SmogRank / Countries / Slovakia / May 2026

Most polluted cities in Slovakia, May 2026

32 cities in Slovakia ranked by their average PM2.5 over the 31 days. Worst: Púchov at 15.9 µg/m³, #226 of 2,243 cities in the world. Cleanest: Banská Bystrica at 5.1. A city needs measurements on 70% of the days to be ranked.

  1. 1PúchovTrenčín Region
    15.9
  2. 2PrešovPrešov Region
    11.0
  3. 2HumennéPrešov Region
    11.0
  4. 4TrenčínTrenčín Region
    10.7
  5. 5KošiceKošice Region
    10.2
  6. 6MartinŽilina Region
    9.8
  7. 6KomárnoNitra Region
    9.8
  8. 8ZvolenBanská Bystrica Region
    9.6
  9. 9TrebišovKošice Region
    9.5
  10. 10SninaPrešov Region
    9.4
  11. 10BardejovPrešov Region
    9.4
  12. 12NitraNitra Region
    9.3
  13. 13Vranov nad TopľouPrešov Region
    9.0
  14. 14SenecBratislava Region
    8.9
  15. 15RužomberokŽilina Region
    8.8
  16. 16LučenecBanská Bystrica Region
    8.7
  17. 17SenicaTrnava Region
    8.5
  18. 18PopradPrešov Region
    8.4
  19. 19ŽilinaŽilina Region
    8.3
  20. 19MalackyBratislava Region
    8.3
  21. 21SereďTrnava Region
    8.2
  22. 22Liptovský Mikulᚎilina Region
    8.1
  23. 23PrievidzaTrenčín Region
    7.7
  24. 24PezinokBratislava Region
    7.6
  25. 24ČadcaŽilina Region
    7.6
  26. 24BratislavaBratislava Region
    7.6
  27. 27Žiar nad HronomBanská Bystrica Region
    7.3
  28. 27TrnavaTrnava Region
    7.3
  29. 29PartizánskeTrenčín Region
    7.0
  30. 30HandlováTrenčín Region
    6.1
  31. 31Devínska Nová VesBratislava Region
    6.0
  32. 32Banská BystricaBanská Bystrica Region
    5.1
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, May 2026 · Slovakia now