What is the air quality in Lausanne?

Lausanne, Switzerland has an annual US AQI of 57 (Reasonable) and average PM2.5 of 12.2 µg/m³, ranking #1555 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Lausanne?

September is typically the cleanest month (AQI 49) and January the most polluted (AQI 65).

Where does Lausanne's air quality data come from?

PM2.5: 1998–2026 (satellite 1998–2024, model 2025–2026). From satellite data, because no government monitor covers the city. Full sources are on the methodology page.

Lausanne, Switzerland — Air Quality & Clean City Guide 2026

Lausanne Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1555	Lausanne, Switzerland	Europe	AQI 57	PM2.5 12.2 µg/m³