Worst air pollution Mayenne, today and tomorrow

On 25 August 2026, overall air quality in Mayenne is fair. AQI is the main air quality indicator at 33.8/100. Pollution peaks around 4:00 PM (O3: 33.8/100).

On 26 August 2026, air quality conditions in Mayenne will be similar to today, with AQI forecast at fair at 30.4/100. Pollution peaks around 1:00 AM (NO2: 30.4/100).

In Mayenne, the combination of river-port traffic and light industry and heavy oak and plane pollen in spring is what most affects sensitive groups; the Loire estuary and Atlantic winds ventilate the area, so poor conditions rarely last more than a couple of days. Nearby Loire valley and Vendee farmland add a further seasonal factor.

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.