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 13 Dec 2025: Żywiec 57.0 µg/m³, Zgierz 29.7 µg/m³ and Skarżysko-Kamienna 28.6 µg/m³.
- 1ŻywiecSilesia57.0
- 2ZgierzŁódź Voivodeship29.7
- 3Skarżysko-KamiennaŚwiętokrzyskie28.6
- 4WłocławekKujawsko-Pomorskie28.5
- 5KaliszGreater Poland28.1
- 6RadomskoŁódź Voivodeship27.6
- 7ŁaskŁódź Voivodeship27.3
- 8KutnoŁódź Voivodeship27.0
- 9Jastrzębie ZdrójSilesia26.0
- 10Gorzów WielkopolskiLubusz24.8
- 11Czechowice-DziedziceSilesia24.8
- 12PoznańGreater Poland24.4
- 13TarnówLesser Poland24.3
- 14KrakówLesser Poland24.1
- 15ToruńKujawsko-Pomorskie23.9
- 16AugustówPodlasie23.4
- 17ŻaryLubusz23.0
- 18OtwockMazovia22.8
- 19NiskoSubcarpathia22.6
- 20Jelenia GóraLower Silesia22.4
+ 43 more cities, 22.3 µg/m³ and below
Not counted on this day, too few days measured: Bielsko-Biala since 21 Oct 2025, Tomaszów Lubelski since 19 Oct 2025, Siedlce since 19 Oct 2025 and 2 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.