Worst air pollution Estevan, today and tomorrow

On 9 August 2026, overall air quality in Estevan is fair. O3 is the main pollutant at 35.9/100. Pollution peaks around 12:00 AM (NO2: 42.3/100).

On 10 August 2026, air quality conditions in Estevan will be similar to today, with O3 forecast at fair at 27.6/100. Pollution peaks around 6:00 PM (NO2: 42.8/100).

Air quality in Estevan shifts noticeably across the seasons, shaped by its coal-fired power plants in the southeastern prairie. Cold winter days can trap local heating emissions close to the ground, while summer heat, farm dust and occasional wildfire smoke can push pollution higher than usual. The flat, exposed landscape means a stiff wind rarely takes long to disperse things.

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.