SmogRank / Countries / Norway / April 2025

Most polluted cities in Norway, April 2025

17 cities in Norway ranked by their average PM2.5 over the 30 days. Worst: Lillestrøm at 9.5 µg/m³, #955 of 2,286 cities in the world. Cleanest: Åsane at 3.7. A city needs measurements on 70% of the days to be ranked.

  1. 1LillestrømAkershus
    9.5
  2. 2HamarInnlandet
    9.2
  3. 3SarpsborgØstfold
    6.4
  4. 4KristiansandAgder
    6.1
  5. 5MossØstfold
    6.0
  6. 6PorsgrunnTelemark
    5.9
  7. 7OsloOslo
    5.8
  8. 8FredrikstadØstfold
    5.7
  9. 9DrammenBuskerud
    5.5
  10. 10LillehammerInnlandet
    5.3
  11. 11NesttunVestland
    5.2
  12. 12TrondheimTrøndelag
    4.8
  13. 13BergenVestland
    4.7
  14. 14Mo i RanaNordland
    4.6
  15. 15GjøvikInnlandet
    4.5
  16. 16BodøNordland
    3.7
  17. 16ÅsaneVestland
    3.7
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, April 2025 · Norway now

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SmogRank, most polluted cities in Norway, PM2.5, April 2025, smogrank.com/no/history/2025-04 (accessed 2 Oct 2026).

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