Most polluted cities in Norway
0 measured cities ranked by PM2.5, last 7 days.
No city has enough measurements for this window yet.
Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data
Estimated: cities without a monitor
Norway cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Stavanger estimated | ≈ 7 µg/m³ |
| Sandnes estimated | ≈ 7 µg/m³ |
| Sandefjord estimated | ≈ 5 µg/m³ |
| Asker estimated | ≈ 6 µg/m³ |
| Tønsberg estimated | ≈ 5 µg/m³ |
| Ålesund estimated | ≈ 3 µg/m³ |
| Skien estimated | ≈ 4 µg/m³ |
| Tromsø estimated | ≈ 3 µg/m³ |
| Haugesund estimated | ≈ 6 µg/m³ |
| Arendal estimated | ≈ 6 µg/m³ |
| Sola estimated | ≈ 7 µg/m³ |
| Hamar estimated | ≈ 4 µg/m³ |
| Horten estimated | ≈ 5 µg/m³ |
| Grimstad estimated | ≈ 5 µg/m³ |
| Kristiansund estimated | ≈ 4 µg/m³ |
| Larvik estimated | ≈ 4 µg/m³ |
| Molde estimated | ≈ 3 µg/m³ |
| Halden estimated | ≈ 4 µg/m³ |
| Harstad estimated | ≈ 3 µg/m³ |
| Levanger estimated | ≈ 3 µg/m³ |
| Time estimated | ≈ 7 µg/m³ |
| Tromsdalen estimated | ≈ 2 µg/m³ |
| Kongsberg estimated | ≈ 3 µg/m³ |
| Stjørdalshalsen estimated | ≈ 3 µg/m³ |
| Alta estimated | ≈ 1 µg/m³ |
Updated 2026-10-01 10:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.