SmogRank / Countries / Slovenia / December 2024

Most polluted cities in Slovenia, December 2024

8 cities in Slovenia ranked by their average PM2.5 over the 31 days. Worst: Celje at 32.3 µg/m³, #63 of 2,078 cities in the world. Cleanest: Koper at 13.7. A city needs measurements on 70% of the days to be ranked.

  1. 1CeljeUrban Municipality of Celje
    32.3
  2. 2LjubljanaLjubljana
    28.6
  3. 3KranjUrban Municipality of Kranj
    28.0
  4. 4PtujUrban Municipality of Ptuj
    27.5
  5. 5TrbovljeMunicipality of Trbovlje
    27.0
  6. 6Novo MestoUrban Municipality of Novo Mesto
    24.7
  7. 7MariborUrban Municipality of Maribor
    17.4
  8. 8KoperUrban Municipality of Koper
    13.7
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, December 2024 · Slovenia now

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SmogRank, most polluted cities in Slovenia, PM2.5, December 2024, smogrank.com/si/history/2024-12 (accessed 1 Oct 2026).

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