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 to17 Jan 2025 That day's board

The worst cities in Poland for PM2.5 over the 30 days to 17 Jan 2025: Opole 43.7 µg/m³, Racibórz 35.9 µg/m³ and Zgierz 35.3 µg/m³.

  1. 1OpoleOpole Voivodeship43.7
  2. 2RacibórzSilesia35.9
  3. 3ZgierzŁódź Voivodeship35.3
  4. 4ŻywiecSilesia34.7
  5. 5OtwockMazovia33.3
  6. 6Wodzisław ŚląskiSilesia33.2
  7. 7Kędzierzyn-KoźleOpole Voivodeship33.2
  8. 8KłodzkoLower Silesia33.0
  9. 9Jastrzębie ZdrójSilesia33.0
  10. 10Bielsko-BialaSilesia30.9
  11. 11Skarżysko-KamiennaŚwiętokrzyskie30.1
  12. 12Czechowice-DziedziceSilesia29.2
  13. 13KatowiceSilesia27.3
  14. 14ŁaskŁódź Voivodeship25.6
  15. 15KielceŚwiętokrzyskie25.4
  16. 16KaliszGreater Poland25.1
  17. 17AugustówPodlasie25.0
  18. 18KrakówLesser Poland23.6
  19. 19CieszynSilesia23.4
  20. 20Jelenia GóraLower Silesia22.8

+ 47 more cities, the next at 22.5 µg/m³

Not counted on this day, too few days measured: Chojnów since 12 Jan 2025, Kudowa-Zdrój since 10 Jan 2025, Działdowo since 9 Jan 2025 and 3 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 reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. Most cities there are missing from this board, not clean. Why.