Environment Canada has issued a yellow heat warning for Toronto and surrounding areas starting Monday.
Temperatures are expected to reach a maximum of 30 to 36 C and humidity values of 38 to 45 C, the national weather agency predicts. The hot and humid forecast is expected to last until Wednesday or Thursday evening.
“Tuesday will mark the peak of this heat wave, with maximum temperatures expected to reach around 36 degrees Celsius in some areas,” Environment Canada said in a notice. “Hot and humid air can also deteriorate air quality and cause the Air Quality Index to move closer to the high risk category.”
“Take steps to protect yourself and others – extreme heat can affect everyone’s health,” it added.
Heat warnings have been issued for Toronto, Pickering, Oshawa, Vaughan, Richmond Hill, Markham, Peel, Halton, Hamilton and Niagara.
“Monitor yourself and others for early signs of heat exhaustion,” officials added. “Signs may include headache, nausea, dizziness, thirst, dark urine and extreme fatigue. Stop your activities and drink water.”
How the City of Toronto is responding
The City of Toronto says its Heat Relief Strategy is working. Officials are monitoring the situation around the clock and coordinating the work of government services.
Beginning at noon on Monday, July 13, four mobile water trailers will be available offering water fountains and bottle filling stations at:
- Nathan Phillips Square
- Mel Lastman Square
- East York Community Center
- Barbara Hall Park
They will remain in these locations until the heat warning is lifted, with the exception of the mobile water station at Nathan Phillips Square, which will remain in place throughout the 2026 World Cup.
Cool rooms at Scarborough, Etobicoke, York and East York community centers will be open from 8am to 9:30pm, as will Metro Hall.
The North York Community Center will be open from 7:30 a.m. to 9:30 p.m.
The 24-hour cool space will operate at 136 Spadina Rd. beginning at noon on Monday, July 13, and will remain in effect for the duration of the heat advisory.
More than 170 splash pads will be open daily from 9:00 to 21:00, and 84 children’s pools will be open at different times.
57 outdoor pools are open from 10:00 to 20:00, with eight pools operating extended hours until 23:45 during heat warnings, including:
- Sunnyside, Gus Ryder Pool, 1755 W Lake Shore Blvd.
- Alex Duff Poole, 779 Crawford St.
- Giovanni Caboto Pool, 1367 St. Claire Ave. W.
- Heron Park Pool, 292 Manse Rd.
- McGregor Pool at the Park, 2231 Lawrence Ave. E.
- Monarch Park Pool, 115 Felsted Avenue.
- North Toronto Memorial, 200 Eglinton Avenue.
- Smithfield Park Pool, 175 Mount Olive Dr.
Toronto skyline on Friday, May 8, 2026. THE CANADIAN PRESS/Sammy Kogan The Canadian Press
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