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.
The worst cities in Poland for PM2.5 over the 30 days to 22 May 2023: Włocławek 22.1 µg/m³, Jastrzębie Zdrój 19.0 µg/m³ and Racibórz 16.2 µg/m³.
- 1WłocławekKujawsko-Pomorskie22.1
- 2Jastrzębie ZdrójSilesia19.0
- 3RacibórzSilesia16.2
- 4CieszynSilesia14.6
- 5Wodzisław ŚląskiSilesia14.5
- 6Czechowice-DziedziceSilesia14.2
- 7KrakówLesser Poland13.6
- 8Jelenia GóraLower Silesia13.5
- 9KatowiceSilesia12.6
- 10WrocławLower Silesia12.5
- 11ŁaskŁódź Voivodeship12.4
- 12GdyniaPomerania12.0
- 13SzczecinWest Pomerania11.5
- 14RadomMazovia11.4
- 15GdańskPomerania11.4
- 16ŻyrardówMazovia11.1
- 17ŁukówLublin11.1
- 18StarachowiceŚwiętokrzyskie10.9
- 19TarnówLesser Poland10.8
- 20GrajewoPodlasie10.8
+ 22 more cities, 10.7 µg/m³ and below
Not counted on this day, too few days measured: Kłodzko since 21 May 2023, Rzeszów since 19 May 2023, Nisko since 19 May 2023 and 17 more cities. Days missing from the source archive fall in this window, so fewer countries are counted.
Cities counted each 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.