SmogRank / World / Slovakia / September 2026

Most polluted cities in Slovakia, September 2026

30 cities in Slovakia ranked by their average PM2.5 over the 30 days. Worst: Trebišov at 8.1 µg/m³, #916 of 2,646 cities in the world. Cleanest: Banská Bystrica at 4.5. A city needs measurements on 70% of the days to be ranked.

← Trebišov 8.1
Every city in Slovakia ranked for September 2026, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1TrebišovKošice Region
    13
  2. 2PrešovPrešov Region
    13
  3. 2SenecBratislava Region
    13
  4. 4Vranov nad TopľouPrešov Region
    13
  5. 5KošiceKošice Region
    13
  6. 5HumennéPrešov Region
    13
  7. 7PúchovTrenčín Region
    13
  8. 7NitraNitra Region
    13
  9. 9SninaPrešov Region
    13
  10. 9TrnavaTrnava Region
    13
  11. 11TrenčínTrenčín Region
    13
  12. 11SereďTrnava Region
    13
  13. 11RužomberokŽilina Region
    13
  14. 11MalackyBratislava Region
    13
  15. 15BardejovPrešov Region
    12
  16. 16BratislavaBratislava Region
    12
  17. 17PartizánskeTrenčín Region
    12
  18. 17MartinŽilina Region
    12
  19. 19ZvolenBanská Bystrica Region
    12
  20. 19PezinokBratislava Region
    12
  21. 19Liptovský Mikulᚎilina Region
    12
  22. 22ČadcaŽilina Region
    12
  23. 23PrievidzaTrenčín Region
    12
  24. 24Žiar nad HronomBanská Bystrica Region
    10
  25. 24SenicaTrnava Region
    10
  26. 26ŽilinaŽilina Region
    10
  27. 27KomárnoNitra Region
    10
  28. 28PopradPrešov Region
    10
  29. 29Devínska Nová VesBratislava Region
    8
  30. 30Banská BystricaBanská Bystrica Region
    8
Good0–50
Satisfactory51–100
Moderate101–200
Poor201–300
Very poor301–400
Severe401+

India's National Air Quality Index (CPCB), PM2.5 sub-index. 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, September 2026, smogrank.com/sk/history/2026-09 (accessed 2 Oct 2026).

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