SmogRank / World / Slovakia / January 2023

Most polluted cities in Slovakia, January 2023

16 cities in Slovakia ranked by their average PM2.5 over the 31 days. Worst: Ružomberok at 22.6 µg/m³, #64 of 849 cities in the world. Cleanest: Poprad at 6.8. A city needs measurements on 70% of the days to be ranked.

← Ružomberok 22.6
Every city in Slovakia ranked for January 2023, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1RužomberokŽilina Region
    3
  2. 2Spišská Nová VesKošice Region
    3
  3. 3ŽilinaŽilina Region
    2
  4. 4ZvolenBanská Bystrica Region
    2
  5. 5MartinŽilina Region
    2
  6. 6HumennéPrešov Region
    2
  7. 6SenicaTrnava Region
    2
  8. 8PrievidzaTrenčín Region
    2
  9. 9Banská BystricaBanská Bystrica Region
    2
  10. 10NitraNitra Region
    2
  11. 11TrenčínTrenčín Region
    2
  12. 12TrnavaTrnava Region
    2
  13. 13PartizánskeTrenčín Region
    2
  14. 14BratislavaBratislava Region
    2
  15. 15SninaPrešov Region
    1
  16. 16PopradPrešov Region
    1
Low risk1–3
Moderate risk4–6
High risk7–10
Very high risk10+

Canada's AQHI+ for PM2.5 (1 point per 10 µg/m³), which is defined on hourly values. 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, January 2023 · Slovakia now

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SmogRank, most polluted cities in Slovakia, PM2.5, January 2023, smogrank.com/sk/history/2023-01 (accessed 2 Oct 2026).

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