SmogRank / Countries / Czechia / September 2023

Most polluted cities in Czechia, September 2023

31 cities in Czechia ranked by their average PM2.5 over the 30 days. Worst: Ostrava at 14.6 µg/m³, #116 of 1,830 cities in the world. Cleanest: Pilsen at 8.8. A city needs measurements on 70% of the days to be ranked.

  1. 1OstravaMoravian-Silesian Region
    14.6
  2. 2OlomoucOlomouc Region
    14.4
  3. 2MostÚstí nad Labem Region
    14.4
  4. 2DěčínÚstí nad Labem Region
    14.4
  5. 2Český TěšínMoravian-Silesian Region
    14.4
  6. 6KadaňÚstí nad Labem Region
    14.1
  7. 6BerounCentral Bohemia
    14.1
  8. 8HavířovMoravian-Silesian Region
    13.3
  9. 9PřerovOlomouc Region
    13.1
  10. 10PardubicePardubice Region
    12.8
  11. 11BohumínMoravian-Silesian Region
    12.7
  12. 12TepliceÚstí nad Labem Region
    12.5
  13. 12LitvínovÚstí nad Labem Region
    12.5
  14. 12KladnoCentral Bohemia
    12.5
  15. 12Hradec KrálovéHradec Králové Region
    12.5
  16. 16Frýdek-MístekMoravian-Silesian Region
    12.3
  17. 17ZnojmoSouth Moravian
    12.2
  18. 18OpavaMoravian-Silesian Region
    12.1
  19. 19PraguePrague
    11.9
  20. 20Valašské MeziříčíZlín
    11.8
  21. 21ŽideniceSouth Moravian
    11.7
  22. 21TřinecMoravian-Silesian Region
    11.7
  23. 23Mladá BoleslavCentral Bohemia
    11.6
  24. 24ZlínZlín
    11.1
  25. 25BrnoSouth Moravian
    10.9
  26. 26LiberecLiberec Region
    10.8
  27. 27KroměřížZlín
    10.7
  28. 28Ústí nad LabemÚstí nad Labem Region
    10.6
  29. 29České BudějoviceSouth Bohemian Region
    9.8
  30. 30SokolovCarlsbad Region
    8.8
  31. 30PilsenPlzeň Region
    8.8
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 2023 · Czechia now