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 16 Feb 2025: Żywiec 59.1 µg/m³, Bielsko-Biala 49.9 µg/m³ and Krotoszyn 49.4 µg/m³.
- 1ŻywiecSilesia59.1
- 2Bielsko-BialaSilesia49.9
- 3KrotoszynGreater Poland49.4
- 4Skarżysko-KamiennaŚwiętokrzyskie45.9
- 5LubańLower Silesia45.5
- 6OpoleOpole Voivodeship45.1
- 7KrakówLesser Poland38.9
- 8KłodzkoLower Silesia38.4
- 9Czechowice-DziedziceSilesia38.2
- 10OtwockMazovia37.8
- 11ŁaskŁódź Voivodeship37.8
- 12Tomaszów LubelskiLublin37.1
- 13RacibórzSilesia36.7
- 14PołaniecŚwiętokrzyskie36.3
- 15KielceŚwiętokrzyskie35.5
- 16Jastrzębie ZdrójSilesia34.7
- 17LublinLublin34.6
- 18KaliszGreater Poland34.5
- 19WłocławekKujawsko-Pomorskie33.8
- 20PoznańGreater Poland33.3
+ 54 more cities, the next at 33.3 µg/m³
Not counted on this day, too few days measured: Zgierz since 12 Feb 2025, Wodzisław Śląski since 18 Jan 2025, Cieszyn since 18 Jan 2025 and 5 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 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.