SmogRank / World / Norway / March 2026

Most polluted cities in Norway, March 2026

14 cities in Norway ranked by their average PM2.5 over the 31 days. Worst: Porsgrunn at 14.0 µg/m³, #901 of 2,616 cities in the world. Cleanest: Bodø at 4.8. A city needs measurements on 70% of the days to be ranked.

← Porsgrunn 14.0
Every city in Norway ranked for March 2026, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1PorsgrunnTelemark
    60
  2. 2FredrikstadØstfold
    57
  3. 3MossØstfold
    56
  4. 4SarpsborgØstfold
    55
  5. 5DrammenBuskerud
    53
  6. 6NesttunVestland
    52
  7. 7BergenVestland
    52
  8. 8LillehammerInnlandet
    51
  9. 9OsloOslo
    49
  10. 10ÅsaneVestland
    45
  11. 11GjøvikInnlandet
    36
  12. 12TrondheimTrøndelag
    32
  13. 13Mo i RanaNordland
    27
  14. 14BodøNordland
    27
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, March 2026 · Norway now

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SmogRank, most polluted cities in Norway, PM2.5, March 2026, smogrank.com/no/history/2026-03 (accessed 2 Oct 2026).

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