Air quality and extreme heat advisory in southern Quebec
An Environment Canada advisory issued Saturday morning recommends limiting time spent outdoors.
'During periods of dense smoke, everyone is at risk, regardless of age or health,' said the advisory, which covers southern Quebec, including the Greater Montreal area, as well as the Estrie, Lanaudière, Mauricie, and Centre-du-Québec regions.
Air quality could remain poor until Sunday.
People with existing health conditions, seniors, pregnant women, infants, and young children should avoid strenuous outdoor activities on Saturday and Sunday.
Wearing an N95 respirator mask can reduce exposure to fine particles in smoke. Consider protecting indoor air quality during episodes of poor air quality, particularly with a clean, high-quality air filter in your ventilation system.
Heat warnings are also in effect in southern Quebec for Sunday, Monday, and Tuesday, particularly in Montreal, Laval, parts of the Laurentians, and the Montérégie region.
'The combination of maximum temperatures above 30 degrees Celsius and high humidity will bring humidex values close to 40 degrees on Sunday afternoon. Conditions will remain hot and humid until Tuesday, with nights being particularly uncomfortable with minimum temperatures remaining above 20 degrees Celsius,' said Environment and Climate Change Canada.
Extreme heat can affect your health. It is recommended that you check on people who live alone and seniors during periods of extreme heat.
In particular, watch for the first signs of heat exhaustion, such as headaches and dizziness, to avoid heat stroke.
'During extreme heat and poor air quality, the priority is to stay cool,' Environment Canada reminds us.
This report by The Canadian Press was first published in French on July 26, 2025.
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