Heat warnings in effect for some regions in southern Ontario

Click to play video: 'Environment Canada issues heat warning for Toronto'
Environment Canada issues heat warning for Toronto
WATCH ABOVE: Toronto is under a heat warning. The city could see temperatures as high as 34 C. As Erica Vella reports, the city is opening up cooling centres to help – Jul 5, 2021

TORONTO — Environment Canada has issued heat warnings for parts of southern Ontario as temperatures soar.

The warnings stretch from the Windsor area through Toronto and east to Durham Region.

The agency says Monday’s daytime temperatures are expected to go as high as 34 degrees Celsius.

Read more: Heat warning issued for Greater Toronto Area with humidex near 40 expected

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Overnight temperatures are forecast to be lower at 21 to 25 degrees Celsius.

The agency says a cold front is expected to move in on Tuesday evening, bringing showers and thunderstorms to the area.

Heat warnings are also in effect for a portion of northeastern Ontario, including the city of Timmins.

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The City of Toronto opened eight cooling centres in response to the heat warning.

Environment Canada says the risks of extreme heat are greatest for young children, pregnant people, seniors, people with chronic illnesses and those working or exercising outdoors.

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