SmogRank / Countries / Slovakia

Most polluted cities in Slovakia

21 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Trenčín at 14.8 µg/m³, #133 in the world.

4 good  17 moderate

  1. 1TrenčínTrenčín Region 14.81.0×
  2. 2RužomberokŽilina Region 14.61.0×
  3. 3ZvolenBanská Bystrica Region 13.50.9×
  4. 4Vranov nad TopľouPrešov Region 13.10.9×
  5. 5MalackyBratislava Region 12.90.9×
  6. 6MartinŽilina Region 12.60.8×
  7. 7KošiceKošice Region 12.40.8×
  8. 8HumennéPrešov Region 12.40.8×
  9. 9Liptovský Mikulᚎilina Region 12.40.8×
  10. 10NitraNitra Region 12.00.8×
  11. 11BratislavaBratislava Region 11.60.8×
  12. 12ŽilinaŽilina Region 11.50.8×
  13. 13SereďTrnava Region 11.20.7×
  14. 14BardejovPrešov Region 9.80.7×
  15. 15Žiar nad HronomBanská Bystrica Region 9.60.6×
  16. 16PartizánskeTrenčín Region 9.60.6×
  17. 17Devínska Nová VesBratislava Region 9.10.6×
  18. 18SninaPrešov Region 7.60.5×
  19. 19KomárnoNitra Region 7.40.5×
  20. 20HandlováTrenčín Region 6.40.4×
  21. 21Banská BystricaBanská Bystrica Region 6.40.4×
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 23:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.