SmogRank / Countries / Norway / August 2025

Most polluted cities in Norway, August 2025

14 cities in Norway ranked by their average PM2.5 over the 31 days. Worst: Sarpsborg at 6.3 µg/m³, #1,926 of 2,289 cities in the world. Cleanest: Bodø at 3.1. A city needs measurements on 70% of the days to be ranked.

  1. 1SarpsborgØstfold
    6.3
  2. 2PorsgrunnTelemark
    5.7
  3. 3MossØstfold
    5.6
  4. 4FredrikstadØstfold
    5.0
  5. 5OsloOslo
    4.7
  6. 6NesttunVestland
    4.4
  7. 7BergenVestland
    4.2
  8. 8Mo i RanaNordland
    4.1
  9. 9DrammenBuskerud
    4.0
  10. 10TrondheimTrøndelag
    3.7
  11. 10LillehammerInnlandet
    3.7
  12. 10ÅsaneVestland
    3.7
  13. 13GjøvikInnlandet
    3.5
  14. 14BodøNordland
    3.1
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 2025 · Norway now

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SmogRank, most polluted cities in Norway, PM2.5, August 2025, smogrank.com/no/history/2025-08 (accessed 2 Oct 2026).

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