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Heat warnings in effect across much of southern Ontario, humidex could be as high as 42 C

Click to play video: 'Concerns remain for vulnerable populations amid Ontario heat wave' Concerns remain for vulnerable populations amid Ontario heat wave
WATCH ABOVE: As heat warnings continue to be issued across the province, there are concerns about how vulnerable populations including children, seniors and homeless individuals will be impacted. Brittany Rosen reports. – Aug 25, 2021

There are heat warnings up across much of southern Ontario, spanning from Windsor to Ottawa and up to the Bruce Peninsula.

Environment Canada says temperatures could reach 33 C in some regions, while humidex values could be as high as 42.

At night, lows are only expected to hit between 20 and 22 C.

Read more: Greater Toronto Area under heat warning, ‘hot and humid’ conditions may extend into next week

Environment Canada says the heat is expected to continue through Thursday.

It says the high temperatures could also lead to degrading air quality, which could affect people’s health.

The agency says the risks are greater for young children, pregnant people, older adults, people with chronic illnesses and those working or exercising outdoors.

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