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Hotter than L.A.: Humid weather set to return to Toronto and southern Ontario

File photo of the Toronto skyline.
File photo of the Toronto skyline. Jeremy Cohn / File / Global News

As families prepare for the return of school this week and settle into new daily routines leading into the fall, hot and humid weather is set to return.

Environment Canada issued a heat warning Monday afternoon for most of southern Ontario. It said we can expect temperatures in the low 30s with humidex values reaching 40 to 42 C Tuesday and Wednesday.

The weather agency said the high temperatures may continue into Thursday in some regions.

By comparison, the U.S. National Weather Service is forecasting a high around 26 C in Los Angeles Tuesday.

Older adults and young children, as well as people suffering from chronic illness and those without access to air conditioning, are at greater risk of developing heat-related illness.

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READ MORE: Heat alert: How extreme heat affects the body

Environment Canada encouraged people to drink plenty of fluids, especially water, in order to prevent dehydration.

There is relief in the longer-term forecast. According to Environment Canada, we should see temperatures below 30 C starting on Friday.