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 2024: Działdowo 33.4 µg/m³, Opole 28.3 µg/m³ and Zgierz 27.1 µg/m³.
- 1DziałdowoWarmia-Masuria33.4
- 2OpoleOpole Voivodeship28.3
- 3ZgierzŁódź Voivodeship27.1
- 4DębicaSubcarpathia26.9
- 5Skarżysko-KamiennaŚwiętokrzyskie25.4
- 6Kudowa-ZdrójLower Silesia24.6
- 7AugustówPodlasie23.7
- 8WłocławekKujawsko-Pomorskie23.7
- 9ChojnówLower Silesia22.9
- 10KościanGreater Poland22.3
- 11KrakówLesser Poland21.6
- 12KłodzkoLower Silesia21.6
- 13KatowiceSilesia21.5
- 14KutnoŁódź Voivodeship21.1
- 15Jastrzębie ZdrójSilesia21.1
- 16RacibórzSilesia20.7
- 17NiskoSubcarpathia20.4
- 18ŻywiecSilesia20.4
- 19Czechowice-DziedziceSilesia20.4
- 20PoznańGreater Poland20.1
+ 57 more cities, 19.5 µg/m³ and below
Not counted on this day, too few days measured: Nysa since 9 Feb 2024. Days missing from the source archive fall in this window, so fewer countries are counted.
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.