SmogRank / History / City race

Cities in Poland, worst air first, day by day

Each measured city's average over the 30 days to every day since January 2023, worst first. Find your own city to follow it through the race, or keep to one country.

CountriesCities
The 30 days to11 Jan 2025 That day's board

The worst cities in Poland for PM2.5 over the 30 days to 11 Jan 2025: Opole 41.5 µg/m³, Racibórz 34.4 µg/m³ and Zgierz 33.8 µg/m³.

  1. 1OpoleOpole Voivodeship41.5
  2. 2RacibórzSilesia34.4
  3. 3ZgierzŁódź Voivodeship33.8
  4. 4Jastrzębie ZdrójSilesia32.1
  5. 5ŻywiecSilesia31.6
  6. 6Kędzierzyn-KoźleOpole Voivodeship31.6
  7. 7Skarżysko-KamiennaŚwiętokrzyskie31.2
  8. 8ChojnówLower Silesia30.6
  9. 9OtwockMazovia30.3
  10. 10KłodzkoLower Silesia30.0
  11. 11Wodzisław ŚląskiSilesia29.9
  12. 12Bielsko-BialaSilesia28.9
  13. 13Czechowice-DziedziceSilesia28.4
  14. 14KatowiceSilesia26.5
  15. 15KielceŚwiętokrzyskie25.2
  16. 16AugustówPodlasie24.7
  17. 17ŁaskŁódź Voivodeship24.5
  18. 18KaliszGreater Poland24.5
  19. 19PołaniecŚwiętokrzyskie23.0
  20. 20KrakówLesser Poland22.7

+ 48 more cities, 22.3 µg/m³ and below

Not counted on this day, too few days measured: Kudowa-Zdrój since 10 Jan 2025, Działdowo since 9 Jan 2025, Łuków since 27 Dec 2024 and 2 more cities.

30 days7 days
GoodModerateSensitive groupsUnhealthyVery unhealthyHazardousWHO 24-hour guideline, 15 µg/m³Fades where it stood: not counted that day

A city's number is its average over the 30 days, shown only when 21 of them were measured (5 of 7 on the 7-day race), the same minimum as the 30- and 7-day boards. A city whose monitors go quiet fades out where it stood rather than sliding down, so a gap never reads as cleaner air. Some large countries are thin or missing because their monitors' licences don't allow reuse. How we rank.

Not covered: the government monitoring networks of China and Turkey, which publish only on their own websites; we are building the readers for them. Most cities there are missing from this board, not clean. Why.