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
    34
  2. 2HavířovMoravian-Silesian Region
    33
  3. 3Český TěšínMoravian-Silesian Region
    32
  4. 4OstravaMoravian-Silesian Region
    31
  5. 4DěčínÚstí nad Labem Region
    31
  6. 6Valašské MeziříčíZlín
    30
  7. 6TřinecMoravian-Silesian Region
    30
  8. 8Frýdek-MístekMoravian-Silesian Region
    30
  9. 9KarvináMoravian-Silesian Region
    30
  10. 10PřerovOlomouc Region
    29
  11. 11ZlínZlín
    28
  12. 12OlomoucOlomouc Region
    28
  13. 12HraniceOlomouc Region
    28
  14. 14OpavaMoravian-Silesian Region
    28
  15. 15BerounCentral Bohemia
    27
  16. 16PardubicePardubice Region
    26
  17. 16Hradec KrálovéHradec Králové Region
    26
  18. 16HodonínSouth Moravian
    26
  19. 19Mladá BoleslavCentral Bohemia
    26
  20. 20TepliceÚstí nad Labem Region
    25
  21. 21JihlavaVysocina
    24
  22. 22Ústí nad LabemÚstí nad Labem Region
    24
  23. 23MostÚstí nad Labem Region
    24
  24. 24PilsenPlzeň Region
    22
  25. 25PraguePrague
    22
  26. 26BrnoSouth Moravian
    22
  27. 27KroměřížZlín
    22
  28. 28LitvínovÚstí nad Labem Region
    22
  29. 28KladnoCentral Bohemia
    22
  30. 30ZnojmoSouth Moravian
    22
  31. 30ŽideniceSouth Moravian
    22
  32. 32LiberecLiberec Region
    21
  33. 33České BudějoviceSouth Bohemian Region
    21
  34. 34KadaňÚstí nad Labem Region
    20
  35. 35Žďár nad SázavouVysocina
    17
  36. 36SokolovCarlsbad Region
    17
Excellent0–50
Good51–100
Lightly polluted101–150
Moderately polluted151–200
Heavily polluted201–300
Severely polluted301+

China's Air Quality Index (HJ 633-2012), PM2.5 individual 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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