toronto weather

Toronto is now under a heat warning as temperatures soar above 30 C

Just two weeks after snow, freezing rain and bitter high winds whipped through Toronto, the city is under an official heat advisory.

Environment Canada issued a heat warning for Toronto and much of Southern Ontario around 11 a.m. on Monday, warning that temperatures "near 30" were expected in the afternoon with even hotter weather to come on Tuesday and Wednesday.

And it gets better, too: With humidity, it'll feel closer to 40 C in Toronto this afternoon (39 C, to be specific, if meteorologists are correct.)

The humidex is currently sitting at 35 C at Toronto's Pearson International Airport, while the UV index is at a 10, or as Environment Canada classifies it, "very high."

toronto weather

Toronto is in the midst of a late-May heat wave that's expected to resolve near the beginning of June. Image via Environment Canada.

"Hot weather today through Wednesday," wrote the federal weather agency in today's heat warning.

"High daytime temperatures near 30 are expected this afternoon and temperatures are forecast to be slightly higher Tuesday and Wednesday. Humidex values in the mid to upper thirties are also expected. There may be some relief near the lakeshores."

Government meteorologists recommend that all residents "drink plenty of water" and stay in a cool place whenever possible for the duration of the heat wave. 

Temperatures should fall a bit overnight on Monday to a low of 19 C, but should rise once again to 31 C on Tuesday morning — feeling more like 39 C with the humidity, of course, because 2020 doesn't believe in mercy.

Lead photo by

George Socka


Join the conversation Load comments

Latest in City

Here are the rules for mask usage during Toronto's lockdown

Another construction crane collapsed in Toronto

Doug Ford admits allowing big box stores to stay open is unfair to local retailers

Toronto neighbourhood has had it with concrete company after cyclist killed by truck

Another storage unit party took place in Toronto this weekend

These are the rules for seeing other people during lockdown in Toronto

This is what's open and closed in Toronto during lockdown

Man building homeless shelters threatened with legal action by City of Toronto