SmogRank / Countries / Slovenia / August 2026

Most polluted cities in Slovenia, August 2026

8 cities in Slovenia ranked by their average PM2.5 over the 31 days. Worst: Ljubljana at 8.4 µg/m³, #1,047 of 2,312 cities in the world. Cleanest: Trbovlje at 7.1. A city needs measurements on 70% of the days to be ranked.

  1. 1LjubljanaLjubljana
    8.4
  2. 2PtujUrban Municipality of Ptuj
    8.2
  3. 3KranjUrban Municipality of Kranj
    7.8
  4. 4CeljeUrban Municipality of Celje
    7.7
  5. 5KoperUrban Municipality of Koper
    7.6
  6. 6MariborUrban Municipality of Maribor
    7.3
  7. 7Novo MestoUrban Municipality of Novo Mesto
    7.2
  8. 8TrbovljeMunicipality of Trbovlje
    7.1
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, August 2026 · Slovenia now