SmogRank / Episodes / Poland
Poland and Hungary, September 2024
For 2 days, from 4 to 5 September 2024, 22 cities in Poland, Hungary and Serbia had PM2.5 at least twice their usual for the time of year. The worst reading was Miskolc, Borsod-Abaúj-Zemplén, Hungary: 72.9 µg/m³ on 4 September, about 5.5× its usual 13.2.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 22 in 3 countries
Days 2 4 to 5 September 2024
Worst day 4 September 17 cities counted
Furthest above usual 5.5× Miskolc
Day by day
Play 4 September 17 cities at twice their usual or more
Bielsko-Biala Czechowice-Dziedzice Żywiec Jastrzębie Zdrój Katowice Racibórz Kędzierzyn-Koźle Strzelce Opolskie Kraków Opole Radomsko Tarnów Łódź Zgierz Kalisz Wrocław Kłodzko Skarżysko-Kamienna Dębica Jasło Żyrardów Radom Náchod Krosno Włocławek Płock Rzeszów Kościan Nyíregyháza Nisko Otwock Wawer Jelenia Góra Bydgoszcz Szeged Pułtusk Świecie Działdowo Jarosław Łuków Żary Olsztyn Kościerzyna Gdańsk Bytów Pančevo Belgrade Banja Luka Obrenovac Sremčica Grajewo Ełk Lazarevac Białystok Kołobrzeg Augustów Suwałki Kaunas Zemun Łask Lublin Debrecen Kutno Warsaw Gdynia Pruszków Kielce Toruń Legionowo Mielec Przemyśl Poznań Konstancin-Jeziorna Zamość Szczecin Elbląg Gorzów Wielkopolski Starachowice Zielona Góra Miskolc 1 Sep 2 3 4 5 6 7 8 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
Przemyśl Przemyśl, 1 September: 17.9 µg/m³, 1.9× usual Przemyśl, 2 September: 17.4 µg/m³, 1.8× usual Przemyśl, 3 September: 26.2 µg/m³, 2.8× usual Przemyśl, 4 September: 25.3 µg/m³, 2.7× usual Przemyśl, 5 September: 28.4 µg/m³, 3.0× usual Przemyśl, 6 September: 27.0 µg/m³, 2.8× usual Przemyśl, 7 September: 25.2 µg/m³, 2.7× usual Przemyśl, 8 September: 20.6 µg/m³, 2.2× usual Lublin Lublin, 1 September: 11.5 µg/m³, 1.2× usual Lublin, 2 September: 17.3 µg/m³, 1.7× usual Lublin, 3 September: 25.6 µg/m³, 2.6× usual Lublin, 4 September: 25.1 µg/m³, 2.5× usual Lublin, 5 September: 22.1 µg/m³, 2.2× usual Lublin, 6 September: 21.3 µg/m³, 2.2× usual Lublin, 7 September: 18.0 µg/m³, 1.8× usual Lublin, 8 September: 12.4 µg/m³, 1.3× usual Mielec Mielec, 1 September: 13.9 µg/m³, 1.5× usual Mielec, 2 September: 20.0 µg/m³, 2.2× usual Mielec, 3 September: 25.2 µg/m³, 2.8× usual Mielec, 4 September: 27.4 µg/m³, 3.0× usual Mielec, 5 September: 20.5 µg/m³, 2.3× usual Mielec, 6 September: 18.8 µg/m³, 2.1× usual Mielec, 7 September: 16.7 µg/m³, 1.9× usual Mielec, 8 September: 15.8 µg/m³, 1.8× usual Miskolc Miskolc, 1 September: 17.6 µg/m³, 1.3× usual Miskolc, 2 September: 18.8 µg/m³, 1.4× usual Miskolc, 3 September: 19.6 µg/m³, 1.5× usual Miskolc, 4 September: 72.9 µg/m³, 5.5× usual Miskolc, 5 September: 21.6 µg/m³, 1.6× usual Miskolc, 6 September: 19.1 µg/m³, 1.4× usual Miskolc, 7 September: 17.0 µg/m³, 1.3× usual Miskolc, 8 September: 16.9 µg/m³, 1.3× usual Starachowice Starachowice, 1 September: 8.3 µg/m³, 0.9× usual Starachowice, 2 September: 15.2 µg/m³, 1.7× usual Starachowice, 3 September: no reading Starachowice, 4 September: 39.4 µg/m³, 4.3× usual Starachowice, 5 September: 26.1 µg/m³, 2.9× usual Starachowice, 6 September: 18.5 µg/m³, 2.0× usual Starachowice, 7 September: 16.6 µg/m³, 1.8× usual Starachowice, 8 September: 15.1 µg/m³, 1.7× usual Kutno Kutno, 1 September: 8.1 µg/m³, 0.7× usual Kutno, 2 September: 11.3 µg/m³, 1.0× usual Kutno, 3 September: 19.1 µg/m³, 1.7× usual Kutno, 4 September: 28.4 µg/m³, 2.6× usual Kutno, 5 September: 24.4 µg/m³, 2.2× usual Kutno, 6 September: 19.1 µg/m³, 1.7× usual Kutno, 7 September: 17.3 µg/m³, 1.6× usual Kutno, 8 September: 16.2 µg/m³, 1.5× usual Elbląg Elbląg, 1 September: 9.7 µg/m³, 1.3× usual Elbląg, 2 September: 7.0 µg/m³, 0.9× usual Elbląg, 3 September: 17.4 µg/m³, 2.3× usual Elbląg, 4 September: 28.0 µg/m³, 3.7× usual Elbląg, 5 September: 18.1 µg/m³, 2.4× usual Elbląg, 6 September: 22.8 µg/m³, 3.0× usual Elbląg, 7 September: 22.7 µg/m³, 3.0× usual Elbląg, 8 September: 16.7 µg/m³, 2.2× usual Zemun Zemun, 1 September: no reading Zemun, 2 September: no reading Zemun, 3 September: no reading Zemun, 4 September: 27.6 µg/m³, 2.0× usual Zemun, 5 September: 25.9 µg/m³, 1.9× usual Zemun, 6 September: 24.9 µg/m³, 1.8× usual Zemun, 7 September: 15.7 µg/m³, 1.1× usual Zemun, 8 September: 13.0 µg/m³, 0.9× usual Pruszków Pruszków, 1 September: 8.1 µg/m³, 0.8× usual Pruszków, 2 September: 13.5 µg/m³, 1.3× usual Pruszków, 3 September: 20.2 µg/m³, 2.0× usual Pruszków, 4 September: 27.1 µg/m³, 2.7× usual Pruszków, 5 September: 19.3 µg/m³, 1.9× usual Pruszków, 6 September: 16.8 µg/m³, 1.6× usual Pruszków, 7 September: 15.4 µg/m³, 1.5× usual Pruszków, 8 September: 12.3 µg/m³, 1.2× usual Kielce Kielce, 1 September: 13.1 µg/m³, 1.4× usual Kielce, 2 September: 17.1 µg/m³, 1.8× usual Kielce, 3 September: 22.3 µg/m³, 2.3× usual Kielce, 4 September: 27.0 µg/m³, 2.8× usual Kielce, 5 September: 20.4 µg/m³, 2.1× usual Kielce, 6 September: 19.7 µg/m³, 2.1× usual Kielce, 7 September: 15.5 µg/m³, 1.6× usual Kielce, 8 September: 15.8 µg/m³, 1.7× usual Konstancin-Jeziorna Konstancin-Jeziorna, 1 September: 8.0 µg/m³, 1.0× usual Konstancin-Jeziorna, 2 September: 12.4 µg/m³, 1.5× usual Konstancin-Jeziorna, 3 September: 20.1 µg/m³, 2.5× usual Konstancin-Jeziorna, 4 September: 26.6 µg/m³, 3.2× usual Konstancin-Jeziorna, 5 September: 18.2 µg/m³, 2.2× usual Konstancin-Jeziorna, 6 September: 16.2 µg/m³, 2.0× usual Konstancin-Jeziorna, 7 September: 14.5 µg/m³, 1.8× usual Konstancin-Jeziorna, 8 September: 11.4 µg/m³, 1.4× usual Toruń Toruń, 1 September: 10.7 µg/m³, 1.1× usual Toruń, 2 September: 12.7 µg/m³, 1.3× usual Toruń, 3 September: 18.7 µg/m³, 1.9× usual Toruń, 4 September: 26.0 µg/m³, 2.7× usual Toruń, 5 September: 28.2 µg/m³, 2.9× usual Toruń, 6 September: 23.2 µg/m³, 2.4× usual Toruń, 7 September: no reading Toruń, 8 September: no reading Warsaw Warsaw, 1 September: 6.2 µg/m³, 0.6× usual Warsaw, 2 September: 13.3 µg/m³, 1.4× usual Warsaw, 3 September: 19.8 µg/m³, 2.0× usual Warsaw, 4 September: 25.7 µg/m³, 2.6× usual Warsaw, 5 September: 19.2 µg/m³, 2.0× usual Warsaw, 6 September: 15.5 µg/m³, 1.6× usual Warsaw, 7 September: 14.7 µg/m³, 1.5× usual Warsaw, 8 September: 10.9 µg/m³, 1.1× usual Legionowo Legionowo, 1 September: 7.5 µg/m³, 0.9× usual Legionowo, 2 September: 11.3 µg/m³, 1.3× usual Legionowo, 3 September: 20.3 µg/m³, 2.4× usual Legionowo, 4 September: 25.5 µg/m³, 3.0× usual Legionowo, 5 September: 19.7 µg/m³, 2.3× usual Legionowo, 6 September: 18.3 µg/m³, 2.1× usual Legionowo, 7 September: 16.4 µg/m³, 1.9× usual Legionowo, 8 September: 12.5 µg/m³, 1.5× usual Debrecen Debrecen, 1 September: 23.9 µg/m³, 2.3× usual Debrecen, 2 September: 23.2 µg/m³, 2.3× usual Debrecen, 3 September: 20.8 µg/m³, 2.0× usual Debrecen, 4 September: 25.3 µg/m³, 2.5× usual Debrecen, 5 September: 13.9 µg/m³, 1.3× usual Debrecen, 6 September: no reading Debrecen, 7 September: 14.0 µg/m³, 1.4× usual Debrecen, 8 September: 13.2 µg/m³, 1.3× usual Gdynia Gdynia, 1 September: 10.2 µg/m³, 1.1× usual Gdynia, 2 September: 8.5 µg/m³, 0.9× usual Gdynia, 3 September: 14.4 µg/m³, 1.5× usual Gdynia, 4 September: 25.0 µg/m³, 2.7× usual Gdynia, 5 September: 20.4 µg/m³, 2.2× usual Gdynia, 6 September: 20.9 µg/m³, 2.2× usual Gdynia, 7 September: 23.1 µg/m³, 2.5× usual Gdynia, 8 September: 17.8 µg/m³, 1.9× usual Łask Łask, 1 September: 7.5 µg/m³, 0.7× usual Łask, 2 September: 13.2 µg/m³, 1.2× usual Łask, 3 September: 18.9 µg/m³, 1.8× usual Łask, 4 September: 25.0 µg/m³, 2.3× usual Łask, 5 September: 20.5 µg/m³, 1.9× usual Łask, 6 September: 17.0 µg/m³, 1.6× usual Łask, 7 September: 14.1 µg/m³, 1.3× usual Łask, 8 September: 15.8 µg/m³, 1.5× usual Zamość Zamość, 1 September: 1.7 µg/m³, 0.2× usual Zamość, 2 September: no reading Zamość, 3 September: 19.3 µg/m³, 1.9× usual Zamość, 4 September: 19.0 µg/m³, 1.8× usual Zamość, 5 September: 34.4 µg/m³, 3.3× usual Zamość, 6 September: 27.0 µg/m³, 2.6× usual Zamość, 7 September: 15.2 µg/m³, 1.5× usual Zamość, 8 September: 11.0 µg/m³, 1.1× usual Zielona Góra Zielona Góra, 1 September: 10.4 µg/m³, 1.5× usual Zielona Góra, 2 September: 15.2 µg/m³, 2.1× usual Zielona Góra, 3 September: 24.3 µg/m³, 3.4× usual Zielona Góra, 4 September: 24.0 µg/m³, 3.4× usual Zielona Góra, 5 September: 33.6 µg/m³, 4.7× usual Zielona Góra, 6 September: 25.6 µg/m³, 3.6× usual Zielona Góra, 7 September: 23.9 µg/m³, 3.4× usual Zielona Góra, 8 September: 20.9 µg/m³, 2.9× usual Gorzów Wielkopolski Gorzów Wielkopolski, 1 September: 8.3 µg/m³, 1.2× usual Gorzów Wielkopolski, 2 September: 9.6 µg/m³, 1.4× usual Gorzów Wielkopolski, 3 September: 18.4 µg/m³, 2.6× usual Gorzów Wielkopolski, 4 September: 20.7 µg/m³, 3.0× usual Gorzów Wielkopolski, 5 September: 27.8 µg/m³, 4.0× usual Gorzów Wielkopolski, 6 September: 23.4 µg/m³, 3.3× usual Gorzów Wielkopolski, 7 September: 17.8 µg/m³, 2.5× usual Gorzów Wielkopolski, 8 September: 19.0 µg/m³, 2.7× usual Szczecin Szczecin, 1 September: 14.2 µg/m³, 1.8× usual Szczecin, 2 September: 11.0 µg/m³, 1.4× usual Szczecin, 3 September: 19.0 µg/m³, 2.4× usual Szczecin, 4 September: 23.6 µg/m³, 3.0× usual Szczecin, 5 September: 27.6 µg/m³, 3.5× usual Szczecin, 6 September: 23.6 µg/m³, 3.0× usual Szczecin, 7 September: 22.0 µg/m³, 2.8× usual Szczecin, 8 September: 20.2 µg/m³, 2.6× usual Poznań Poznań, 1 September: 8.9 µg/m³, 1.0× usual Poznań, 2 September: 13.9 µg/m³, 1.6× usual Poznań, 3 September: 18.4 µg/m³, 2.2× usual Poznań, 4 September: 23.9 µg/m³, 2.8× usual Poznań, 5 September: 27.4 µg/m³, 3.2× usual Poznań, 6 September: 20.3 µg/m³, 2.4× usual Poznań, 7 September: 18.5 µg/m³, 2.2× usual Poznań, 8 September: 18.0 µg/m³, 2.1× usual 1 Sep 2 3 4 5 6 7 8 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
Miskolc Borsod-Abaúj-Zemplén, Hungary 1 4 September 13.2 5.5× Zielona Góra Lubusz, Poland 1 5 September 7.1 4.7× Starachowice Świętokrzyskie, Poland 2 4 September 9.1 4.3× Gorzów Wielkopolski Lubusz, Poland 1 5 September 7.0 4.0× Elbląg Warmia-Masuria, Poland 1 4 September 7.6 3.7× Szczecin West Pomerania, Poland 1 5 September 7.9 3.5× Zamość Lublin, Poland 1 5 September 10.3 3.3× Konstancin-Jeziorna Mazovia, Poland 1 4 September 8.2 3.2× Poznań Greater Poland, Poland 1 5 September 8.5 3.2× Mielec Subcarpathia, Poland 1 4 September 9.0 3.0× Przemyśl Subcarpathia, Poland 2 5 September 9.5 3.0× Legionowo Mazovia, Poland 1 4 September 8.6 3.0× Toruń Kujawsko-Pomorskie, Poland 2 5 September 9.7 2.9× Kielce Świętokrzyskie, Poland 1 4 September 9.5 2.8× Gdynia Pomerania, Poland 1 4 September 9.3 2.7× Pruszków Mazovia, Poland 1 4 September 10.2 2.7× Warsaw Mazovia, Poland 1 4 September 9.8 2.6× Lublin Lublin, Poland 1 3 September 9.9 2.6× Kutno Łódź Voivodeship, Poland 1 4 September 11.1 2.6× Debrecen Hajdú-Bihar, Hungary 1 4 September 10.3 2.5× Łask Łódź Voivodeship, Poland 1 4 September 10.7 2.3× Zemun Central Serbia, Serbia 1 4 September 13.7 2.0×
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 19 of 33 episodes in Poland and Hungary since our records began, by cities reached.
Eastern Europe, October and November 2024 141 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, November and December 2024 53 Eastern Europe, September 2023 53 Poland, September 2024 51 Poland and Hungary, September 2024 22 Bars: cities reached; colour: the level of the episode's highest daily reading. All 33 .
Use this page SmogRank, Poland and Hungary, September 2024: 22 cities with PM2.5 at twice their usual or more, 4 to 5 September 2024, smogrank.com/episodes/2024-09-poland-and-hungary (accessed 3 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.
