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 10 Dec 2025: Żywiec 52.5 µg/m³, Skarżysko-Kamienna 29.9 µg/m³ and Zgierz 29.7 µg/m³.
- 1ŻywiecSilesia52.5
- 2Skarżysko-KamiennaŚwiętokrzyskie29.9
- 3ZgierzŁódź Voivodeship29.7
- 4WłocławekKujawsko-Pomorskie29.1
- 5KaliszGreater Poland28.0
- 6ŁaskŁódź Voivodeship27.3
- 7RadomskoŁódź Voivodeship27.2
- 8KutnoŁódź Voivodeship27.2
- 9Jastrzębie ZdrójSilesia25.9
- 10AugustówPodlasie25.5
- 11ToruńKujawsko-Pomorskie24.5
- 12PoznańGreater Poland24.3
- 13Czechowice-DziedziceSilesia24.3
- 14Gorzów WielkopolskiLubusz24.1
- 15PruszkówMazovia24.0
- 16KrakówLesser Poland23.9
- 17OtwockMazovia23.5
- 18TarnówLesser Poland23.3
- 19NiskoSubcarpathia23.1
- 20WrocławLower Silesia22.1
+ 43 more cities, 21.5 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 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.