SmogRank / Episodes / Poland
Poland, 20 to 21 March 2024
For 2 days, from 20 to 21 March 2024, 40 cities in Poland had PM2.5 at least twice their usual for the time of year. The worst reading was Łask, Łódź Voivodeship, Poland: 65.9 µg/m³ on 20 March, about 2.1× its usual 30.7.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 40 in 1 country
Days 2 20 to 21 March 2024
Worst day 21 March 31 cities counted
Furthest above usual 2.9× Dębica
Day by day
Play 21 March 31 cities at twice their usual or more
Łódź Toruń Kalisz Strzelce Opolskie Pruszków Legionowo Warsaw Wrocław Kielce Konstancin-Jeziorna Jastrzębie Zdrój Skarżysko-Kamienna Pułtusk Wawer Otwock Radom Starachowice Żywiec Kłodzko Tarnów Mielec Náchod Jelenia Góra Jasło Gorzów Wielkopolski Krosno Żary Kołobrzeg Jarosław Białystok Szczecin Kościan Ełk Gdańsk Świecie Płock Nisko Rzeszów Bielsko-Biala Czechowice-Dziedzice Włocławek Łask Radomsko Zgierz Działdowo Gdynia Kościerzyna Kędzierzyn-Koźle Augustów Zamość Katowice Kraków Bytów Przemyśl Siedlce Poznań Bydgoszcz Opole Zielona Góra Suwałki Olsztyn Elbląg Żyrardów Lębork Kutno Łuków Racibórz Grajewo Lublin Dębica 17 Mar 18 19 20 21 22 23 24 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
Łask Łask, 17 March: 10.2 µg/m³ Łask, 18 March: 10.8 µg/m³ Łask, 19 March: 37.1 µg/m³ Łask, 20 March: 65.9 µg/m³, 2.1× its usual 30.7 Łask, 21 March: 56.5 µg/m³ Łask, 22 March: 20.2 µg/m³ Łask, 23 March: 13.8 µg/m³ Łask, 24 March: 13.5 µg/m³ Kościan Kościan, 17 March: 5.4 µg/m³ Kościan, 18 March: 6.8 µg/m³ Kościan, 19 March: 38.4 µg/m³ Kościan, 20 March: 54.9 µg/m³, 2.0× its usual 27.2 Kościan, 21 March: 42.8 µg/m³ Kościan, 22 March: 21.8 µg/m³ Kościan, 23 March: 16.3 µg/m³ Kościan, 24 March: 13.7 µg/m³ Kutno Kutno, 17 March: 6.6 µg/m³ Kutno, 18 March: 10.5 µg/m³ Kutno, 19 March: 34.3 µg/m³ Kutno, 20 March: 54.6 µg/m³, 2.7× its usual 20.1 Kutno, 21 March: 42.2 µg/m³, 2.1× its usual 19.9 Kutno, 22 March: 21.5 µg/m³ Kutno, 23 March: 20.9 µg/m³ Kutno, 24 March: 16.5 µg/m³ Zgierz Zgierz, 17 March: 15.7 µg/m³ Zgierz, 18 March: 19.9 µg/m³ Zgierz, 19 March: 39.8 µg/m³ Zgierz, 20 March: 51.0 µg/m³, 2.2× its usual 23.6 Zgierz, 21 March: 48.0 µg/m³, 2.1× its usual 23.3 Zgierz, 22 March: 27.2 µg/m³ Zgierz, 23 March: 20.5 µg/m³ Zgierz, 24 March: 20.1 µg/m³ Włocławek Włocławek, 17 March: 6.6 µg/m³ Włocławek, 18 March: 12.1 µg/m³ Włocławek, 19 March: 31.5 µg/m³ Włocławek, 20 March: 50.9 µg/m³, 2.1× its usual 24.8 Włocławek, 21 March: 42.1 µg/m³ Włocławek, 22 March: 26.7 µg/m³ Włocławek, 23 March: 16.6 µg/m³ Włocławek, 24 March: 18.1 µg/m³ Radomsko Radomsko, 17 March: no reading Radomsko, 18 March: no reading Radomsko, 19 March: 43.9 µg/m³ Radomsko, 20 March: 50.5 µg/m³, 2.2× its usual 22.5 Radomsko, 21 March: 25.3 µg/m³ Radomsko, 22 March: 12.2 µg/m³ Radomsko, 23 March: 9.5 µg/m³ Radomsko, 24 March: 10.0 µg/m³ Racibórz Racibórz, 17 March: 8.4 µg/m³ Racibórz, 18 March: 13.0 µg/m³ Racibórz, 19 March: 34.5 µg/m³ Racibórz, 20 March: 49.4 µg/m³, 2.8× its usual 17.6 Racibórz, 21 March: 48.3 µg/m³, 2.7× its usual 17.9 Racibórz, 22 March: 20.6 µg/m³ Racibórz, 23 March: 13.7 µg/m³ Racibórz, 24 March: 9.2 µg/m³ Czechowice-Dziedzice Czechowice-Dziedzice, 17 March: 7.2 µg/m³ Czechowice-Dziedzice, 18 March: 13.1 µg/m³ Czechowice-Dziedzice, 19 March: 28.3 µg/m³ Czechowice-Dziedzice, 20 March: 48.3 µg/m³, 2.1× its usual 22.8 Czechowice-Dziedzice, 21 March: 46.8 µg/m³, 2.1× its usual 22.2 Czechowice-Dziedzice, 22 March: 20.7 µg/m³ Czechowice-Dziedzice, 23 March: 12.3 µg/m³ Czechowice-Dziedzice, 24 March: 7.3 µg/m³ Dębica Dębica, 17 March: 11.8 µg/m³ Dębica, 18 March: 17.7 µg/m³ Dębica, 19 March: 30.2 µg/m³ Dębica, 20 March: 47.4 µg/m³, 2.3× its usual 20.6 Dębica, 21 March: 60.6 µg/m³, 2.9× its usual 20.6 Dębica, 22 March: no reading Dębica, 23 March: no reading Dębica, 24 March: no reading Bielsko-Biala Bielsko-Biala, 17 March: no reading Bielsko-Biala, 18 March: 24.5 µg/m³ Bielsko-Biala, 19 March: 37.2 µg/m³ Bielsko-Biala, 20 March: 47.3 µg/m³, 2.1× its usual 22.7 Bielsko-Biala, 21 March: 40.6 µg/m³ Bielsko-Biala, 22 March: 24.1 µg/m³ Bielsko-Biala, 23 March: 11.8 µg/m³ Bielsko-Biala, 24 March: 11.5 µg/m³ Żyrardów Żyrardów, 17 March: 4.8 µg/m³ Żyrardów, 18 March: 8.5 µg/m³ Żyrardów, 19 March: 30.8 µg/m³ Żyrardów, 20 March: 46.3 µg/m³, 2.6× its usual 18.0 Żyrardów, 21 March: 27.5 µg/m³ Żyrardów, 22 March: 20.5 µg/m³ Żyrardów, 23 March: 12.9 µg/m³ Żyrardów, 24 March: 12.3 µg/m³ Grajewo Grajewo, 17 March: 6.4 µg/m³ Grajewo, 18 March: 18.7 µg/m³ Grajewo, 19 March: 15.4 µg/m³ Grajewo, 20 March: 45.0 µg/m³, 2.6× its usual 17.2 Grajewo, 21 March: 49.3 µg/m³, 2.9× its usual 16.8 Grajewo, 22 March: 22.5 µg/m³ Grajewo, 23 March: 11.1 µg/m³ Grajewo, 24 March: 12.4 µg/m³ Katowice Katowice, 17 March: 9.8 µg/m³ Katowice, 18 March: 15.0 µg/m³ Katowice, 19 March: 26.9 µg/m³ Katowice, 20 March: 44.9 µg/m³, 2.2× its usual 20.3 Katowice, 21 March: 45.8 µg/m³, 2.3× its usual 20.3 Katowice, 22 March: 24.5 µg/m³ Katowice, 23 March: 17.1 µg/m³ Katowice, 24 March: 13.6 µg/m³ Poznań Poznań, 17 March: 5.8 µg/m³ Poznań, 18 March: 8.9 µg/m³ Poznań, 19 March: 23.5 µg/m³ Poznań, 20 March: 44.7 µg/m³, 2.4× its usual 18.5 Poznań, 21 March: 43.8 µg/m³, 2.4× its usual 18.3 Poznań, 22 March: 18.6 µg/m³ Poznań, 23 March: 12.7 µg/m³ Poznań, 24 March: 11.3 µg/m³ Siedlce Siedlce, 17 March: 7.3 µg/m³ Siedlce, 18 March: 19.6 µg/m³ Siedlce, 19 March: 20.7 µg/m³ Siedlce, 20 March: 43.0 µg/m³, 2.3× its usual 18.8 Siedlce, 21 March: 44.2 µg/m³, 2.4× its usual 18.6 Siedlce, 22 March: 25.1 µg/m³ Siedlce, 23 March: 17.1 µg/m³ Siedlce, 24 March: 16.6 µg/m³ Opole Opole, 17 March: 4.6 µg/m³ Opole, 18 March: 5.7 µg/m³ Opole, 19 March: 24.3 µg/m³ Opole, 20 March: 41.2 µg/m³, 2.4× its usual 17.4 Opole, 21 March: 44.6 µg/m³, 2.5× its usual 17.5 Opole, 22 March: 13.6 µg/m³ Opole, 23 March: 10.9 µg/m³ Opole, 24 March: 7.3 µg/m³ Zamość Zamość, 17 March: 10.9 µg/m³ Zamość, 18 March: 13.7 µg/m³ Zamość, 19 March: 19.1 µg/m³ Zamość, 20 March: 41.2 µg/m³, 2.1× its usual 19.3 Zamość, 21 March: 43.8 µg/m³, 2.3× its usual 19.1 Zamość, 22 March: 26.3 µg/m³ Zamość, 23 March: 19.0 µg/m³ Zamość, 24 March: 14.1 µg/m³ Bydgoszcz Bydgoszcz, 17 March: 4.7 µg/m³ Bydgoszcz, 18 March: 6.2 µg/m³ Bydgoszcz, 19 March: 17.4 µg/m³ Bydgoszcz, 20 March: 40.0 µg/m³, 2.3× its usual 17.6 Bydgoszcz, 21 March: 41.3 µg/m³, 2.5× its usual 16.8 Bydgoszcz, 22 March: 19.5 µg/m³ Bydgoszcz, 23 March: 9.9 µg/m³ Bydgoszcz, 24 March: 10.6 µg/m³ Kędzierzyn-Koźle Kędzierzyn-Koźle, 17 March: 5.9 µg/m³ Kędzierzyn-Koźle, 18 March: 8.1 µg/m³ Kędzierzyn-Koźle, 19 March: 22.0 µg/m³ Kędzierzyn-Koźle, 20 March: 38.2 µg/m³, 2.3× its usual 16.5 Kędzierzyn-Koźle, 21 March: 38.2 µg/m³, 2.3× its usual 16.6 Kędzierzyn-Koźle, 22 March: 14.5 µg/m³ Kędzierzyn-Koźle, 23 March: 11.4 µg/m³ Kędzierzyn-Koźle, 24 March: 8.6 µg/m³ Lębork Lębork, 17 March: 3.6 µg/m³ Lębork, 18 March: 5.0 µg/m³ Lębork, 19 March: 24.8 µg/m³ Lębork, 20 March: 37.6 µg/m³, 2.4× its usual 15.7 Lębork, 21 March: 42.0 µg/m³, 2.7× its usual 15.4 Lębork, 22 March: 19.5 µg/m³ Lębork, 23 March: 23.1 µg/m³ Lębork, 24 March: 17.2 µg/m³ Gdynia Gdynia, 17 March: 4.0 µg/m³ Gdynia, 18 March: 5.1 µg/m³ Gdynia, 19 March: 13.6 µg/m³ Gdynia, 20 March: 32.0 µg/m³, 2.3× its usual 13.7 Gdynia, 21 March: 32.0 µg/m³, 2.3× its usual 13.8 Gdynia, 22 March: 16.1 µg/m³ Gdynia, 23 March: 12.6 µg/m³ Gdynia, 24 March: 15.2 µg/m³ Świecie Świecie, 17 March: 3.4 µg/m³ Świecie, 18 March: 4.2 µg/m³ Świecie, 19 March: 15.9 µg/m³ Świecie, 20 March: 31.7 µg/m³, 2.1× its usual 15.1 Świecie, 21 March: 29.0 µg/m³ Świecie, 22 March: 15.1 µg/m³ Świecie, 23 March: 7.6 µg/m³ Świecie, 24 March: 8.9 µg/m³ Szczecin Szczecin, 17 March: 8.9 µg/m³ Szczecin, 18 March: 14.1 µg/m³ Szczecin, 19 March: 19.5 µg/m³ Szczecin, 20 March: 31.1 µg/m³, 2.0× its usual 15.2 Szczecin, 21 March: 25.4 µg/m³ Szczecin, 22 March: 22.5 µg/m³ Szczecin, 23 March: 10.1 µg/m³ Szczecin, 24 March: 9.5 µg/m³ Ełk Ełk, 17 March: 3.6 µg/m³ Ełk, 18 March: 5.5 µg/m³ Ełk, 19 March: 8.3 µg/m³ Ełk, 20 March: 29.3 µg/m³, 2.1× its usual 14.2 Ełk, 21 March: 24.7 µg/m³ Ełk, 22 March: 16.2 µg/m³ Ełk, 23 March: 9.4 µg/m³ Ełk, 24 March: 8.6 µg/m³ Zielona Góra Zielona Góra, 17 March: no reading Zielona Góra, 18 March: no reading Zielona Góra, 19 March: no reading Zielona Góra, 20 March: 29.0 µg/m³, 2.5× its usual 11.5 Zielona Góra, 21 March: 30.1 µg/m³, 2.6× its usual 11.6 Zielona Góra, 22 March: 12.6 µg/m³ Zielona Góra, 23 March: 12.2 µg/m³ Zielona Góra, 24 March: 7.6 µg/m³ Działdowo Działdowo, 17 March: 5.8 µg/m³ Działdowo, 18 March: 17.9 µg/m³ Działdowo, 19 March: 30.8 µg/m³ Działdowo, 20 March: 47.4 µg/m³ Działdowo, 21 March: 63.3 µg/m³, 2.2× its usual 28.7 Działdowo, 22 March: 37.4 µg/m³ Działdowo, 23 March: 13.2 µg/m³ Działdowo, 24 March: 28.9 µg/m³ Lublin Lublin, 17 March: 9.6 µg/m³ Lublin, 18 March: 15.4 µg/m³ Lublin, 19 March: 16.5 µg/m³ Lublin, 20 March: 38.7 µg/m³ Lublin, 21 March: 59.7 µg/m³, 2.9× its usual 20.6 Lublin, 22 March: 22.3 µg/m³ Lublin, 23 March: 19.9 µg/m³ Lublin, 24 March: 10.8 µg/m³ Kraków Kraków, 17 March: 8.1 µg/m³ Kraków, 18 March: 8.9 µg/m³ Kraków, 19 March: 16.3 µg/m³ Kraków, 20 March: 38.8 µg/m³ Kraków, 21 March: 49.8 µg/m³, 2.3× its usual 21.9 Kraków, 22 March: 38.4 µg/m³ Kraków, 23 March: 23.0 µg/m³ Kraków, 24 March: 8.7 µg/m³ Łuków Łuków, 17 March: 8.5 µg/m³ Łuków, 18 March: 18.7 µg/m³ Łuków, 19 March: 18.8 µg/m³ Łuków, 20 March: 32.6 µg/m³ Łuków, 21 March: 48.2 µg/m³, 2.8× its usual 17.0 Łuków, 22 March: 24.8 µg/m³ Łuków, 23 March: 16.4 µg/m³ Łuków, 24 March: 16.7 µg/m³ Przemyśl Przemyśl, 17 March: 11.5 µg/m³ Przemyśl, 18 March: 8.1 µg/m³ Przemyśl, 19 March: 24.7 µg/m³ Przemyśl, 20 March: 27.5 µg/m³ Przemyśl, 21 March: 41.2 µg/m³, 2.4× its usual 17.3 Przemyśl, 22 March: 30.2 µg/m³ Przemyśl, 23 March: 13.6 µg/m³ Przemyśl, 24 March: 10.6 µg/m³ Rzeszów Rzeszów, 17 March: 8.3 µg/m³ Rzeszów, 18 March: 7.6 µg/m³ Rzeszów, 19 March: 13.8 µg/m³ Rzeszów, 20 March: 26.3 µg/m³ Rzeszów, 21 March: 41.2 µg/m³, 2.1× its usual 19.6 Rzeszów, 22 March: 28.4 µg/m³ Rzeszów, 23 March: 13.6 µg/m³ Rzeszów, 24 March: 12.9 µg/m³ Nisko Nisko, 17 March: 9.7 µg/m³ Nisko, 18 March: 10.7 µg/m³ Nisko, 19 March: 16.3 µg/m³ Nisko, 20 March: 33.7 µg/m³ Nisko, 21 March: 40.6 µg/m³, 2.1× its usual 19.3 Nisko, 22 March: 30.0 µg/m³ Nisko, 23 March: 16.0 µg/m³ Nisko, 24 March: 14.1 µg/m³ Augustów Augustów, 17 March: 10.1 µg/m³ Augustów, 18 March: 6.8 µg/m³ Augustów, 19 March: 10.9 µg/m³ Augustów, 20 March: 20.2 µg/m³ Augustów, 21 March: 39.3 µg/m³, 2.3× its usual 16.8 Augustów, 22 March: 23.7 µg/m³ Augustów, 23 March: 12.6 µg/m³ Augustów, 24 March: 20.0 µg/m³ Kościerzyna Kościerzyna, 17 March: 4.2 µg/m³ Kościerzyna, 18 March: 9.4 µg/m³ Kościerzyna, 19 March: 19.1 µg/m³ Kościerzyna, 20 March: 28.7 µg/m³ Kościerzyna, 21 March: 36.6 µg/m³, 2.3× its usual 15.6 Kościerzyna, 22 March: 17.6 µg/m³ Kościerzyna, 23 March: 16.2 µg/m³ Kościerzyna, 24 March: 12.2 µg/m³ Elbląg Elbląg, 17 March: 4.3 µg/m³ Elbląg, 18 March: 7.8 µg/m³ Elbląg, 19 March: 19.4 µg/m³ Elbląg, 20 March: 22.1 µg/m³ Elbląg, 21 March: 35.9 µg/m³, 2.6× its usual 13.7 Elbląg, 22 March: 22.6 µg/m³ Elbląg, 23 March: 14.7 µg/m³ Elbląg, 24 March: 13.0 µg/m³ Olsztyn Olsztyn, 17 March: 3.1 µg/m³ Olsztyn, 18 March: 7.0 µg/m³ Olsztyn, 19 March: 13.1 µg/m³ Olsztyn, 20 March: 21.4 µg/m³ Olsztyn, 21 March: 33.8 µg/m³, 2.6× its usual 13.1 Olsztyn, 22 March: 22.5 µg/m³ Olsztyn, 23 March: 8.9 µg/m³ Olsztyn, 24 March: 13.8 µg/m³ Płock Płock, 17 March: 4.1 µg/m³ Płock, 18 March: 8.7 µg/m³ Płock, 19 March: 17.2 µg/m³ Płock, 20 March: 27.1 µg/m³ Płock, 21 March: 32.5 µg/m³, 2.1× its usual 15.3 Płock, 22 March: 20.0 µg/m³ Płock, 23 March: 16.0 µg/m³ Płock, 24 March: 13.9 µg/m³ Suwałki Suwałki, 17 March: 4.1 µg/m³ Suwałki, 18 March: 3.5 µg/m³ Suwałki, 19 March: 7.4 µg/m³ Suwałki, 20 March: 21.2 µg/m³ Suwałki, 21 March: 32.2 µg/m³, 2.6× its usual 12.2 Suwałki, 22 March: 16.4 µg/m³ Suwałki, 23 March: 8.2 µg/m³ Suwałki, 24 March: 14.1 µg/m³ Bytów Bytów, 17 March: 3.8 µg/m³ Bytów, 18 March: 6.0 µg/m³ Bytów, 19 March: 27.5 µg/m³ Bytów, 20 March: 24.8 µg/m³ Bytów, 21 March: 32.2 µg/m³, 2.4× its usual 13.3 Bytów, 22 March: 13.4 µg/m³ Bytów, 23 March: 9.3 µg/m³ Bytów, 24 March: 15.5 µg/m³ Gdańsk Gdańsk, 17 March: 3.5 µg/m³ Gdańsk, 18 March: 3.7 µg/m³ Gdańsk, 19 March: 9.9 µg/m³ Gdańsk, 20 March: 27.6 µg/m³ Gdańsk, 21 March: 30.0 µg/m³, 2.1× its usual 14.2 Gdańsk, 22 March: 12.6 µg/m³ Gdańsk, 23 March: 8.6 µg/m³ Gdańsk, 24 March: 10.1 µg/m³ 17 Mar 18 19 20 21 22 23 24 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
Dębica Subcarpathia, Poland 2 21 March 20.6 2.9× Lublin Lublin, Poland 1 21 March 20.6 2.9× Grajewo Podlasie, Poland 2 21 March 16.8 2.9× Racibórz Silesia, Poland 2 20 March 17.6 2.8× Łuków Lublin, Poland 1 21 March 17.0 2.8× Kutno Łódź Voivodeship, Poland 2 20 March 20.1 2.7× Lębork Pomerania, Poland 2 21 March 15.4 2.7× Żyrardów Mazovia, Poland 1 20 March 18.0 2.6× Elbląg Warmia-Masuria, Poland 1 21 March 13.7 2.6× Olsztyn Warmia-Masuria, Poland 1 21 March 13.1 2.6× Suwałki Podlasie, Poland 1 21 March 12.2 2.6× Zielona Góra Lubusz, Poland 2 21 March 11.6 2.6× Opole Opole Voivodeship, Poland 2 21 March 17.5 2.5× Bydgoszcz Kujawsko-Pomorskie, Poland 2 21 March 16.8 2.5× Poznań Greater Poland, Poland 2 20 March 18.5 2.4× Siedlce Mazovia, Poland 2 21 March 18.6 2.4× Przemyśl Subcarpathia, Poland 1 21 March 17.3 2.4× Bytów Pomerania, Poland 1 21 March 13.3 2.4× Kraków Lesser Poland, Poland 1 21 March 21.9 2.3× Katowice Silesia, Poland 2 21 March 20.3 2.3× Zamość Lublin, Poland 2 21 March 19.1 2.3× Augustów Podlasie, Poland 1 21 March 16.8 2.3× Kędzierzyn-Koźle Opole Voivodeship, Poland 2 20 March 16.5 2.3× Kościerzyna Pomerania, Poland 1 21 March 15.6 2.3× Gdynia Pomerania, Poland 2 20 March 13.7 2.3× Działdowo Warmia-Masuria, Poland 1 21 March 28.7 2.2× Zgierz Łódź Voivodeship, Poland 2 20 March 23.6 2.2× Radomsko Łódź Voivodeship, Poland 1 20 March 22.5 2.2× Łask Łódź Voivodeship, Poland 1 20 March 30.7 2.1× Włocławek Kujawsko-Pomorskie, Poland 1 20 March 24.8 2.1× Czechowice-Dziedzice Silesia, Poland 2 20 March 22.8 2.1× Bielsko-Biala Silesia, Poland 1 20 March 22.7 2.1× Rzeszów Subcarpathia, Poland 1 21 March 19.6 2.1× Nisko Subcarpathia, Poland 1 21 March 19.3 2.1× Płock Mazovia, Poland 1 21 March 15.3 2.1× Świecie Kujawsko-Pomorskie, Poland 1 20 March 15.1 2.1× Gdańsk Pomerania, Poland 1 21 March 14.2 2.1× Ełk Warmia-Masuria, Poland 1 20 March 14.2 2.1× Kościan Greater Poland, Poland 1 20 March 27.2 2.0× Szczecin West Pomerania, Poland 1 20 March 15.2 2.0×
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
Number 14 of 36 episodes in Poland since our records began, by cities reached.
Eastern Europe, October and November 2024 141 Europe, 22 to 23 January 2025 123 Eastern Europe, December 2025 118 Europe, 8 to 10 November 2025 73 Eastern Europe, January 2026 70 Eastern Europe, March 2023 59 Germany, Poland and Czechia, February 2026 54 North-eastern Europe, December 2025 54 Eastern Europe, 30 November to 8 December 2024 53 Eastern Europe, September 2023 53 Poland, September 2024 51 Europe, 28 to 31 January 2024 50 Poland, 20 to 21 March 2024 40 Bars: cities reached; colour: the level of the episode's highest daily reading. All 36 .
Use this page SmogRank, Poland, 20 to 21 March 2024: 40 cities with PM2.5 at twice their usual or more, 20 to 21 March 2024, smogrank.com/episodes/2024-03-20-poland (accessed 4 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.
