What is the air quality in Oulu?

Oulu, Finland has an annual US AQI of 33 (Reasonable) and average PM2.5 of 5.4 µg/m³, ranking #96 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Oulu?

October is typically the cleanest month (AQI 26) and April the most polluted (AQI 39).

Where does Oulu's air quality data come from?

PM2.5: 1998–2026 (monitors 2022–2026, satellite 1998–2021; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Oulu, Finland — Air Quality & Clean City Guide 2026

Oulu Air Quality Data

Global rank	City	Continent	AQI	PM2.5
96	Oulu, Finland	Europe	AQI 33	PM2.5 5.4 µg/m³