What is the air quality in Alta?

Alta, Norway has an annual US AQI of 33 (Reasonable) and average PM2.5 of 2.4 µg/m³, ranking #87 of 5856 cities. Main pollutant: O3.

What is the cleanest month in Alta?

September is typically the cleanest month (AQI 28) and March the most polluted (AQI 38).

Where does Alta's air quality data come from?

PM2.5: 2022–2024 (model). From the Copernicus CAMS model, because no monitor or satellite value covers the city. Full sources are on the methodology page.

Alta, Norway — Air Quality & Clean City Guide 2026

Alta Air Quality Data

Global rank	City	Continent	AQI	PM2.5
87	Alta, Norway	Europe	AQI 33	PM2.5 2.4 µg/m³