SmogRank / World / Slovakia / September 2023

Most polluted cities in Slovakia, September 2023

22 cities in Slovakia ranked by their average PM2.5 over the 30 days. Worst: Trnava at 13.8 µg/m³, #146 of 1,830 cities in the world. Cleanest: Handlová at 7.7. A city needs measurements on 70% of the days to be ranked.

← Trnava 13.8 µg/m³ 20 µg/m³0
Every city in Slovakia ranked for September 2023, 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. 1TrnavaTrnava Region
    13.8
  2. 2MartinŽilina Region
    12.8
  3. 3PrešovPrešov Region
    12.3
  4. 4SenicaTrnava Region
    11.9
  5. 5NitraNitra Region
    11.7
  6. 6KošiceKošice Region
    11.4
  7. 7HumennéPrešov Region
    10.9
  8. 8ŽilinaŽilina Region
    10.8
  9. 9BratislavaBratislava Region
    10.2
  10. 10PrievidzaTrenčín Region
    10.0
  11. 11Vranov nad TopľouPrešov Region
    9.9
  12. 11Spišská Nová VesKošice Region
    9.9
  13. 11ZvolenBanská Bystrica Region
    9.9
  14. 14Žiar nad HronomBanská Bystrica Region
    9.8
  15. 15PartizánskeTrenčín Region
    9.3
  16. 16SninaPrešov Region
    9.0
  17. 16RužomberokŽilina Region
    9.0
  18. 18TrenčínTrenčín Region
    8.8
  19. 19Karlova VesBratislava Region
    8.4
  20. 19Banská BystricaBanská Bystrica Region
    8.4
  21. 21PopradPrešov Region
    8.2
  22. 22HandlováTrenčín Region
    7.7
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, September 2023 · Slovakia now

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SmogRank, most polluted cities in Slovakia, PM2.5, September 2023, smogrank.com/sk/history/2023-09 (accessed 2 Oct 2026).

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