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 to12 Mar 2025 That day's board

The worst cities in Poland for PM2.5 over the 30 days to 12 Mar 2025: Krotoszyn 62.6 µg/m³, Otwock 53.4 µg/m³ and Lubań 52.6 µg/m³.

  1. 1KrotoszynGreater Poland62.6
  2. 2OtwockMazovia53.4
  3. 3LubańLower Silesia52.6
  4. 4KłodzkoLower Silesia49.6
  5. 5Skarżysko-KamiennaŚwiętokrzyskie48.3
  6. 6KaliszGreater Poland46.9
  7. 7PoznańGreater Poland46.8
  8. 8ŻywiecSilesia46.1
  9. 9ŁaskŁódź Voivodeship45.9
  10. 10LublinLublin44.7
  11. 11Bielsko-BialaSilesia44.7
  12. 12Czechowice-DziedziceSilesia44.0
  13. 13WłocławekKujawsko-Pomorskie43.6
  14. 14OpoleOpole Voivodeship42.2
  15. 15PołaniecŚwiętokrzyskie41.4
  16. 16Tomaszów LubelskiLublin41.2
  17. 17AugustówPodlasie40.8
  18. 18Jastrzębie ZdrójSilesia40.6
  19. 19KutnoŁódź Voivodeship39.8
  20. 20SiedlceMazovia38.4

+ 54 more cities, 38.3 µg/m³ and below

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