Worst air pollution Saint Paul, today and tomorrow

On 30 August 2026, overall air quality in Saint Paul is good. AQI is the main air quality indicator at 18.3/100. Pollution peaks around 11:00 AM (O3: 18.3/100).

On 31 August 2026, air quality conditions in Saint Paul will be worse than today, with AQI forecast at fair at 22.5/100. Pollution peaks around 10:00 AM (O3: 22.5/100).

The colder months typically bring the heaviest particulate levels of the year to this area, as cold, stagnant air traps heating and traffic emissions close to street level through the winter. As the weather warms, ozone typically overtakes particulate matter as the top concern here, with summer's combination of heat, sun, and dense traffic driving some of the year's highest ozone readings.

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.