SmogRank / Countries / Slovenia / March 2026

Most polluted cities in Slovenia, March 2026

8 cities in Slovenia ranked by their average PM2.5 over the 31 days. Worst: Ptuj at 16.0 µg/m³, #443 of 2,332 cities in the world. Cleanest: Maribor at 11.8. A city needs measurements on 70% of the days to be ranked.

  1. 1PtujUrban Municipality of Ptuj
    16.0
  2. 2CeljeUrban Municipality of Celje
    15.8
  3. 3LjubljanaLjubljana
    13.1
  4. 4Novo MestoUrban Municipality of Novo Mesto
    13.0
  5. 5TrbovljeMunicipality of Trbovlje
    12.5
  6. 5KoperUrban Municipality of Koper
    12.5
  7. 7KranjUrban Municipality of Kranj
    12.2
  8. 8MariborUrban Municipality of Maribor
    11.8
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, March 2026 · Slovenia now