SmogRank / Episodes / Poland
Poland, September 2024
For 4 days, from 20 to 23 September 2024, 32 cities in Poland and Hungary had PM2.5 at least twice their usual for the time of year. The worst reading was Kalisz, Greater Poland, Poland: 41.6 µg/m³ on 22 September, about 3.2× its usual 13.1.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 32 in 2 countries
Days 4 20 to 23 September 2024
Worst day 21 September 24 cities counted
Furthest above usual 4.0× Racibórz
Day by day
Play 21 September 24 cities at twice their usual or more
Strzelce Opolskie Łódź Kędzierzyn-Koźle Opole Czechowice-Dziedzice Jastrzębie Zdrój Bielsko-Biala Żywiec Płock Wrocław Skarżysko-Kamienna Toruń Tarnów Świecie Warsaw Legionowo Konstancin-Jeziorna Działdowo Wawer Dębica Pułtusk Náchod Jasło Krosno Elbląg Jelenia Góra Kościerzyna Rzeszów Nisko Gdańsk Bytów Miskolc Zielona Góra Żary Nyíregyháza Ełk Kołobrzeg Białystok Suwałki Otwock Radom Grajewo Katowice Pruszków Kraków Debrecen Kutno Żyrardów Racibórz Augustów Zgierz Gdynia Łask Włocławek Łuków Zamość Przemyśl Lublin Radomsko Kielce Bydgoszcz Kalisz Jarosław Mielec Kłodzko Poznań Kościan Starachowice Olsztyn Szczecin Gorzów Wielkopolski 17 Sep 18 19 20 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
Łuków Łuków, 17 September: 44.6 µg/m³, 3.3× usual Łuków, 18 September: 22.5 µg/m³, 1.6× usual Łuków, 19 September: 24.9 µg/m³, 1.8× usual Łuków, 20 September: 37.8 µg/m³, 2.8× usual Łuków, 21 September: 32.8 µg/m³, 2.4× usual Łuków, 22 September: 17.9 µg/m³, 1.3× usual Łuków, 23 September: 19.5 µg/m³, 1.4× usual Łuków, 24 September: 19.1 µg/m³, 1.4× usual Łuków, 25 September: 16.3 µg/m³, 1.2× usual Łuków, 26 September: 12.6 µg/m³, 0.9× usual Pruszków Pruszków, 17 September: 35.3 µg/m³, 3.1× usual Pruszków, 18 September: 30.3 µg/m³, 2.6× usual Pruszków, 19 September: 19.3 µg/m³, 1.7× usual Pruszków, 20 September: 22.7 µg/m³, 2.0× usual Pruszków, 21 September: 27.3 µg/m³, 2.4× usual Pruszków, 22 September: 23.2 µg/m³, 2.0× usual Pruszków, 23 September: 22.5 µg/m³, 2.0× usual Pruszków, 24 September: 18.4 µg/m³, 1.6× usual Pruszków, 25 September: 13.4 µg/m³, 1.2× usual Pruszków, 26 September: 11.9 µg/m³, 1.0× usual Szczecin Szczecin, 17 September: 34.4 µg/m³, 4.2× usual Szczecin, 18 September: 33.3 µg/m³, 4.1× usual Szczecin, 19 September: 25.5 µg/m³, 3.1× usual Szczecin, 20 September: 30.3 µg/m³, 3.7× usual Szczecin, 21 September: 26.0 µg/m³, 3.2× usual Szczecin, 22 September: 27.0 µg/m³, 3.3× usual Szczecin, 23 September: 27.1 µg/m³, 3.3× usual Szczecin, 24 September: 23.5 µg/m³, 2.9× usual Szczecin, 25 September: 8.2 µg/m³, 1.0× usual Szczecin, 26 September: 6.5 µg/m³, 0.8× usual Kalisz Kalisz, 17 September: 34.0 µg/m³, 2.6× usual Kalisz, 18 September: 29.7 µg/m³, 2.3× usual Kalisz, 19 September: 21.5 µg/m³, 1.6× usual Kalisz, 20 September: 25.5 µg/m³, 1.9× usual Kalisz, 21 September: 39.1 µg/m³, 3.0× usual Kalisz, 22 September: 41.6 µg/m³, 3.2× usual Kalisz, 23 September: 26.3 µg/m³, 2.0× usual Kalisz, 24 September: 18.1 µg/m³, 1.4× usual Kalisz, 25 September: 8.7 µg/m³, 0.7× usual Kalisz, 26 September: 9.6 µg/m³, 0.7× usual Zgierz Zgierz, 17 September: 34.0 µg/m³, 3.2× usual Zgierz, 18 September: 28.6 µg/m³, 2.7× usual Zgierz, 19 September: 20.8 µg/m³, 1.9× usual Zgierz, 20 September: 22.7 µg/m³, 2.1× usual Zgierz, 21 September: 28.9 µg/m³, 2.7× usual Zgierz, 22 September: 23.5 µg/m³, 2.2× usual Zgierz, 23 September: 18.3 µg/m³, 1.7× usual Zgierz, 24 September: 16.1 µg/m³, 1.5× usual Zgierz, 25 September: 8.7 µg/m³, 0.8× usual Zgierz, 26 September: 8.7 µg/m³, 0.8× usual Poznań Poznań, 17 September: 33.2 µg/m³, 3.5× usual Poznań, 18 September: 29.6 µg/m³, 3.1× usual Poznań, 19 September: 23.2 µg/m³, 2.4× usual Poznań, 20 September: 26.3 µg/m³, 2.8× usual Poznań, 21 September: 27.6 µg/m³, 2.9× usual Poznań, 22 September: 30.1 µg/m³, 3.2× usual Poznań, 23 September: 22.3 µg/m³, 2.3× usual Poznań, 24 September: 20.9 µg/m³, 2.2× usual Poznań, 25 September: 7.9 µg/m³, 0.8× usual Poznań, 26 September: 8.7 µg/m³, 0.9× usual Włocławek Włocławek, 17 September: 32.5 µg/m³, 3.1× usual Włocławek, 18 September: 25.1 µg/m³, 2.4× usual Włocławek, 19 September: 21.7 µg/m³, 2.1× usual Włocławek, 20 September: 25.6 µg/m³, 2.4× usual Włocławek, 21 September: 26.1 µg/m³, 2.5× usual Włocławek, 22 September: 29.2 µg/m³, 2.8× usual Włocławek, 23 September: 24.3 µg/m³, 2.3× usual Włocławek, 24 September: 18.3 µg/m³, 1.7× usual Włocławek, 25 September: 9.3 µg/m³, 0.9× usual Włocławek, 26 September: 9.3 µg/m³, 0.9× usual Mielec Mielec, 17 September: 32.2 µg/m³, 3.2× usual Mielec, 18 September: 35.1 µg/m³, 3.4× usual Mielec, 19 September: 20.0 µg/m³, 2.0× usual Mielec, 20 September: 15.5 µg/m³, 1.5× usual Mielec, 21 September: 32.3 µg/m³, 3.2× usual Mielec, 22 September: 28.2 µg/m³, 2.8× usual Mielec, 23 September: 15.0 µg/m³, 1.5× usual Mielec, 24 September: 13.5 µg/m³, 1.3× usual Mielec, 25 September: 12.0 µg/m³, 1.2× usual Mielec, 26 September: 8.0 µg/m³, 0.8× usual Kutno Kutno, 17 September: 31.5 µg/m³, 2.7× usual Kutno, 18 September: 21.5 µg/m³, 1.9× usual Kutno, 19 September: 20.3 µg/m³, 1.8× usual Kutno, 20 September: 24.4 µg/m³, 2.1× usual Kutno, 21 September: 29.4 µg/m³, 2.5× usual Kutno, 22 September: 29.4 µg/m³, 2.5× usual Kutno, 23 September: 21.8 µg/m³, 1.9× usual Kutno, 24 September: 16.3 µg/m³, 1.4× usual Kutno, 25 September: 10.1 µg/m³, 0.9× usual Kutno, 26 September: 8.8 µg/m³, 0.8× usual Lublin Lublin, 17 September: 31.3 µg/m³, 2.7× usual Lublin, 18 September: 30.6 µg/m³, 2.7× usual Lublin, 19 September: 26.8 µg/m³, 2.4× usual Lublin, 20 September: 29.4 µg/m³, 2.6× usual Lublin, 21 September: 33.2 µg/m³, 2.9× usual Lublin, 22 September: 27.5 µg/m³, 2.4× usual Lublin, 23 September: 20.2 µg/m³, 1.8× usual Lublin, 24 September: 18.5 µg/m³, 1.6× usual Lublin, 25 September: 14.9 µg/m³, 1.3× usual Lublin, 26 September: 11.4 µg/m³, 1.0× usual Żyrardów Żyrardów, 17 September: 31.3 µg/m³, 2.9× usual Żyrardów, 18 September: 26.4 µg/m³, 2.4× usual Żyrardów, 19 September: 20.5 µg/m³, 1.9× usual Żyrardów, 20 September: 23.7 µg/m³, 2.2× usual Żyrardów, 21 September: 27.5 µg/m³, 2.5× usual Żyrardów, 22 September: 23.3 µg/m³, 2.2× usual Żyrardów, 23 September: 17.3 µg/m³, 1.6× usual Żyrardów, 24 September: 12.2 µg/m³, 1.1× usual Żyrardów, 25 September: 10.4 µg/m³, 1.0× usual Żyrardów, 26 September: 7.9 µg/m³, 0.7× usual Bydgoszcz Bydgoszcz, 17 September: 31.2 µg/m³, 3.8× usual Bydgoszcz, 18 September: 29.0 µg/m³, 3.5× usual Bydgoszcz, 19 September: 20.9 µg/m³, 2.5× usual Bydgoszcz, 20 September: 20.8 µg/m³, 2.5× usual Bydgoszcz, 21 September: 26.3 µg/m³, 3.2× usual Bydgoszcz, 22 September: 25.1 µg/m³, 3.0× usual Bydgoszcz, 23 September: 26.0 µg/m³, 3.1× usual Bydgoszcz, 24 September: 21.1 µg/m³, 2.5× usual Bydgoszcz, 25 September: 8.1 µg/m³, 1.0× usual Bydgoszcz, 26 September: 9.2 µg/m³, 1.1× usual Starachowice Starachowice, 17 September: 31.1 µg/m³, 2.9× usual Starachowice, 18 September: 42.6 µg/m³, 4.0× usual Starachowice, 19 September: 21.3 µg/m³, 2.0× usual Starachowice, 20 September: 30.0 µg/m³, 2.8× usual Starachowice, 21 September: 34.7 µg/m³, 3.3× usual Starachowice, 22 September: 26.4 µg/m³, 2.5× usual Starachowice, 23 September: 23.7 µg/m³, 2.2× usual Starachowice, 24 September: 17.6 µg/m³, 1.7× usual Starachowice, 25 September: 13.7 µg/m³, 1.3× usual Starachowice, 26 September: 9.1 µg/m³, 0.9× usual Kościan Kościan, 17 September: 30.7 µg/m³, 3.0× usual Kościan, 18 September: 29.5 µg/m³, 2.9× usual Kościan, 19 September: 19.7 µg/m³, 1.9× usual Kościan, 20 September: 22.8 µg/m³, 2.2× usual Kościan, 21 September: 33.8 µg/m³, 3.3× usual Kościan, 22 September: 28.8 µg/m³, 2.8× usual Kościan, 23 September: 17.3 µg/m³, 1.7× usual Kościan, 24 September: 16.9 µg/m³, 1.6× usual Kościan, 25 September: 5.5 µg/m³, 0.5× usual Kościan, 26 September: 5.4 µg/m³, 0.5× usual Olsztyn Olsztyn, 17 September: 30.1 µg/m³, 4.0× usual Olsztyn, 18 September: 27.6 µg/m³, 3.7× usual Olsztyn, 19 September: 21.0 µg/m³, 2.8× usual Olsztyn, 20 September: 20.4 µg/m³, 2.7× usual Olsztyn, 21 September: 21.3 µg/m³, 2.8× usual Olsztyn, 22 September: 21.6 µg/m³, 2.9× usual Olsztyn, 23 September: 25.6 µg/m³, 3.4× usual Olsztyn, 24 September: 19.8 µg/m³, 2.6× usual Olsztyn, 25 September: 10.1 µg/m³, 1.3× usual Olsztyn, 26 September: 10.6 µg/m³, 1.4× usual Kielce Kielce, 17 September: 30.1 µg/m³, 2.8× usual Kielce, 18 September: 34.8 µg/m³, 3.3× usual Kielce, 19 September: 17.9 µg/m³, 1.7× usual Kielce, 20 September: 19.7 µg/m³, 1.8× usual Kielce, 21 September: 32.9 µg/m³, 3.1× usual Kielce, 22 September: 23.0 µg/m³, 2.1× usual Kielce, 23 September: 20.4 µg/m³, 1.9× usual Kielce, 24 September: 16.9 µg/m³, 1.6× usual Kielce, 25 September: 13.8 µg/m³, 1.3× usual Kielce, 26 September: 9.6 µg/m³, 0.9× usual Otwock Otwock, 17 September: 29.9 µg/m³, 2.3× usual Otwock, 18 September: 21.5 µg/m³, 1.6× usual Otwock, 19 September: 18.6 µg/m³, 1.4× usual Otwock, 20 September: 20.8 µg/m³, 1.6× usual Otwock, 21 September: 28.9 µg/m³, 2.2× usual Otwock, 22 September: 27.0 µg/m³, 2.1× usual Otwock, 23 September: 22.7 µg/m³, 1.7× usual Otwock, 24 September: 17.6 µg/m³, 1.3× usual Otwock, 25 September: 11.6 µg/m³, 0.9× usual Otwock, 26 September: 13.6 µg/m³, 1.0× usual Łask Łask, 17 September: 29.3 µg/m³, 2.3× usual Łask, 18 September: 28.6 µg/m³, 2.3× usual Łask, 19 September: 23.0 µg/m³, 1.8× usual Łask, 20 September: 24.2 µg/m³, 1.9× usual Łask, 21 September: 35.8 µg/m³, 2.8× usual Łask, 22 September: 33.6 µg/m³, 2.6× usual Łask, 23 September: 21.3 µg/m³, 1.7× usual Łask, 24 September: 15.7 µg/m³, 1.2× usual Łask, 25 September: 9.7 µg/m³, 0.8× usual Łask, 26 September: 7.5 µg/m³, 0.6× usual Zamość Zamość, 17 September: 28.1 µg/m³, 2.6× usual Zamość, 18 September: 25.8 µg/m³, 2.3× usual Zamość, 19 September: 21.5 µg/m³, 2.0× usual Zamość, 20 September: 30.9 µg/m³, 2.8× usual Zamość, 21 September: 27.7 µg/m³, 2.5× usual Zamość, 22 September: 18.7 µg/m³, 1.7× usual Zamość, 23 September: 17.9 µg/m³, 1.6× usual Zamość, 24 September: 16.7 µg/m³, 1.5× usual Zamość, 25 September: 12.2 µg/m³, 1.1× usual Zamość, 26 September: 8.6 µg/m³, 0.8× usual Katowice Katowice, 17 September: 27.9 µg/m³, 2.3× usual Katowice, 18 September: 33.2 µg/m³, 2.8× usual Katowice, 19 September: 22.1 µg/m³, 1.8× usual Katowice, 20 September: 18.4 µg/m³, 1.5× usual Katowice, 21 September: 22.0 µg/m³, 1.8× usual Katowice, 22 September: 28.7 µg/m³, 2.4× usual Katowice, 23 September: 22.4 µg/m³, 1.9× usual Katowice, 24 September: 19.4 µg/m³, 1.6× usual Katowice, 25 September: 11.7 µg/m³, 1.0× usual Katowice, 26 September: 10.2 µg/m³, 0.9× usual Gdynia Gdynia, 17 September: 27.8 µg/m³, 3.1× usual Gdynia, 18 September: 21.1 µg/m³, 2.3× usual Gdynia, 19 September: 20.2 µg/m³, 2.2× usual Gdynia, 20 September: 23.2 µg/m³, 2.5× usual Gdynia, 21 September: 20.2 µg/m³, 2.2× usual Gdynia, 22 September: 21.5 µg/m³, 2.4× usual Gdynia, 23 September: 25.3 µg/m³, 2.8× usual Gdynia, 24 September: 24.5 µg/m³, 2.7× usual Gdynia, 25 September: 11.1 µg/m³, 1.2× usual Gdynia, 26 September: 12.8 µg/m³, 1.4× usual Radomsko Radomsko, 17 September: 26.0 µg/m³, 2.2× usual Radomsko, 18 September: 26.2 µg/m³, 2.2× usual Radomsko, 19 September: 17.5 µg/m³, 1.5× usual Radomsko, 20 September: 21.5 µg/m³, 1.8× usual Radomsko, 21 September: 32.5 µg/m³, 2.8× usual Radomsko, 22 September: 35.1 µg/m³, 3.0× usual Radomsko, 23 September: 16.2 µg/m³, 1.4× usual Radomsko, 24 September: 16.1 µg/m³, 1.4× usual Radomsko, 25 September: 8.0 µg/m³, 0.7× usual Radomsko, 26 September: 9.8 µg/m³, 0.8× usual Gorzów Wielkopolski Gorzów Wielkopolski, 17 September: 25.8 µg/m³, 3.7× usual Gorzów Wielkopolski, 18 September: 27.9 µg/m³, 4.0× usual Gorzów Wielkopolski, 19 September: 25.4 µg/m³, 3.7× usual Gorzów Wielkopolski, 20 September: 27.5 µg/m³, 4.0× usual Gorzów Wielkopolski, 21 September: 25.9 µg/m³, 3.8× usual Gorzów Wielkopolski, 22 September: 24.9 µg/m³, 3.6× usual Gorzów Wielkopolski, 23 September: 21.8 µg/m³, 3.2× usual Gorzów Wielkopolski, 24 September: 19.0 µg/m³, 2.8× usual Gorzów Wielkopolski, 25 September: 6.4 µg/m³, 0.9× usual Gorzów Wielkopolski, 26 September: 5.9 µg/m³, 0.9× usual Kraków Kraków, 17 September: 25.0 µg/m³, 2.3× usual Kraków, 18 September: 25.3 µg/m³, 2.3× usual Kraków, 19 September: 18.1 µg/m³, 1.7× usual Kraków, 20 September: 17.0 µg/m³, 1.6× usual Kraków, 21 September: 20.4 µg/m³, 1.9× usual Kraków, 22 September: 27.6 µg/m³, 2.5× usual Kraków, 23 September: 17.3 µg/m³, 1.6× usual Kraków, 24 September: 18.4 µg/m³, 1.7× usual Kraków, 25 September: 14.4 µg/m³, 1.3× usual Kraków, 26 September: 9.1 µg/m³, 0.8× usual Racibórz Racibórz, 17 September: 24.6 µg/m³, 2.6× usual Racibórz, 18 September: 41.5 µg/m³, 4.5× usual Racibórz, 19 September: 23.5 µg/m³, 2.5× usual Racibórz, 20 September: 21.6 µg/m³, 2.3× usual Racibórz, 21 September: 21.5 µg/m³, 2.3× usual Racibórz, 22 September: 25.1 µg/m³, 2.7× usual Racibórz, 23 September: 22.0 µg/m³, 2.4× usual Racibórz, 24 September: 19.0 µg/m³, 2.0× usual Racibórz, 25 September: 8.1 µg/m³, 0.9× usual Racibórz, 26 September: 11.2 µg/m³, 1.2× usual Kłodzko Kłodzko, 17 September: 19.3 µg/m³, 2.2× usual Kłodzko, 18 September: 26.8 µg/m³, 3.1× usual Kłodzko, 19 September: 18.7 µg/m³, 2.1× usual Kłodzko, 20 September: 27.6 µg/m³, 3.2× usual Kłodzko, 21 September: 22.1 µg/m³, 2.5× usual Kłodzko, 22 September: 21.7 µg/m³, 2.5× usual Kłodzko, 23 September: 26.7 µg/m³, 3.1× usual Kłodzko, 24 September: 14.9 µg/m³, 1.7× usual Kłodzko, 25 September: 4.5 µg/m³, 0.5× usual Kłodzko, 26 September: 6.3 µg/m³, 0.7× usual Grajewo Grajewo, 17 September: 23.8 µg/m³, 2.0× usual Grajewo, 18 September: 26.8 µg/m³, 2.3× usual Grajewo, 19 September: 20.1 µg/m³, 1.7× usual Grajewo, 20 September: 21.3 µg/m³, 1.8× usual Grajewo, 21 September: 27.1 µg/m³, 2.3× usual Grajewo, 22 September: 20.7 µg/m³, 1.8× usual Grajewo, 23 September: 18.9 µg/m³, 1.6× usual Grajewo, 24 September: 20.3 µg/m³, 1.7× usual Grajewo, 25 September: 18.4 µg/m³, 1.6× usual Grajewo, 26 September: 17.9 µg/m³, 1.5× usual Radom Radom, 17 September: 23.5 µg/m³, 1.9× usual Radom, 18 September: 26.4 µg/m³, 2.1× usual Radom, 19 September: 19.6 µg/m³, 1.6× usual Radom, 20 September: 24.5 µg/m³, 2.0× usual Radom, 21 September: 26.3 µg/m³, 2.1× usual Radom, 22 September: 27.1 µg/m³, 2.2× usual Radom, 23 September: 18.1 µg/m³, 1.5× usual Radom, 24 September: 16.3 µg/m³, 1.3× usual Radom, 25 September: 12.7 µg/m³, 1.0× usual Radom, 26 September: 12.0 µg/m³, 1.0× usual Jarosław Jarosław, 17 September: 17.9 µg/m³, 2.1× usual Jarosław, 18 September: 16.6 µg/m³, 2.0× usual Jarosław, 19 September: 14.2 µg/m³, 1.7× usual Jarosław, 20 September: 16.3 µg/m³, 1.9× usual Jarosław, 21 September: 27.4 µg/m³, 3.2× usual Jarosław, 22 September: 23.4 µg/m³, 2.8× usual Jarosław, 23 September: 16.4 µg/m³, 1.9× usual Jarosław, 24 September: 14.4 µg/m³, 1.7× usual Jarosław, 25 September: 11.7 µg/m³, 1.4× usual Jarosław, 26 September: 7.1 µg/m³, 0.8× usual Przemyśl Przemyśl, 17 September: 21.5 µg/m³, 2.3× usual Przemyśl, 18 September: 16.0 µg/m³, 1.7× usual Przemyśl, 19 September: 17.0 µg/m³, 1.8× usual Przemyśl, 20 September: 17.1 µg/m³, 1.8× usual Przemyśl, 21 September: 27.2 µg/m³, 2.9× usual Przemyśl, 22 September: 20.1 µg/m³, 2.1× usual Przemyśl, 23 September: 14.4 µg/m³, 1.5× usual Przemyśl, 24 September: 16.9 µg/m³, 1.8× usual Przemyśl, 25 September: 12.6 µg/m³, 1.3× usual Przemyśl, 26 September: 8.6 µg/m³, 0.9× usual Debrecen Debrecen, 17 September: 17.4 µg/m³, 1.5× usual Debrecen, 18 September: 21.3 µg/m³, 1.9× usual Debrecen, 19 September: 14.5 µg/m³, 1.3× usual Debrecen, 20 September: 10.0 µg/m³, 0.9× usual Debrecen, 21 September: 23.5 µg/m³, 2.1× usual Debrecen, 22 September: 28.2 µg/m³, 2.5× usual Debrecen, 23 September: 27.4 µg/m³, 2.4× usual Debrecen, 24 September: 20.6 µg/m³, 1.8× usual Debrecen, 25 September: 18.2 µg/m³, 1.6× usual Debrecen, 26 September: 17.1 µg/m³, 1.5× usual Augustów Augustów, 17 September: 19.8 µg/m³, 2.1× usual Augustów, 18 September: 21.1 µg/m³, 2.2× usual Augustów, 19 September: 17.2 µg/m³, 1.8× usual Augustów, 20 September: 17.1 µg/m³, 1.8× usual Augustów, 21 September: 19.0 µg/m³, 2.0× usual Augustów, 22 September: 25.7 µg/m³, 2.7× usual Augustów, 23 September: 15.0 µg/m³, 1.6× usual Augustów, 24 September: 17.9 µg/m³, 1.9× usual Augustów, 25 September: 13.4 µg/m³, 1.4× usual Augustów, 26 September: 13.3 µg/m³, 1.4× usual 17 Sep 18 19 20 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
Racibórz Silesia, Poland 1 18 September 9.3 4.5× Szczecin West Pomerania, Poland 4 17 September 8.1 4.2× Gorzów Wielkopolski Lubusz, Poland 2 18 September 6.9 4.0× Starachowice Świętokrzyskie, Poland 3 18 September 10.6 4.0× Olsztyn Warmia-Masuria, Poland 1 17 September 7.5 4.0× Bydgoszcz Kujawsko-Pomorskie, Poland 3 17 September 8.3 3.8× Poznań Greater Poland, Poland 3 17 September 9.5 3.5× Mielec Subcarpathia, Poland 2 18 September 10.2 3.4× Kościan Greater Poland, Poland 2 21 September 10.3 3.3× Łuków Lublin, Poland 2 17 September 13.7 3.3× Kielce Świętokrzyskie, Poland 1 18 September 10.7 3.3× Jarosław Subcarpathia, Poland 1 21 September 8.5 3.2× Zgierz Łódź Voivodeship, Poland 1 17 September 10.7 3.2× Kalisz Greater Poland, Poland 3 22 September 13.1 3.2× Kłodzko Lower Silesia, Poland 2 20 September 8.7 3.2× Włocławek Kujawsko-Pomorskie, Poland 3 17 September 10.5 3.1× Pruszków Mazovia, Poland 1 17 September 11.5 3.1× Gdynia Pomerania, Poland 1 17 September 9.1 3.1× Radomsko Łódź Voivodeship, Poland 2 22 September 11.8 3.0× Lublin Lublin, Poland 3 21 September 11.4 2.9× Żyrardów Mazovia, Poland 1 17 September 10.8 2.9× Przemyśl Subcarpathia, Poland 1 21 September 9.5 2.9× Łask Łódź Voivodeship, Poland 2 21 September 12.7 2.8× Zamość Lublin, Poland 2 20 September 11.0 2.8× Katowice Silesia, Poland 1 18 September 12.0 2.8× Kutno Łódź Voivodeship, Poland 2 17 September 11.6 2.7× Augustów Podlasie, Poland 1 22 September 9.5 2.7× Kraków Lesser Poland, Poland 1 22 September 10.9 2.5× Debrecen Hajdú-Bihar, Hungary 1 22 September 11.3 2.5× Grajewo Podlasie, Poland 1 21 September 11.8 2.3× Otwock Mazovia, Poland 2 17 September 13.1 2.3× Radom Mazovia, Poland 2 22 September 12.3 2.2×
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 16 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, September 2024 32 Bars: cities reached; colour: the level of the episode's highest daily reading. All 33 .
Use this page SmogRank, Poland, September 2024: 32 cities with PM2.5 at twice their usual or more, 20 to 23 September 2024, smogrank.com/episodes/2024-09-poland-2 (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.
