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 to27 Feb 2023 That day's board

The worst cities in Poland for PM2.5 over the 30 days to 27 Feb 2023: Bielsko-Biala 29.1 µg/m³, Radomsko 28.4 µg/m³ and Jastrzębie Zdrój 27.7 µg/m³.

  1. 1Bielsko-BialaSilesia29.1
  2. 2RadomskoŁódź Voivodeship28.4
  3. 3Jastrzębie ZdrójSilesia27.7
  4. 4RacibórzSilesia26.7
  5. 5WłocławekKujawsko-Pomorskie26.1
  6. 6KłodzkoLower Silesia25.7
  7. 7KaliszGreater Poland25.7
  8. 8Nakło nad NoteciąKujawsko-Pomorskie25.0
  9. 9LublinLublin24.7
  10. 10KatowiceSilesia24.2
  11. 11OtwockMazovia23.2
  12. 12KrakówLesser Poland23.1
  13. 13RzeszówSubcarpathia22.9
  14. 14KielceŚwiętokrzyskie22.6
  15. 15LegionowoMazovia22.5
  16. 16DębicaSubcarpathia22.4
  17. 17ŁaskŁódź Voivodeship22.3
  18. 18WawerMazovia22.0
  19. 19Wodzisław ŚląskiSilesia21.8
  20. 20KrapkowiceOpole Voivodeship21.6

+ 49 more cities, the next at 21.4 µg/m³

Not counted on this day, too few days measured: Wschowa since 5 Feb 2023, Włoszczowa since 5 Feb 2023, Szamotuły since 5 Feb 2023 and 2 more cities. Days missing from the source archive fall in this window, so fewer countries are counted.

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 reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. Most cities there are missing from this board, not clean. Why.