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 to14 Sep 2025 That day's board

The worst cities in Poland for PM2.5 over the 30 days to 14 Sep 2025: Kalisz 13.7 µg/m³, Zamość 12.7 µg/m³ and Nisko 12.5 µg/m³.

  1. 1KaliszGreater Poland13.7
  2. 2ZamośćLublin12.7
  3. 3NiskoSubcarpathia12.5
  4. 4JarosławSubcarpathia12.5
  5. 5Jastrzębie ZdrójSilesia12.3
  6. 6ŁaskŁódź Voivodeship11.9
  7. 7OtwockMazovia11.8
  8. 8KutnoŁódź Voivodeship11.8
  9. 9ŁódźŁódź Voivodeship11.7
  10. 10RadomMazovia11.3
  11. 11PrzemyślSubcarpathia11.3
  12. 12GdyniaPomerania11.2
  13. 13WrocławLower Silesia11.1
  14. 14RadomskoŁódź Voivodeship11.0
  15. 15Bielsko-BialaSilesia11.0
  16. 16ToruńKujawsko-Pomorskie10.5
  17. 17LublinLublin10.4
  18. 18GdańskPomerania10.4
  19. 19PruszkówMazovia10.3
  20. 20StarachowiceŚwiętokrzyskie10.2

+ 44 more cities, 10.2 µg/m³ and below

Not counted on this day, too few days measured: Żyrardów since 13 Sep 2025 and Augustów since 16 Aug 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.