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 to15 Mar 2025 That day's board

The worst cities in Poland for PM2.5 over the 30 days to 15 Mar 2025: Krotoszyn 61.2 µg/m³, Otwock 51.0 µg/m³ and Lubań 49.8 µg/m³.

  1. 1KrotoszynGreater Poland61.2
  2. 2OtwockMazovia51.0
  3. 3LubańLower Silesia49.8
  4. 4KłodzkoLower Silesia45.9
  5. 5KaliszGreater Poland44.8
  6. 6Skarżysko-KamiennaŚwiętokrzyskie44.4
  7. 7PoznańGreater Poland43.9
  8. 8ŁaskŁódź Voivodeship43.7
  9. 9LublinLublin41.4
  10. 10WłocławekKujawsko-Pomorskie41.4
  11. 11ŻywiecSilesia41.1
  12. 12Czechowice-DziedziceSilesia40.1
  13. 13AugustówPodlasie39.4
  14. 14Bielsko-BialaSilesia39.3
  15. 15OpoleOpole Voivodeship38.4
  16. 16PołaniecŚwiętokrzyskie38.1
  17. 17Jastrzębie ZdrójSilesia37.9
  18. 18Tomaszów LubelskiLublin37.7
  19. 19SiedlceMazovia36.3
  20. 20ŻyrardówMazovia35.9

+ 53 more cities, 35.8 µg/m³ and below

Not counted on this day, too few days measured: Kutno since 14 Mar 2025, Wodzisław Śląski since 1 Mar 2025, Zgierz since 12 Feb 2025 and Cieszyn since 18 Jan 2025.

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.