What is the air quality in Oslo?

Oslo, Norway has an annual US AQI of 46 (Reasonable) and average PM2.5 of 9 µg/m³, ranking #531 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Oslo?

August is typically the cleanest month (AQI 35) and January the most polluted (AQI 60).

Where does Oslo's air quality data come from?

PM2.5: 1998–2026 (monitors 2013–2026, satellite 1998–2012, 2014, 2018; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Oslo, Norway — Air Quality & Clean City Guide 2026

Oslo Air Quality Data

Global rank	City	Continent	AQI	PM2.5
531	Oslo, Norway	Europe	AQI 46	PM2.5 9 µg/m³