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 µg/m³ 20 µg/m³0
Every city in Slovakia ranked for August 2025, 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. 1MartinŽilina Region
    12.3
  2. 2PrešovPrešov Region
    11.9
  3. 3ZvolenBanská Bystrica Region
    11.7
  4. 3KomárnoNitra Region
    11.7
  5. 5ŽilinaŽilina Region
    11.4
  6. 6HumennéPrešov Region
    11.1
  7. 7BardejovPrešov Region
    10.9
  8. 8TrebišovKošice Region
    10.8
  9. 8SninaPrešov Region
    10.8
  10. 8Liptovský Mikulᚎilina Region
    10.8
  11. 11TrnavaTrnava Region
    10.7
  12. 11SenecBratislava Region
    10.7
  13. 11LučenecBanská Bystrica Region
    10.7
  14. 14SereďTrnava Region
    10.5
  15. 15RužomberokŽilina Region
    10.3
  16. 15BratislavaBratislava Region
    10.3
  17. 17KošiceKošice Region
    10.2
  18. 17TrenčínTrenčín Region
    10.2
  19. 17PartizánskeTrenčín Region
    10.2
  20. 20SenicaTrnava Region
    10.1
  21. 21Vranov nad TopľouPrešov Region
    10.0
  22. 22ČadcaŽilina Region
    9.9
  23. 23PezinokBratislava Region
    9.7
  24. 24PrievidzaTrenčín Region
    9.2
  25. 25PopradPrešov Region
    8.9
  26. 25Žiar nad HronomBanská Bystrica Region
    8.9
  27. 27HandlováTrenčín Region
    8.7
  28. 28PúchovTrenčín Region
    8.6
  29. 28NitraNitra Region
    8.6
  30. 28MalackyBratislava Region
    8.6
  31. 31Banská BystricaBanská Bystrica Region
    8.0
  32. 32Devínska Nová VesBratislava Region
    6.6
Good0–5
Fair6–15
Moderate16–50
Poor51–90
Very poor91–140
Extremely poor141+

The European Environment Agency's air quality index bands for PM2.5 (2024 revision); it has bands, not numbers, so values stay in µg/m³. 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, August 2025 · Slovakia now

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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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