská Bystrica Žiar nad Hronom Liptovský Mikuláš Žarnovica Přerov Zvolen Opole Kroměříž Olomouc Nitra Senica Šahy Sereď Trnava Radomsko Brzeg Lučenec Hnúšťa Poprad Revúca Veľká Lomnica Kolárovo Esztergom Senec Pezinok Komárno Moravská Třebová Slatina Chorvátsky Grob - Čierna Voda Malacky Łask Židenice Brno Kłodzko Bratislava Mikulov Wrocław Kalisz Devínska Nová Ves Győr Hainburg an der Donau Gyöngyös Łódź Szczytna Zgierz Kielce Krotoszyn Krompachy Tarnów Kazincbarcika Groß-Enzersdorf Veszprém Klosterneuburg Miskolc Vienna Bardejov Znojmo Skarżysko-Kamienna Prešov Eisenstadt Połaniec Mödling Perchtoldsdorf Košice Starachowice Dębica Hradec Králové Jasło Pardubice Tulln Mielec Čaňa Bad Vöslau Żyrardów Włocławek Radom Płock Jelenia Góra Wschowa Krosno Vranov nad Topľou Kolbuszowa Poznań Trebišov Sankt Pölten Pruszków Toruń Humenné Rzeszów Konstancin-Jeziorna Warsaw Bydgoszcz Nyíregyháza Legionowo Snina Otwock Wawer Nisko Lubań Liberec Mladá Boleslav Ciechanów Chrastava Sulechów Zielona Góra Weiz Murska Sobota Bogatynia Koprivnica Żary Bruck an der Mur Amstetten Jarosław Graz Przemyśl České Budějovice Leibnitz Prague Ptuj Lublin Maribor Voitsberg Sankt Valentin Enns Siedlce Steyr Kościerzyna Linz Kladno Olsztyn Děčín Futog Beroun Ansfelden Novi Sad Gorzów Wielkopolski Traun Bytów Eisenhüttenstadt Ústí nad Labem Wolfsberg Zamość Cottbus Celje Wels Tomaszów Lubelski Frankfurt (Oder) Teplice Trbovlje Rokycany Zagorje ob Savi Most Litvínov Wysokie Mazowieckie Zemun Surčin Lubnjow Novo Mesto Attnang-Puchheim Belgrade Pančevo Filmski Grad Pilsen Obrenovac Klagenfurt am Wörthersee Sremčica Vinča Ripanj Kadaň Elsterwerda Kołobrzeg Kranj Ljubljana Smederevo Travnik Schwedt (Oder) Lazarevac Valjevo Kostel Bihać Strausberg Königs Wusterhausen Schöneiche Neuenhagen Białystok Cluj-Napoca Dej Hallein Blankenfelde-Mahlow Mahlow Salzburg Bernau bei Berlin Berlin Luckenwalde Burghausen Sokolov Rijeka Teltow Kleinmachnow Kragujevac Saalfelden am Steinernen Meer Nova Gorica Potsdam Oranienburg Oberviechtach Gorizia Falkensee Traunreut Zell am See Dallgow-Döberitz Trostberg an der Alz Altenburg Wittenberg Koper Nauen Lienz Fürstenberg Bad Belzig Bor Bitterfeld-Wolfen Neubrandenburg Brandenburg an der Havel Neuruppin Negotin Stralsund Malchow Craiova Kaunas Barth Suwałki Świecie Szczecin Elbląg Kraków Banja Luka Szeged Dunaújváros Ełk Gdynia Liberpolis Augustów Kutno Bielsko-Biala Giżycko Gdańsk Pécs Świnoujście 20 Jan 21 22 23 24 25 26 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
Banja Luka Banja Luka, 20 January: 66.7 µg/m³ Banja Luka, 21 January: 96.7 µg/m³ Banja Luka, 22 January: 182.0 µg/m³ Banja Luka, 23 January: 121.0 µg/m³, 2.1× its usual 58.4 Banja Luka, 24 January: 39.5 µg/m³ Banja Luka, 25 January: 114.0 µg/m³ Banja Luka, 26 January: 121.0 µg/m³ Bielsko-Biala Bielsko-Biala, 20 January: 74.9 µg/m³ Bielsko-Biala, 21 January: 57.6 µg/m³ Bielsko-Biala, 22 January: 112.0 µg/m³ Bielsko-Biala, 23 January: 62.7 µg/m³, 2.5× its usual 24.9 Bielsko-Biala, 24 January: 18.0 µg/m³ Bielsko-Biala, 25 January: 15.9 µg/m³ Bielsko-Biala, 26 January: 14.8 µg/m³ Kraków Kraków, 20 January: 91.2 µg/m³ Kraków, 21 January: 58.9 µg/m³ Kraków, 22 January: 60.6 µg/m³ Kraków, 23 January: 53.4 µg/m³, 2.1× its usual 25.4 Kraków, 24 January: 29.6 µg/m³ Kraków, 25 January: 37.8 µg/m³ Kraków, 26 January: 27.0 µg/m³ Kutno Kutno, 20 January: 57.0 µg/m³ Kutno, 21 January: 48.6 µg/m³ Kutno, 22 January: 59.6 µg/m³ Kutno, 23 January: 48.2 µg/m³, 2.3× its usual 20.8 Kutno, 24 January: 29.7 µg/m³ Kutno, 25 January: 19.7 µg/m³ Kutno, 26 January: 28.1 µg/m³ Pécs Pécs, 20 January: 20.3 µg/m³ Pécs, 21 January: 17.9 µg/m³ Pécs, 22 January: 25.9 µg/m³ Pécs, 23 January: 47.5 µg/m³, 2.9× its usual 16.6 Pécs, 24 January: 13.8 µg/m³ Pécs, 25 January: 23.8 µg/m³ Pécs, 26 January: 23.8 µg/m³ Augustów Augustów, 20 January: 17.1 µg/m³ Augustów, 21 January: 42.6 µg/m³ Augustów, 22 January: 59.8 µg/m³ Augustów, 23 January: 47.3 µg/m³, 2.3× its usual 20.3 Augustów, 24 January: 40.8 µg/m³ Augustów, 25 January: 35.6 µg/m³ Augustów, 26 January: 31.4 µg/m³ Liberpolis Liberpolis, 20 January: 15.2 µg/m³ Liberpolis, 21 January: 18.0 µg/m³ Liberpolis, 22 January: 32.5 µg/m³ Liberpolis, 23 January: 37.2 µg/m³, 2.2× its usual 16.7 Liberpolis, 24 January: 13.1 µg/m³ Liberpolis, 25 January: 16.9 µg/m³ Liberpolis, 26 January: 19.7 µg/m³ Gdańsk Gdańsk, 20 January: 33.4 µg/m³ Gdańsk, 21 January: 38.4 µg/m³ Gdańsk, 22 January: 21.3 µg/m³ Gdańsk, 23 January: 35.7 µg/m³, 2.6× its usual 13.7 Gdańsk, 24 January: 21.6 µg/m³ Gdańsk, 25 January: 16.5 µg/m³ Gdańsk, 26 January: 20.0 µg/m³ Gdynia Gdynia, 20 January: 41.9 µg/m³ Gdynia, 21 January: 35.0 µg/m³ Gdynia, 22 January: 22.0 µg/m³ Gdynia, 23 January: 35.7 µg/m³, 2.2× its usual 16.2 Gdynia, 24 January: 22.1 µg/m³ Gdynia, 25 January: 17.4 µg/m³ Gdynia, 26 January: 15.0 µg/m³ Ełk Ełk, 20 January: 15.5 µg/m³ Ełk, 21 January: 36.7 µg/m³ Ełk, 22 January: 47.8 µg/m³ Ełk, 23 January: 34.9 µg/m³, 2.2× its usual 15.9 Ełk, 24 January: 22.8 µg/m³ Ełk, 25 January: 22.6 µg/m³ Ełk, 26 January: 21.2 µg/m³ Dunaújváros Dunaújváros, 20 January: 8.9 µg/m³ Dunaújváros, 21 January: 13.8 µg/m³ Dunaújváros, 22 January: 21.4 µg/m³ Dunaújváros, 23 January: 32.2 µg/m³, 2.2× its usual 14.6 Dunaújváros, 24 January: 20.5 µg/m³ Dunaújváros, 25 January: 19.6 µg/m³ Dunaújváros, 26 January: 21.8 µg/m³ Elbląg Elbląg, 20 January: 25.1 µg/m³ Elbląg, 21 January: 49.6 µg/m³ Elbląg, 22 January: 28.1 µg/m³ Elbląg, 23 January: 32.2 µg/m³, 2.1× its usual 15.3 Elbląg, 24 January: 22.7 µg/m³ Elbląg, 25 January: 19.6 µg/m³ Elbląg, 26 January: 28.0 µg/m³ Świnoujście Świnoujście, 20 January: 43.4 µg/m³ Świnoujście, 21 January: 21.4 µg/m³ Świnoujście, 22 January: 35.3 µg/m³ Świnoujście, 23 January: 31.7 µg/m³, 3.2× its usual 9.8 Świnoujście, 24 January: 10.1 µg/m³ Świnoujście, 25 January: 7.8 µg/m³ Świnoujście, 26 January: 9.8 µg/m³ Szczecin Szczecin, 20 January: 47.4 µg/m³ Szczecin, 21 January: 25.8 µg/m³ Szczecin, 22 January: 36.0 µg/m³ Szczecin, 23 January: 31.3 µg/m³, 2.1× its usual 15.1 Szczecin, 24 January: 11.2 µg/m³ Szczecin, 25 January: 7.4 µg/m³ Szczecin, 26 January: 10.5 µg/m³ Giżycko Giżycko, 20 January: 10.6 µg/m³ Giżycko, 21 January: 36.7 µg/m³ Giżycko, 22 January: 33.4 µg/m³ Giżycko, 23 January: 31.2 µg/m³, 2.6× its usual 12.2 Giżycko, 24 January: 17.0 µg/m³ Giżycko, 25 January: 18.3 µg/m³ Giżycko, 26 January: 17.7 µg/m³ Świecie Świecie, 20 January: 40.2 µg/m³ Świecie, 21 January: 49.5 µg/m³ Świecie, 22 January: 29.3 µg/m³ Świecie, 23 January: 31.0 µg/m³, 2.1× its usual 15.1 Świecie, 24 January: 17.6 µg/m³ Świecie, 25 January: 13.5 µg/m³ Świecie, 26 January: 23.0 µg/m³ Suwałki Suwałki, 20 January: 9.7 µg/m³ Suwałki, 21 January: 28.0 µg/m³ Suwałki, 22 January: 38.6 µg/m³ Suwałki, 23 January: 30.7 µg/m³, 2.1× its usual 14.4 Suwałki, 24 January: 20.9 µg/m³ Suwałki, 25 January: 20.1 µg/m³ Suwałki, 26 January: 16.4 µg/m³ Szeged Szeged, 20 January: 7.2 µg/m³ Szeged, 21 January: 14.3 µg/m³ Szeged, 22 January: 25.0 µg/m³ Szeged, 23 January: 30.3 µg/m³, 2.2× its usual 13.8 Szeged, 24 January: 26.8 µg/m³ Szeged, 25 January: 22.7 µg/m³ Szeged, 26 January: 14.6 µg/m³ 20 Jan 21 22 23 24 25 26 Every counted city, 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. Good 0–50
Moderate 51–100
Sensitive groups 101–150
Unhealthy 151–200
Very unhealthy 201–300
Hazardous 301+
Every city it reached
City Days Highest Usual Above usual
Świnoujście West Pomerania, Poland 1 23 January 9.8 3.2× Pécs Baranya, Hungary 1 23 January 16.6 2.9× Gdańsk Pomerania, Poland 1 23 January 13.7 2.6× Giżycko Warmia-Masuria, Poland 1 23 January 12.2 2.6× Bielsko-Biala Silesia, Poland 1 23 January 24.9 2.5× Kutno Łódź Voivodeship, Poland 1 23 January 20.8 2.3× Augustów Podlasie, Poland 1 23 January 20.3 2.3× Liberpolis County of Osijek-Baranja, Croatia 1 23 January 16.7 2.2× Gdynia Pomerania, Poland 1 23 January 16.2 2.2× Ełk Warmia-Masuria, Poland 1 23 January 15.9 2.2× Dunaújváros Fejér, Hungary 1 23 January 14.6 2.2× Szeged Csongrád, Hungary 1 23 January 13.8 2.2× Banja Luka Srpska, Bosnia and Herzegovina 1 23 January 58.4 2.1× Kraków Lesser Poland, Poland 1 23 January 25.4 2.1× Elbląg Warmia-Masuria, Poland 1 23 January 15.3 2.1× Szczecin West Pomerania, Poland 1 23 January 15.1 2.1× Świecie Kujawsko-Pomorskie, Poland 1 23 January 15.1 2.1× Suwałki Podlasie, Poland 1 23 January 14.4 2.1×
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 Poland and Hungary
Number 23 of 38 episodes in Poland and Hungary since our records began, by cities reached.
Eastern Europe, October and November 2024 161 Eastern Europe, 16 to 21 December 2025 129 Eastern Europe, January 2026 86 Europe, 8 to 10 November 2025 84 Germany, Poland and Czechia, February 2026 67 Eastern Europe, 3 to 7 December 2025 64 Europe, 17 to 22 March 2023 64 Eastern Europe, 30 November to 8 December 2024 61 Eastern and northern Europe, September 2023 58 Europe, 28 to 31 January 2024 53 Poland, September 2024 52 Poland, January 2026 46 Poland, Hungary and 2 more countries, January 2025 18 Bars: cities reached; colour: the level of the episode's highest daily reading. All 38 .
Use this page SmogRank, Poland, Hungary and 2 more countries, January 2025: 18 cities with PM2.5 at twice their usual or more, 23 January 2025, smogrank.com/episodes/2025-01-poland-hungary-and-2-more-countries (accessed 5 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.
