SmogRank / Countries / Slovakia

Most polluted cities in Slovakia

31 measured cities, last 7 days; 0 above the WHO 24-hour guideline. Worst: Prešov at 9.8 µg/m³, #523 in the world.

23 good  8 moderate

  1. 1PrešovPrešov Region 9.8
  2. 2PúchovTrenčín Region 9.8
  3. 3ZvolenBanská Bystrica Region 9.6
  4. 4TrenčínTrenčín Region 9.5
  5. 5RužomberokŽilina Region 9.5
  6. 6HumennéPrešov Region 9.4
  7. 7MartinŽilina Region 9.4
  8. 8TrnavaTrnava Region 9.1
  9. 9SenecBratislava Region 8.9
  10. 10ČadcaŽilina Region 8.9
  11. 11NitraNitra Region 8.8
  12. 12Vranov nad TopľouPrešov Region 8.7
  13. 13SninaPrešov Region 8.6
  14. 14MalackyBratislava Region 8.6
  15. 15Liptovský Mikulᚎilina Region 8.6
  16. 16BratislavaBratislava Region 8.5
  17. 17TrebišovKošice Region 8.4
  18. 18SereďTrnava Region 8.4
  19. 19PezinokBratislava Region 8.4
  20. 20KošiceKošice Region 8.1
  21. 21BardejovPrešov Region 7.9
  22. 22PartizánskeTrenčín Region 7.8
  23. 23PrievidzaTrenčín Region 7.2
  24. 24ŽilinaŽilina Region 7.0
  25. 25Žiar nad HronomBanská Bystrica Region 6.8
  26. 26Devínska Nová VesBratislava Region 6.6
  27. 27SenicaTrnava Region 6.5
  28. 28KomárnoNitra Region 5.8
  29. 29PopradPrešov Region 5.7
  30. 30HandlováTrenčín Region 5.1
  31. 31Banská BystricaBanská Bystrica Region 4.8
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

Estimated: cities without a monitor

Slovakia cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Petržalka≈ 8 µg/m³Good
Považská Bystrica≈ 7 µg/m³Good
Nové Zámky≈ 8 µg/m³Good
Michalovce≈ 9 µg/m³Good
Karlova Ves≈ 8 µg/m³Good
Dúbravka≈ 8 µg/m³Good
Spišská Nová Ves≈ 6 µg/m³Good
Komárno≈ 8 µg/m³Good
Levice≈ 6 µg/m³Good
Piešťany≈ 8 µg/m³Good
Topoľčany≈ 9 µg/m³Good
Podunajské Biskupice≈ 7 µg/m³Good
Dunajská Streda≈ 9 µg/m³Good
Dubnica nad Váhom≈ 9 µg/m³Good
Rimavská Sobota≈ 6 µg/m³Good
Vrakuňa≈ 7 µg/m³Good
Šaľa≈ 8 µg/m³Good
Hlohovec≈ 8 µg/m³Good
Brezno≈ 6 µg/m³Good
Nové Mesto nad Váhom≈ 8 µg/m³Good
Dolný Kubín≈ 7 µg/m³Good
Rožňava≈ 7 µg/m³Good
Bánovce nad Bebravou≈ 8 µg/m³Good
Stará Ľubovňa≈ 8 µg/m³Good
Skalica≈ 7 µg/m³Good
Galanta≈ 9 µg/m³Good
Kežmarok≈ 8 µg/m³Good

Regions

Banská Bystrica Region 3Bratislava Region 5Košice Region 2Nitra Region 2Prešov Region 6Trenčín Region 4Trnava Region 3Žilina Region 5

Measured cities in each region (30 days).

Updated 2026-10-01 20:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.