SmogRank / Countries / Slovenia / June 2025

Most polluted cities in Slovenia, June 2025

8 cities in Slovenia ranked by their average PM2.5 over the 30 days. Worst: Kranj at 13.2 µg/m³, #377 of 1,912 cities in the world. Cleanest: Novo Mesto at 10.1. A city needs measurements on 70% of the days to be ranked.

  1. 1KranjUrban Municipality of Kranj
    13.2
  2. 2LjubljanaLjubljana
    12.3
  3. 3CeljeUrban Municipality of Celje
    11.0
  4. 4KoperUrban Municipality of Koper
    10.8
  5. 5PtujUrban Municipality of Ptuj
    10.7
  6. 6MariborUrban Municipality of Maribor
    10.6
  7. 7TrbovljeMunicipality of Trbovlje
    10.4
  8. 8Novo MestoUrban Municipality of Novo Mesto
    10.1
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, June 2025 · Slovenia now