Montreal is bracing for another blast of intense summer heat this week, with humidex values expected to push the temperature dangerously high across the region.
Starting Tuesday, July 16, and continuing through Wednesday, July 17, daytime highs are forecast to range between 31°C and 33°C (88°F to 91°F). But with the humidity, it could feel closer to 40°C (104°F), making outdoor conditions oppressive and potentially hazardous for vulnerable groups.
The heat warning from Environment Canada applies to Greater Montreal, Lachute, Lanaudière, Montérégie, and Drummondville—areas where the combination of temperature and humidity is expected to reach dangerously high levels.
Authorities are urging residents to stay alert for signs of heat-related illness, including headaches, nausea, dizziness, extreme fatigue, intense thirst, and dark-coloured urine—all of which can be signs of heat stroke.
Staying hydrated throughout the day, even before feeling thirsty, can make a real difference. Keeping blinds closed during peak sun hours, using fans or air conditioning, and heading to cooling centres, community hubs, or public libraries can help manage the unrelenting heat.
Montrealers are once again being reminded: this heat is no joke—and it’s not going anywhere for the next couple of days.
