SmogRank / World / Slovakia / August 2025

Most polluted cities in Slovakia, August 2025

32 cities in Slovakia ranked by their average PM2.5 over the 31 days. Worst: Martin at 12.3 µg/m³, #638 of 2,503 cities in the world. Cleanest: Devínska Nová Ves at 6.6. A city needs measurements on 70% of the days to be ranked.

← Martin 12.3
Every city in Slovakia ranked for August 2025, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1MartinŽilina Region
    18
  2. 2PrešovPrešov Region
    17
  3. 3ZvolenBanská Bystrica Region
    17
  4. 3KomárnoNitra Region
    17
  5. 5ŽilinaŽilina Region
    17
  6. 6HumennéPrešov Region
    16
  7. 7BardejovPrešov Region
    16
  8. 8TrebišovKošice Region
    16
  9. 8SninaPrešov Region
    16
  10. 8Liptovský Mikulᚎilina Region
    16
  11. 11TrnavaTrnava Region
    16
  12. 11SenecBratislava Region
    16
  13. 11LučenecBanská Bystrica Region
    16
  14. 14SereďTrnava Region
    15
  15. 15RužomberokŽilina Region
    15
  16. 15BratislavaBratislava Region
    15
  17. 17KošiceKošice Region
    15
  18. 17TrenčínTrenčín Region
    15
  19. 17PartizánskeTrenčín Region
    15
  20. 20SenicaTrnava Region
    15
  21. 21Vranov nad TopľouPrešov Region
    15
  22. 22ČadcaŽilina Region
    15
  23. 23PezinokBratislava Region
    14
  24. 24PrievidzaTrenčín Region
    14
  25. 25PopradPrešov Region
    13
  26. 25Žiar nad HronomBanská Bystrica Region
    13
  27. 27HandlováTrenčín Region
    13
  28. 28PúchovTrenčín Region
    13
  29. 28NitraNitra Region
    13
  30. 28MalackyBratislava Region
    13
  31. 31Banská BystricaBanská Bystrica Region
    12
  32. 32Devínska Nová VesBratislava Region
    10
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

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SmogRank, most polluted cities in Slovakia, PM2.5, August 2025, smogrank.com/sk/history/2025-08 (accessed 2 Oct 2026).

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