Heat Wave Alert: Environment Canada Warns Ontario and Quebec Residents of Extreme Temperatures

TORONTO — A heat wave is gripping parts of Ontario and Quebec. Environment Canada has issued heat warnings for southern Ontario and western Quebec, starting this weekend.

Temperatures in areas like Windsor could soar between 31°C to 36°C. With humidity, it might feel like 40°C to 50°C! Toronto and eastern Ontario will also experience this heat, especially on Sunday.

Conditions are expected to remain hot until Tuesday, with cooler air possibly moving in later that day, though it’s unclear how far south it will reach. Quebec will also feel the impact, with daytime highs over 30°C and nighttime temperatures staying above 20°C. Monday and Tuesday will be the hottest, with humidity making it feel like 40°C to 45°C.

Experts recommend staying hydrated during these hot days. Drinking water frequently can help prevent heat-related illnesses. It’s important to recognize early signs of heat exhaustion, like dizziness or excessive sweating.

This summer is predicted to be hotter and more humid than usual. A recent study indicates that climate change is making heat waves more common in Canada. Research from the Canadian Centre for Climate Modelling and Analysis shows that the likelihood of such extreme weather events has increased due to human activities, particularly from burning fossil fuels.

As cities warm up, people are sharing their experiences online. Social media is flooded with tips on staying cool, from DIY air conditioning hacks to refreshing drink recipes. Users are also discussing their own struggles with the heat, making it a hot topic for everyone.

Preparedness is key. Knowing how to stay cool can make a big difference during these extreme weather conditions.

This report is based on the latest from The Canadian Press, first published on June 21, 2025. For detailed information about the effects of climate change, you can check the [Government of Canada Climate Change Report](https://www.canada.ca/en/services/environment/weather/climate-change.html).

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