SmogRank / Countries / Finland / North Ostrobothnia
Most polluted cities in North Ostrobothnia, Finland
1 measured city ranked by PM2.5, last 30 days. Worst: Oulu at 3.3 µg/m³, #2238 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Oulu North Ostrobothnia | 3.3 |
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
North Ostrobothnia 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 |
|---|---|
| Raahe estimated | ≈ 4 µg/m³ |
| Haukipudas estimated | ≈ 4 µg/m³ |
| Ylivieska estimated | ≈ 3 µg/m³ |
Updated 2026-10-01 12:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.