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
    2
  2. 2PrešovPrešov Region
    2
  3. 3ZvolenBanská Bystrica Region
    2
  4. 3KomárnoNitra Region
    2
  5. 5ŽilinaŽilina Region
    2
  6. 6HumennéPrešov Region
    2
  7. 7BardejovPrešov Region
    2
  8. 8TrebišovKošice Region
    2
  9. 8SninaPrešov Region
    2
  10. 8Liptovský Mikulᚎilina Region
    2
  11. 11TrnavaTrnava Region
    2
  12. 11SenecBratislava Region
    2
  13. 11LučenecBanská Bystrica Region
    2
  14. 14SereďTrnava Region
    2
  15. 15RužomberokŽilina Region
    2
  16. 15BratislavaBratislava Region
    2
  17. 17KošiceKošice Region
    2
  18. 17TrenčínTrenčín Region
    2
  19. 17PartizánskeTrenčín Region
    2
  20. 20SenicaTrnava Region
    2
  21. 21Vranov nad TopľouPrešov Region
    1
  22. 22ČadcaŽilina Region
    1
  23. 23PezinokBratislava Region
    1
  24. 24PrievidzaTrenčín Region
    1
  25. 25PopradPrešov Region
    1
  26. 25Žiar nad HronomBanská Bystrica Region
    1
  27. 27HandlováTrenčín Region
    1
  28. 28PúchovTrenčín Region
    1
  29. 28NitraNitra Region
    1
  30. 28MalackyBratislava Region
    1
  31. 31Banská BystricaBanská Bystrica Region
    1
  32. 32Devínska Nová VesBratislava Region
    1
Low risk1–3
Moderate risk4–6
High risk7–10
Very high risk10+

Canada's AQHI+ for PM2.5 (1 point per 10 µg/m³), which is defined on hourly values. 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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