SmogRank / Countries / Finland
Most polluted cities in Finland
12 measured cities ranked by PM2.5, last 30 days. Worst: Helsinki at 4.1 µg/m³, #2100 in the world.
| # | City | µg/m³ | |
|---|---|---|---|
| 1 | Helsinki Uusimaa | 4.1 | |
| 2 | Myyrmäki Uusimaa | 4.1 | |
| 3 | Lappeenranta South Karelia | 3.9 | |
| 4 | Vantaa Uusimaa | 3.7 | |
| 5 | Lohja Uusimaa | 3.7 | |
| 6 | Pori Satakunta | 3.4 | |
| 7 | Oulu North Ostrobothnia | 3.3 | |
| 8 | Lahti Paijat-Hame | 3.1 | |
| 9 | Klaukkala Uusimaa | 3.0 | |
| 10 | Tampere Pirkanmaa | 2.9 | |
| 11 | Jyväskylä Central Finland | 2.7 | |
| 12 | Kuopio North Savo | 2.5 |
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
Finland 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 |
|---|---|
| Espoo estimated | ≈ 4 µg/m³ |
| Turku estimated | ≈ 4 µg/m³ |
| Joensuu estimated | ≈ 3 µg/m³ |
| Kouvola estimated | ≈ 3 µg/m³ |
| Vaasa estimated | ≈ 4 µg/m³ |
| Hämeenlinna estimated | ≈ 3 µg/m³ |
| Seinäjoki estimated | ≈ 3 µg/m³ |
| Rovaniemi estimated | ≈ 2 µg/m³ |
| Porvoo estimated | ≈ 3 µg/m³ |
| Mikkeli estimated | ≈ 3 µg/m³ |
| Salo estimated | ≈ 4 µg/m³ |
| Kotka estimated | ≈ 3 µg/m³ |
| Kokkola estimated | ≈ 3 µg/m³ |
| Järvenpää estimated | ≈ 4 µg/m³ |
| Nurmijärvi estimated | ≈ 4 µg/m³ |
| Hyvinge estimated | ≈ 3 µg/m³ |
| Tuusula estimated | ≈ 4 µg/m³ |
| Kirkkonummi estimated | ≈ 4 µg/m³ |
| Rauma estimated | ≈ 3 µg/m³ |
| Kerava estimated | ≈ 4 µg/m³ |
| Kaarina estimated | ≈ 4 µg/m³ |
| Nokia estimated | ≈ 3 µg/m³ |
| Kajaani estimated | ≈ 2 µg/m³ |
| Kangasala estimated | ≈ 3 µg/m³ |
| Ylöjärvi estimated | ≈ 3 µg/m³ |
| Savonlinna estimated | ≈ 2 µg/m³ |
| Vihti estimated | ≈ 4 µg/m³ |
| Riihimäki estimated | ≈ 3 µg/m³ |
| Raseborg estimated | ≈ 4 µg/m³ |
| Raisio estimated | ≈ 4 µg/m³ |
| Lempäälä estimated | ≈ 3 µg/m³ |
| Imatra estimated | ≈ 3 µg/m³ |
| Sastamala estimated | ≈ 3 µg/m³ |
| Raahe estimated | ≈ 4 µg/m³ |
| Sibbo estimated | ≈ 4 µg/m³ |
| Karhula estimated | ≈ 3 µg/m³ |
| Hollola estimated | ≈ 3 µg/m³ |
| Siilinjärvi estimated | ≈ 3 µg/m³ |
| Pirkkala estimated | ≈ 3 µg/m³ |
| Mäntsälä estimated | ≈ 3 µg/m³ |
Regions
Central Finland 1North Ostrobothnia 1North Savo 1Paijat-Hame 1Pirkanmaa 1Satakunta 1South Karelia 1Uusimaa 5
Updated 2026-10-01 08:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.