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 7 Mar 2026: Otwock 40.9 µg/m³, Żywiec 40.4 µg/m³ and Gorzów Wielkopolski 40.0 µg/m³.
- 1OtwockMazovia40.9
- 2ŻywiecSilesia40.4
- 3Gorzów WielkopolskiLubusz40.0
- 4WłocławekKujawsko-Pomorskie39.5
- 5KaliszGreater Poland38.7
- 6RadomskoŁódź Voivodeship37.5
- 7ZgierzŁódź Voivodeship36.7
- 8KłodzkoLower Silesia36.1
- 9ŁaskŁódź Voivodeship35.5
- 10Czechowice-DziedziceSilesia31.1
- 11DębicaSubcarpathia30.3
- 12PoznańGreater Poland30.2
- 13Jastrzębie ZdrójSilesia30.1
- 14TarnówLesser Poland29.7
- 15ToruńKujawsko-Pomorskie29.7
- 16ŻaryLubusz29.5
- 17KrakówLesser Poland28.5
- 18RzeszówSubcarpathia28.2
- 19WrocławLower Silesia27.8
- 20BydgoszczKujawsko-Pomorskie27.6
+ 37 more cities, 27.3 µg/m³ and below
Not counted on this day, too few days measured: Żyrardów since 13 Feb 2026, Kutno since 16 Jan 2026, Sulechów since 11 Jan 2026 and Skarżysko-Kamienna since 7 Jan 2026.
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.