SmogRank / Countries / Finland / 2023
Most polluted cities in Finland, 2023
8 cities in Finland ranked by their average PM2.5 over the 365 days; 3 above the WHO annual guideline (5.0 µg/m³). Worst: Helsinki at 5.7 µg/m³, #859 of 969 cities in the world. Cleanest: Vaasa at 2.8. A city needs measurements on 70% of the days to be ranked.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+