SmogRank / Countries / Czechia / 2023

Most polluted cities in Czechia, 2023

19 cities in Czechia ranked by their average PM2.5 over the 365 days; 19 above the WHO annual guideline (5.0 µg/m³). Worst: Havířov at 15.7 µg/m³, #45 of 969 cities in the world. Cleanest: Pilsen at 10.0. A city needs measurements on 70% of the days to be ranked.

  1. 1HavířovMoravian-Silesian Region
    15.73.1×
  2. 2DěčínÚstí nad Labem Region
    15.63.1×
  3. 3BohumínMoravian-Silesian Region
    15.33.1×
  4. 4Český TěšínMoravian-Silesian Region
    15.23.0×
  5. 5OstravaMoravian-Silesian Region
    14.72.9×
  6. 6Frýdek-MístekMoravian-Silesian Region
    14.52.9×
  7. 7OlomoucOlomouc Region
    13.72.7×
  8. 8Valašské MeziříčíZlín
    13.62.7×
  9. 9MostÚstí nad Labem Region
    13.02.6×
  10. 10ZnojmoSouth Moravian
    12.32.5×
  11. 11Hradec KrálovéHradec Králové Region
    12.22.4×
  12. 12LitvínovÚstí nad Labem Region
    12.12.4×
  13. 13ZlínZlín
    12.02.4×
  14. 14Mladá BoleslavCentral Bohemia
    11.82.4×
  15. 15ŽideniceSouth Moravian
    11.62.3×
  16. 16Ústí nad LabemÚstí nad Labem Region
    11.32.3×
  17. 17LiberecLiberec Region
    11.02.2×
  18. 18BrnoSouth Moravian
    10.82.2×
  19. 19PilsenPlzeň Region
    10.02.0×
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, 2023 · Czechia now

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SmogRank, most polluted cities in Czechia, PM2.5, 2023, smogrank.com/cz/history/2023 (accessed 2 Oct 2026).

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