Worst air pollution Dolbeau-Mistassini, today and tomorrow

On 9 August 2026, overall air quality in Dolbeau-Mistassini is fair. AQI is the main air quality indicator at 29.8/100. Pollution peaks around 1:00 PM (O3: 29.8/100).

On 10 August 2026, air quality conditions in Dolbeau-Mistassini will be similar to today, with AQI forecast at fair at 28.8/100. Pollution peaks around 12:00 PM (O3: 28.8/100).

Dolbeau-Mistassini's air quality is closely linked to its pulp-and-paper mill in the Lac-Saint-Jean forest region. For much of the year the air is clean and forest-fresh, but summer and early autumn carry real risk of smoke episodes when wildfires burn nearby or further north. Wind direction across the river determines how much of the industrial output drifts into town on any given day.

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.