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 18 Mar 2025: Krotoszyn 59.2 µg/m³, Otwock 49.2 µg/m³ and Lubań 46.9 µg/m³.
- 1KrotoszynGreater Poland59.2
- 2OtwockMazovia49.2
- 3LubańLower Silesia46.9
- 4KłodzkoLower Silesia45.1
- 5KaliszGreater Poland43.6
- 6Skarżysko-KamiennaŚwiętokrzyskie42.9
- 7PoznańGreater Poland42.3
- 8ŁaskŁódź Voivodeship42.0
- 9ŻywiecSilesia40.3
- 10LublinLublin40.2
- 11WłocławekKujawsko-Pomorskie40.2
- 12Bielsko-BialaSilesia38.5
- 13Czechowice-DziedziceSilesia38.4
- 14AugustówPodlasie37.8
- 15PołaniecŚwiętokrzyskie36.8
- 16Tomaszów LubelskiLublin36.7
- 17Wysokie MazowieckiePodlasie36.3
- 18Jastrzębie ZdrójSilesia35.9
- 19SiedlceMazovia35.8
- 20OpoleOpole Voivodeship35.3
+ 53 more cities, the next at 34.6 µg/m³
Not counted on this day, too few days measured: Kutno since 14 Mar 2025, Wodzisław Śląski since 1 Mar 2025, Zgierz since 12 Feb 2025 and Cieszyn since 18 Jan 2025.
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 reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. Most cities there are missing from this board, not clean. Why.