SmogRank / Cleaner or dirtier / Finland
Finland: cleaner or dirtier, 2024
In Finland, 10 cities have enough days in both years to compare 2024 with the same days of 2023: 0 got dirtier and 7 cleaner.
The 7 cities that got cleaner, biggest fall first
| # | City | 2023 | 2024 | Change |
|---|---|---|---|---|
| 1 | LappeenrantaSouth Karelia, Finland | 29 | 27 | −0.4 µg/m³−8% |
| 2 | VantaaUusimaa, Finland | 32 | 30 | −0.4 µg/m³−7% |
| 3 | KallahtiUusimaa, Finland | 27 | 26 | −0.3 µg/m³−6% |
| 4 | TamperePirkanmaa, Finland | 24 | 22 | −0.3 µg/m³−7% |
| 5 | LaaksolahtiUusimaa, Finland | 32 | 31 | −0.2 µg/m³−4% |
| 6 | HelsinkiUusimaa, Finland | 33 | 32 | −0.2 µg/m³−3% |
| 7 | MyyrmäkiUusimaa, Finland | 32 | 31 | −0.1 µg/m³−2% |
Means in US AQI over the days a city was measured in both years, the same calendar days each year; a city needs 55% of the days paired, and at least 30. The change is in µg/m³ and per cent. How we compare.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Updated 2026-10-07 12:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.