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 to10 Mar 2026 That day's board

The worst cities in Poland for PM2.5 over the 30 days to 10 Mar 2026: Otwock 44.4 µg/m³, Gorzów Wielkopolski 41.1 µg/m³ and Włocławek 40.3 µg/m³.

  1. 1OtwockMazovia44.4
  2. 2Gorzów WielkopolskiLubusz41.1
  3. 3WłocławekKujawsko-Pomorskie40.3
  4. 4KaliszGreater Poland38.5
  5. 5RadomskoŁódź Voivodeship38.0
  6. 6ZgierzŁódź Voivodeship36.6
  7. 7ŻywiecSilesia36.4
  8. 8ŁaskŁódź Voivodeship35.6
  9. 9DębicaSubcarpathia31.1
  10. 10KłodzkoLower Silesia30.9
  11. 11ToruńKujawsko-Pomorskie30.8
  12. 12PoznańGreater Poland30.0
  13. 13Czechowice-DziedziceSilesia29.9
  14. 14TarnówLesser Poland29.3
  15. 15BydgoszczKujawsko-Pomorskie28.7
  16. 16RzeszówSubcarpathia28.6
  17. 17StarachowiceŚwiętokrzyskie28.4
  18. 18JarosławSubcarpathia28.3
  19. 19ZamośćLublin27.8
  20. 20KrakówLesser Poland27.7

+ 38 more cities, 27.6 µg/m³ and below

Not counted on this day, too few days measured: Kutno since 16 Jan 2026 and Sulechów since 11 Jan 2026.

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.