Worst air pollution Mount Pleasant, Michigan, today and tomorrow

On 20 September 2026, overall air quality in Mount Pleasant, Michigan is fair. AQI is the main air quality indicator at 27.3/100. Pollution peaks around 4:00 PM (NO2: 27.3/100).

On 21 September 2026, air quality conditions in Mount Pleasant, Michigan will be similar to today, with AQI forecast at fair at 37.8/100. Pollution peaks around 4:00 PM (NO2: 37.8/100).

Mount Pleasant follows a fairly predictable seasonal air quality pattern. In short, the mildest, cleanest weather usually falls in spring and autumn, whereas summer heat waves are the main driver of poor air quality, as ozone builds under stagnant, humid conditions. Lake-effect winds can help clear the air on many days near the Great Lakes shoreline.

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.