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 to9 Oct 2026 That day's board

The worst cities in Poland for PM2.5 over the 30 days to 9 Oct 2026: Otwock 16.2 µg/m³, Kalisz 14.1 µg/m³ and Radomsko 13.4 µg/m³.

  1. 1OtwockMazovia16.2
  2. 2KaliszGreater Poland14.1
  3. 3RadomskoŁódź Voivodeship13.4
  4. 4RadomMazovia12.4
  5. 5PruszkówMazovia12.3
  6. 6StarachowiceŚwiętokrzyskie12.1
  7. 7WrocławLower Silesia11.9
  8. 8NiskoSubcarpathia11.8
  9. 9ZamośćLublin11.7
  10. 10KatowiceSilesia11.6
  11. 11ŻywiecSilesia11.4
  12. 12Jastrzębie ZdrójSilesia11.4
  13. 13RzeszówSubcarpathia11.3
  14. 14ToruńKujawsko-Pomorskie11.2
  15. 15BydgoszczKujawsko-Pomorskie11.2
  16. 16LublinLublin11.1
  17. 17ŁódźŁódź Voivodeship11.1
  18. 18KłodzkoLower Silesia11.0
  19. 19Bielsko-BialaSilesia10.7
  20. 20PołaniecŚwiętokrzyskie10.6

+ 36 more cities, 10.5 µg/m³ and below

Not counted on this day, too few days measured: Włocławek since 6 Oct 2026, Gdynia since 14 Sep 2026 and Łask since 10 Sep 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.