What is the air quality in Helsinki Helsingfors?

Helsinki Helsingfors, Finland has an annual US AQI of 40 (Reasonable) and average PM2.5 of 7.1 µg/m³, ranking #260 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Helsinki Helsingfors?

October is typically the cleanest month (AQI 34) and February the most polluted (AQI 46).

Where does Helsinki Helsingfors's air quality data come from?

PM2.5: 1998–2026 (monitors 2001–2026, satellite 1998–2000; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Helsinki Helsingfors, Finland — Air Quality & Clean City Guide 2026

Helsinki Helsingfors Air Quality Data

Global rank	City	Continent	AQI	PM2.5
260	Helsinki Helsingfors, Finland	Europe	AQI 40	PM2.5 7.1 µg/m³