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 to11 Apr 2025 That day's board

The worst cities in Poland for PM2.5 over the 30 days to 11 Apr 2025: Krotoszyn 35.4 µg/m³, Otwock 28.0 µg/m³ and Kłodzko 27.6 µg/m³.

  1. 1KrotoszynGreater Poland35.4
  2. 2OtwockMazovia28.0
  3. 3KłodzkoLower Silesia27.6
  4. 4Jastrzębie ZdrójSilesia27.4
  5. 5ŁaskŁódź Voivodeship27.2
  6. 6ŻywiecSilesia26.8
  7. 7Bielsko-BialaSilesia26.0
  8. 8LubańLower Silesia25.4
  9. 9KaliszGreater Poland25.0
  10. 10Czechowice-DziedziceSilesia24.1
  11. 11Skarżysko-KamiennaŚwiętokrzyskie23.7
  12. 12WłocławekKujawsko-Pomorskie22.8
  13. 13ŁódźŁódź Voivodeship22.3
  14. 14PoznańGreater Poland22.2
  15. 15RadomMazovia21.7
  16. 16KatowiceSilesia21.7
  17. 17RzeszówSubcarpathia21.5
  18. 18WschowaLubusz21.5
  19. 19Tomaszów LubelskiLublin21.2
  20. 20DębicaSubcarpathia21.1

+ 51 more cities, 20.9 µg/m³ and below

Not counted on this day, too few days measured: Starachowice since 10 Apr 2025, Wysokie Mazowieckie since 1 Apr 2025, Kutno since 14 Mar 2025 and 2 more cities.

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.