SmogRank / Countries / Slovakia / April 2025

Most polluted cities in Slovakia, April 2025

32 cities in Slovakia ranked by their average PM2.5 over the 30 days. Worst: Humenné at 14.3 µg/m³, #295 of 2,286 cities in the world. Cleanest: Senec at 7.1. A city needs measurements on 70% of the days to be ranked.

  1. 1HumennéPrešov Region
    14.3
  2. 2PrešovPrešov Region
    13.2
  3. 3LučenecBanská Bystrica Region
    13.1
  4. 4KošiceKošice Region
    11.8
  5. 5MartinŽilina Region
    11.6
  6. 6ČadcaŽilina Region
    11.4
  7. 7ŽilinaŽilina Region
    11.3
  8. 8PúchovTrenčín Region
    11.1
  9. 9RužomberokŽilina Region
    10.9
  10. 10TrebišovKošice Region
    10.7
  11. 11Vranov nad TopľouPrešov Region
    10.5
  12. 11BardejovPrešov Region
    10.5
  13. 13PezinokBratislava Region
    10.4
  14. 14SenicaTrnava Region
    10.1
  15. 15ZvolenBanská Bystrica Region
    9.9
  16. 16BratislavaBratislava Region
    9.8
  17. 17TrenčínTrenčín Region
    9.6
  18. 18SereďTrnava Region
    9.4
  19. 18NitraNitra Region
    9.4
  20. 18Devínska Nová VesBratislava Region
    9.4
  21. 21TrnavaTrnava Region
    9.3
  22. 22MalackyBratislava Region
    9.0
  23. 23SninaPrešov Region
    8.9
  24. 23PartizánskeTrenčín Region
    8.9
  25. 23Liptovský Mikulᚎilina Region
    8.9
  26. 26Žiar nad HronomBanská Bystrica Region
    8.7
  27. 26KomárnoNitra Region
    8.7
  28. 28PopradPrešov Region
    8.6
  29. 28PrievidzaTrenčín Region
    8.6
  30. 30HandlováTrenčín Region
    8.5
  31. 31Banská BystricaBanská Bystrica Region
    8.0
  32. 32SenecBratislava Region
    7.1
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, April 2025 · Slovakia now