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 14 Jan 2025: Opole 42.0 µg/m³, Racibórz 34.4 µg/m³ and Zgierz 33.3 µg/m³.
- 1OpoleOpole Voivodeship42.0
- 2RacibórzSilesia34.4
- 3ZgierzŁódź Voivodeship33.3
- 4Wodzisław ŚląskiSilesia31.9
- 5Kędzierzyn-KoźleOpole Voivodeship31.8
- 6ŻywiecSilesia31.6
- 7Jastrzębie ZdrójSilesia31.5
- 8KłodzkoLower Silesia30.9
- 9OtwockMazovia30.6
- 10Skarżysko-KamiennaŚwiętokrzyskie29.0
- 11Bielsko-BialaSilesia28.7
- 12Czechowice-DziedziceSilesia27.6
- 13KatowiceSilesia26.1
- 14KielceŚwiętokrzyskie24.4
- 15AugustówPodlasie24.2
- 16ŁaskŁódź Voivodeship24.0
- 17KaliszGreater Poland23.9
- 18CieszynSilesia22.6
- 19KrakówLesser Poland22.3
- 20PołaniecŚwiętokrzyskie22.0
+ 47 more cities, 21.5 µg/m³ and below
Not counted on this day, too few days measured: Chojnów since 12 Jan 2025, Kudowa-Zdrój since 10 Jan 2025, Działdowo since 9 Jan 2025 and 3 more cities.
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.