Active AlertsAréna André Saint-Laurent, QC

Smog Warning
Issued at Tue 9:59 PM Jun. 6
Issued by: Environment and Climate Change Canada

High concentrations of fine particulate matter from forest fires in Quebec will give poor air quality in many areas overnight tonight and tomorrow. These conditions may persist for a few more days.


Smog especially affects asthmatic children and people with respiratory ailments or heart disease. It is therefore recommended that these individuals avoid intense physical activity outdoors until the smog warning is lifted.

Additional information:

To learn more about the Info-Smog program, go to Environment Canada’s website at

For air quality indexes in Quebec, visit the website of the Ministère de l'Environnement et de la Lutte contre les changements climatiques at

For the air quality index in Montréal, visit the Réseau de surveillance de la qualité de l’air de la Ville de Montréal’s website at (french only).

To learn more about the effects of smog on your health in Québec, visit the Ministère de la Santé et des Services sociaux’s website at You can also visit the Direction régionale de santé publique de Montréal at

Please continue to monitor alerts and forecasts issued by Environment Canada.