Environment Canada has issued heat warnings across four provinces—Saskatchewan, Manitoba, Ontario, and Quebec—as dangerously high temperatures and humidity are expected.The warning areas include southern and central Manitoba, most of Ontario, and parts of Saskatchewan and Quebec.Temperatures are projected to reach mid-40s Celsius, with humidity creating oppressive conditions.Heat exhaustion and health risks are highlighted, particularly for vulnerable populations.The orange alerts indicate conditions likely to cause significant disruption, while yellow alerts suggest potential for health impacts.Thunder Bay, Ontario, is forecasted to hit 38°C, with record temperatures already breaking in Manitoba.

The heatwave coincides with deteriorating air quality due to wildfire smoke, prompting authorities to recommend cooling centers, hydration, and avoiding peak heat hours.Environment Canada urges residents to monitor for signs of heat exhaustion and to seek medical help for heat stroke.Municipalities like Toronto and Winnipeg are opening public cooling spaces, while the city of Toronto emphasizes water stations and shaded areas.The situation underscores ongoing climate challenges, with experts linking the extreme weather to broader climate trends.