Worst air pollution Bundeshaus - Bern, today and tomorrow

On 30 August 2026, overall air quality in Bundeshaus is moderate. AQI is the main air quality indicator at 41.7/100. Pollution peaks around 11:00 PM (NO2: 41.7/100).

On 31 August 2026, air quality conditions in Bundeshaus will be similar to today, with AQI forecast at moderate at 43.8/100. Pollution peaks around 12:00 AM (NO2: 43.8/100).

Calm winter conditions are when Bundeshaus' air quality suffers most, with vehicle traffic and administrative and commuter activity settling into the valley instead of clearing with the wind as usual. Once spring arrives, dispersion improves steadily along the valley floor, and summer stays largely clear except during rare heatwaves; autumn tends to be comparatively mild.

It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.

Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.

During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.