SmogRank / Episodes / Poland
Poland, October 2025
For 2 days, from 8 to 9 October 2025, 15 cities in Poland, Latvia, Lithuania and 1 more countries had PM2.5 at least twice their usual for the time of year. The worst reading was Stodůlky, Prague, Czechia: 134.0 µg/m³ on 8 October, about 8.4× its usual 15.9.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 15 in 4 countries
Days 2 8 to 9 October 2025
Worst day 8 October 14 cities counted
Furthest above usual 8.4× Stodůlky
Day by day
Play 8 October 14 cities at twice their usual or more
Ciechanów Olsztyn Warsaw Pruszków Giżycko Konstancin-Jeziorna Otwock Żyrardów Płock Elbląg Kutno Włocławek Łódź Skarżysko-Kamienna Toruń Suwałki Świecie Łask Gdańsk Klaipėda Gdynia Radomsko Lublin Bydgoszcz Kościerzyna Mielec Liepāja Tarnów Kraków Rzeszów Bytów Katowice Zamość Jasło Krosno Krotoszyn Jarosław Czechowice-Dziedzice Tomaszów Lubelski Bielsko-Biala Opole Kędzierzyn-Koźle Żywiec Poznań Przemyśl Jastrzębie Zdrój Racibórz Brzeg Wrocław Vilnius Hranice Riga Kłodzko Olomouc Kołobrzeg Sulechów Zielona Góra Kalmar Jelenia Góra Gorzów Wielkopolski Hradec Králové Żary Lubań Pardubice Szczecin Eisenhüttenstadt Frankfurt (Oder) Schwedt (Oder) Świnoujście Cottbus Strausberg Říčany Lubnjow Prague Neuenhagen Königs Wusterhausen Bernau bei Berlin Berlin Blankenfelde-Mahlow Neubrandenburg Oranienburg Teltow Kalisz Nisko Dębica Legionowo Wawer Kielce Radom Białystok Starachowice Ełk Siedlce Kaunas Rēzekne Augustów Stodůlky 5 Oct 6 7 8 9 10 11 12 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
Stodůlky Stodůlky, 5 October: 254.3 µg/m³, 16× usual Stodůlky, 6 October: 208.6 µg/m³, 13× usual Stodůlky, 7 October: 171.9 µg/m³, 11× usual Stodůlky, 8 October: 134.0 µg/m³, 8.4× usual Stodůlky, 9 October: 189.4 µg/m³, 12× usual Stodůlky, 10 October: 209.3 µg/m³, 13× usual Stodůlky, 11 October: 192.9 µg/m³, 12× usual Stodůlky, 12 October: 196.0 µg/m³, 12× usual Siedlce Siedlce, 5 October: 10.1 µg/m³, 0.9× usual Siedlce, 6 October: 11.6 µg/m³, 1.0× usual Siedlce, 7 October: 29.6 µg/m³, 2.7× usual Siedlce, 8 October: 34.9 µg/m³, 3.1× usual Siedlce, 9 October: 37.5 µg/m³, 3.4× usual Siedlce, 10 October: no reading Siedlce, 11 October: no reading Siedlce, 12 October: no reading Augustów Augustów, 5 October: 16.2 µg/m³, 1.5× usual Augustów, 6 October: 15.2 µg/m³, 1.4× usual Augustów, 7 October: 15.5 µg/m³, 1.4× usual Augustów, 8 October: 49.1 µg/m³, 4.6× usual Augustów, 9 October: 36.6 µg/m³, 3.4× usual Augustów, 10 October: 7.5 µg/m³, 0.7× usual Augustów, 11 October: 12.4 µg/m³, 1.2× usual Augustów, 12 October: 6.4 µg/m³, 0.6× usual Radom Radom, 5 October: 10.0 µg/m³, 0.8× usual Radom, 6 October: 10.5 µg/m³, 0.8× usual Radom, 7 October: 22.4 µg/m³, 1.8× usual Radom, 8 October: 32.9 µg/m³, 2.6× usual Radom, 9 October: 26.8 µg/m³, 2.1× usual Radom, 10 October: 11.5 µg/m³, 0.9× usual Radom, 11 October: 9.5 µg/m³, 0.7× usual Radom, 12 October: 9.6 µg/m³, 0.8× usual Starachowice Starachowice, 5 October: 10.2 µg/m³, 0.9× usual Starachowice, 6 October: 11.6 µg/m³, 1.0× usual Starachowice, 7 October: 15.2 µg/m³, 1.3× usual Starachowice, 8 October: 31.3 µg/m³, 2.7× usual Starachowice, 9 October: 26.4 µg/m³, 2.3× usual Starachowice, 10 October: 9.3 µg/m³, 0.8× usual Starachowice, 11 October: 7.2 µg/m³, 0.6× usual Starachowice, 12 October: 6.7 µg/m³, 0.6× usual Rēzekne Rēzekne, 5 October: 15.0 µg/m³, 1.9× usual Rēzekne, 6 October: no reading Rēzekne, 7 October: no reading Rēzekne, 8 October: 28.3 µg/m³, 3.7× usual Rēzekne, 9 October: 15.7 µg/m³, 2.0× usual Rēzekne, 10 October: 5.8 µg/m³, 0.8× usual Rēzekne, 11 October: 5.1 µg/m³, 0.7× usual Rēzekne, 12 October: 3.7 µg/m³, 0.5× usual Kielce Kielce, 5 October: 9.4 µg/m³, 0.8× usual Kielce, 6 October: 9.8 µg/m³, 0.9× usual Kielce, 7 October: 10.6 µg/m³, 0.9× usual Kielce, 8 October: 28.0 µg/m³, 2.4× usual Kielce, 9 October: 29.7 µg/m³, 2.6× usual Kielce, 10 October: 9.0 µg/m³, 0.8× usual Kielce, 11 October: 6.9 µg/m³, 0.6× usual Kielce, 12 October: 8.1 µg/m³, 0.7× usual Kalisz Kalisz, 5 October: 8.3 µg/m³, 0.6× usual Kalisz, 6 October: 8.3 µg/m³, 0.6× usual Kalisz, 7 October: 13.3 µg/m³, 1.0× usual Kalisz, 8 October: 28.0 µg/m³, 2.1× usual Kalisz, 9 October: 13.1 µg/m³, 1.0× usual Kalisz, 10 October: 10.2 µg/m³, 0.8× usual Kalisz, 11 October: 10.8 µg/m³, 0.8× usual Kalisz, 12 October: 10.1 µg/m³, 0.7× usual Kaunas Kaunas, 5 October: 15.2 µg/m³, 1.9× usual Kaunas, 6 October: no reading Kaunas, 7 October: 15.2 µg/m³, 1.9× usual Kaunas, 8 October: 27.6 µg/m³, 3.5× usual Kaunas, 9 October: 17.2 µg/m³, 2.2× usual Kaunas, 10 October: 6.0 µg/m³, 0.8× usual Kaunas, 11 October: 5.0 µg/m³, 0.6× usual Kaunas, 12 October: 4.6 µg/m³, 0.6× usual Ełk Ełk, 5 October: 9.5 µg/m³, 1.1× usual Ełk, 6 October: 11.8 µg/m³, 1.3× usual Ełk, 7 October: 23.9 µg/m³, 2.7× usual Ełk, 8 October: 26.9 µg/m³, 3.1× usual Ełk, 9 October: 18.5 µg/m³, 2.1× usual Ełk, 10 October: 3.9 µg/m³, 0.4× usual Ełk, 11 October: 5.8 µg/m³, 0.7× usual Ełk, 12 October: 3.2 µg/m³, 0.4× usual Dębica Dębica, 5 October: 8.6 µg/m³, 0.7× usual Dębica, 6 October: 10.1 µg/m³, 0.9× usual Dębica, 7 October: 10.7 µg/m³, 0.9× usual Dębica, 8 October: 26.7 µg/m³, 2.3× usual Dębica, 9 October: 23.1 µg/m³, 2.0× usual Dębica, 10 October: 9.5 µg/m³, 0.8× usual Dębica, 11 October: 7.9 µg/m³, 0.7× usual Dębica, 12 October: 10.1 µg/m³, 0.9× usual Legionowo Legionowo, 5 October: 8.4 µg/m³, 0.7× usual Legionowo, 6 October: 7.3 µg/m³, 0.6× usual Legionowo, 7 October: 13.2 µg/m³, 1.2× usual Legionowo, 8 October: 26.3 µg/m³, 2.3× usual Legionowo, 9 October: 19.6 µg/m³, 1.7× usual Legionowo, 10 October: 8.4 µg/m³, 0.7× usual Legionowo, 11 October: 6.9 µg/m³, 0.6× usual Legionowo, 12 October: 5.7 µg/m³, 0.5× usual Nisko Nisko, 5 October: 14.2 µg/m³, 1.2× usual Nisko, 6 October: 15.7 µg/m³, 1.3× usual Nisko, 7 October: 23.8 µg/m³, 2.0× usual Nisko, 8 October: 25.7 µg/m³, 2.2× usual Nisko, 9 October: 24.8 µg/m³, 2.1× usual Nisko, 10 October: 10.7 µg/m³, 0.9× usual Nisko, 11 October: 8.1 µg/m³, 0.7× usual Nisko, 12 October: 7.4 µg/m³, 0.6× usual Wawer Wawer, 5 October: 10.3 µg/m³, 1.0× usual Wawer, 6 October: 10.1 µg/m³, 1.0× usual Wawer, 7 October: 13.6 µg/m³, 1.3× usual Wawer, 8 October: 25.2 µg/m³, 2.5× usual Wawer, 9 October: 25.1 µg/m³, 2.5× usual Wawer, 10 October: 8.6 µg/m³, 0.9× usual Wawer, 11 October: 8.4 µg/m³, 0.8× usual Wawer, 12 October: 7.5 µg/m³, 0.7× usual Białystok Białystok, 5 October: 10.0 µg/m³, 0.9× usual Białystok, 6 October: 8.7 µg/m³, 0.8× usual Białystok, 7 October: 15.0 µg/m³, 1.4× usual Białystok, 8 October: 23.5 µg/m³, 2.2× usual Białystok, 9 October: 29.0 µg/m³, 2.7× usual Białystok, 10 October: 5.3 µg/m³, 0.5× usual Białystok, 11 October: 7.3 µg/m³, 0.7× usual Białystok, 12 October: 4.6 µg/m³, 0.4× usual 5 Oct 6 7 8 9 10 11 12 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
Stodůlky Prague, Czechia 1 5 October 15.9 16× Augustów Podlasie, Poland 2 8 October 10.7 4.6× Rēzekne Rēzekne, Latvia 1 8 October 7.7 3.7× Kaunas Kaunas, Lithuania 1 8 October 7.8 3.5× Siedlce Mazovia, Poland 2 9 October 11.1 3.4× Ełk Warmia-Masuria, Poland 1 8 October 8.8 3.1× Białystok Podlasie, Poland 1 9 October 10.7 2.7× Starachowice Świętokrzyskie, Poland 2 8 October 11.7 2.7× Radom Mazovia, Poland 2 8 October 12.7 2.6× Kielce Świętokrzyskie, Poland 2 9 October 11.5 2.6× Wawer Mazovia, Poland 2 8 October 10.1 2.5× Legionowo Mazovia, Poland 1 8 October 11.3 2.3× Dębica Subcarpathia, Poland 1 8 October 11.5 2.3× Nisko Subcarpathia, Poland 1 8 October 11.8 2.2× Kalisz Greater Poland, Poland 1 8 October 13.6 2.1×
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 Latvia
Number 14 of 22 episodes in Poland and Latvia since our records began, by cities reached.
Eastern Europe, January 2025 123 Eastern Europe, December 2025 118 Eastern Europe, November 2025 71 Eastern Europe, January 2026 70 Poland and Germany, January 2026 59 Eastern Europe, March 2023 56 North-eastern Europe, December 2025 55 Germany and Poland, February 2026 54 Eastern Europe, September 2023 51 Poland, April 2026 32 Poland and Czechia, October 2025 25 Poland and Germany, November 2025 19 Poland, October 2025 15 Bars: cities reached; colour: the level of the episode's highest daily reading. All 22 .
Use this page SmogRank, Poland, October 2025: 15 cities with PM2.5 at twice their usual or more, 8 to 9 October 2025, smogrank.com/episodes/2025-10-poland (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.
