SmogRank / World / Czechia / February 2023

Most polluted cities in Czechia, February 2023

36 cities in Czechia ranked by their average PM2.5 over the 28 days. Worst: Bohumín at 23.3 µg/m³, #73 of 1,175 cities in the world. Cleanest: Sokolov at 11.3. A city needs measurements on 70% of the days to be ranked.

OpenAQ's archive, where our readings come from, has almost none for 25 of these 28 days. Cities in the United States and Europe have them from the EPA's and the European Environment Agency's own records of the same monitors; many cities elsewhere are missing from this board, not clean. Why.

← Bohumín 23.3 µg/m³ 20 µg/m³0
Every city in Czechia ranked for February 2023, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1BohumínMoravian-Silesian Region
    38
  2. 2HavířovMoravian-Silesian Region
    38
  3. 3Český TěšínMoravian-Silesian Region
    37
  4. 4OstravaMoravian-Silesian Region
    37
  5. 4DěčínÚstí nad Labem Region
    37
  6. 6Valašské MeziříčíZlín
    35
  7. 6TřinecMoravian-Silesian Region
    35
  8. 8Frýdek-MístekMoravian-Silesian Region
    35
  9. 9KarvináMoravian-Silesian Region
    35
  10. 10PřerovOlomouc Region
    33
  11. 11ZlínZlín
    33
  12. 12OlomoucOlomouc Region
    32
  13. 12HraniceOlomouc Region
    32
  14. 14OpavaMoravian-Silesian Region
    32
  15. 15BerounCentral Bohemia
    32
  16. 16PardubicePardubice Region
    30
  17. 16Hradec KrálovéHradec Králové Region
    30
  18. 16HodonínSouth Moravian
    30
  19. 19Mladá BoleslavCentral Bohemia
    30
  20. 20TepliceÚstí nad Labem Region
    28
  21. 21JihlavaVysocina
    28
  22. 22Ústí nad LabemÚstí nad Labem Region
    28
  23. 23MostÚstí nad Labem Region
    27
  24. 24PilsenPlzeň Region
    25
  25. 25PraguePrague
    25
  26. 26BrnoSouth Moravian
    25
  27. 27KroměřížZlín
    25
  28. 28LitvínovÚstí nad Labem Region
    25
  29. 28KladnoCentral Bohemia
    25
  30. 30ZnojmoSouth Moravian
    25
  31. 30ŽideniceSouth Moravian
    25
  32. 32LiberecLiberec Region
    25
  33. 33České BudějoviceSouth Bohemian Region
    23
  34. 34KadaňÚstí nad Labem Region
    23
  35. 35Žďár nad SázavouVysocina
    20
  36. 36SokolovCarlsbad Region
    18
Good0–50
Satisfactory51–100
Moderate101–200
Poor201–300
Very poor301–400
Severe401+

India's National Air Quality Index (CPCB), PM2.5 sub-index. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, February 2023 · Czechia now

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SmogRank, most polluted cities in Czechia, PM2.5, February 2023, smogrank.com/cz/history/2023-02 (accessed 2 Oct 2026).

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