SmogRank / Countries / Poland / September 2025

Most polluted cities in Poland, September 2025

68 cities in Poland ranked by their average PM2.5 over the 30 days. Worst: Siedlce at 15.8 µg/m³, #194 of 2,439 cities in the world. Cleanest: Opole at 4.5. A city needs measurements on 70% of the days to be ranked.

  1. 1SiedlceMazovia
    15.8
  2. 2KaliszGreater Poland
    12.9
  3. 3ŁaskŁódź Voivodeship
    12.3
  4. 4Jastrzębie ZdrójSilesia
    12.1
  5. 5Tomaszów LubelskiLublin
    12.0
  6. 6ZamośćLublin
    11.8
  7. 6OtwockMazovia
    11.8
  8. 8NiskoSubcarpathia
    11.6
  9. 9ŻyrardówMazovia
    11.5
  10. 10JarosławSubcarpathia
    11.4
  11. 10ŁódźŁódź Voivodeship
    11.4
  12. 12RadomMazovia
    11.3
  13. 12KutnoŁódź Voivodeship
    11.3
  14. 14AugustówPodlasie
    11.0
  15. 15WrocławLower Silesia
    10.9
  16. 15RadomskoŁódź Voivodeship
    10.9
  17. 17PrzemyślSubcarpathia
    10.8
  18. 18Bielsko-BialaSilesia
    10.5
  19. 19ToruńKujawsko-Pomorskie
    10.3
  20. 19KatowiceSilesia
    10.3
  21. 21GdańskPomerania
    10.2
  22. 22LublinLublin
    10.1
  23. 23WarsawMazovia
    10.0
  24. 23RzeszówSubcarpathia
    10.0
  25. 23PoznańGreater Poland
    10.0
  26. 26WawerMazovia
    9.9
  27. 26SopotPomerania
    9.9
  28. 28GdyniaPomerania
    9.8
  29. 29StarachowiceŚwiętokrzyskie
    9.7
  30. 30MielecSubcarpathia
    9.6
  31. 31KielceŚwiętokrzyskie
    9.5
  32. 31EłkWarmia-Masuria
    9.5
  33. 31DębicaSubcarpathia
    9.5
  34. 31KrakówLesser Poland
    9.5
  35. 35Skarżysko-KamiennaŚwiętokrzyskie
    9.2
  36. 35PruszkówMazovia
    9.2
  37. 37Konstancin-JeziornaMazovia
    9.1
  38. 37WłocławekKujawsko-Pomorskie
    9.1
  39. 39LegionowoMazovia
    9.0
  40. 40KłodzkoLower Silesia
    8.8
  41. 41BiałystokPodlasie
    8.7
  42. 42RacibórzSilesia
    8.6
  43. 43PłockMazovia
    8.3
  44. 44Czechowice-DziedziceSilesia
    8.2
  45. 45Zielona GóraLubusz
    8.0
  46. 45KołobrzegWest Pomerania
    8.0
  47. 47SuwałkiPodlasie
    7.9
  48. 48OlsztynWarmia-Masuria
    7.8
  49. 48ElblągWarmia-Masuria
    7.8
  50. 50TarnówLesser Poland
    7.5
  51. 51ŻywiecSilesia
    7.4
  52. 51SzczecinWest Pomerania
    7.4
  53. 51ŚwiecieKujawsko-Pomorskie
    7.4
  54. 54CiechanówMazovia
    7.2
  55. 54Jelenia GóraLower Silesia
    7.2
  56. 56SulechówLubusz
    6.9
  57. 57Kędzierzyn-KoźleOpole Voivodeship
    6.8
  58. 58ŚwinoujścieWest Pomerania
    6.7
  59. 59GiżyckoWarmia-Masuria
    6.5
  60. 59KościerzynaPomerania
    6.5
  61. 61ŻaryLubusz
    6.4
  62. 61BydgoszczKujawsko-Pomorskie
    6.4
  63. 63LubańLower Silesia
    6.2
  64. 64BytówPomerania
    5.9
  65. 65BrzegOpole Voivodeship
    5.8
  66. 66Gorzów WielkopolskiLubusz
    5.6
  67. 67JasłoSubcarpathia
    5.5
  68. 68OpoleOpole Voivodeship
    4.5
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, September 2025 · Poland now