SmogRank / Countries / Slovakia / June 2026

Most polluted cities in Slovakia, June 2026

28 cities in Slovakia ranked by their average PM2.5 over the 30 days. Worst: Prešov at 14.8 µg/m³, #211 of 1,918 cities in the world. Cleanest: Devínska Nová Ves at 5.3. A city needs measurements on 70% of the days to be ranked.

  1. 1PrešovPrešov Region
    14.8
  2. 2KošiceKošice Region
    13.8
  3. 3HumennéPrešov Region
    13.7
  4. 4ZvolenBanská Bystrica Region
    13.3
  5. 5Vranov nad TopľouPrešov Region
    13.2
  6. 6TrebišovKošice Region
    12.8
  7. 6BardejovPrešov Region
    12.8
  8. 6KomárnoNitra Region
    12.8
  9. 9SereďTrnava Region
    12.6
  10. 9NitraNitra Region
    12.6
  11. 9MartinŽilina Region
    12.6
  12. 12SninaPrešov Region
    12.5
  13. 13PopradPrešov Region
    12.3
  14. 14RužomberokŽilina Region
    12.1
  15. 15PúchovTrenčín Region
    11.9
  16. 16ŽilinaŽilina Region
    11.8
  17. 17SenecBratislava Region
    11.7
  18. 17PrievidzaTrenčín Region
    11.7
  19. 19Liptovský Mikulᚎilina Region
    11.6
  20. 20LučenecBanská Bystrica Region
    11.5
  21. 21SenicaTrnava Region
    11.4
  22. 22TrnavaTrnava Region
    10.7
  23. 23PezinokBratislava Region
    10.4
  24. 24BratislavaBratislava Region
    10.3
  25. 25ČadcaŽilina Region
    9.2
  26. 26Žiar nad HronomBanská Bystrica Region
    9.1
  27. 27PartizánskeTrenčín Region
    8.4
  28. 28Devínska Nová VesBratislava Region
    5.3
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, June 2026 · Slovakia now