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
    20
  2. 2FredrikstadØstfold
    18
  3. 3MossØstfold
    17
  4. 4SarpsborgØstfold
    17
  5. 5DrammenBuskerud
    15
  6. 6NesttunVestland
    14
  7. 7BergenVestland
    14
  8. 8LillehammerInnlandet
    13
  9. 9OsloOslo
    13
  10. 10ÅsaneVestland
    12
  11. 11GjøvikInnlandet
    10
  12. 12TrondheimTrøndelag
    9
  13. 13Mo i RanaNordland
    7
  14. 14BodøNordland
    7
Excellent0–50
Good51–100
Lightly polluted101–150
Moderately polluted151–200
Heavily polluted201–300
Severely polluted301+

China's Air Quality Index (HJ 633-2012), PM2.5 individual index. 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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