Ontario heat wave set to bring soaring temperatures that feel near 45 C
Written by The Canadian Press on July 13, 2026
TORONTO — A heat wave has settled into parts of Ontario with meteorologists warning that temperatures are expected to climb in some areas, and could feel as hot as 45 C.
The weather office has much of northern Ontario on Monday under a severe orange warning, from Kenora and Thunder Bay to Fort Hope and Timmins.
Forecasters say those areas could see highs of 36 C, with the humidex making it feel as hot as 42 C, before letting up later this week.
Environment Canada has also issued less severe yellow warnings for southern Ontario, including Windsor, Toronto, North Bay and Ottawa.
Several municipalities opened cooling stations and pools on Monday to help residents find relief during the heat wave.
Temperatures are reaching nearly 37 C and humidex values are reaching 45 C in some areas during a heat event that’s set to peak Tuesday and last until Wednesday or Thursday.
The weather agency said hot and humid air can also deteriorate air quality.
“Take action to protect yourself and others – extreme heat can affect everyone’s health,” the agency said.
“Determine if you or others around you are at greater risk of heat illness. Check on older adults, those living alone and other at-risk people in-person or on the phone multiple times a day.”
The City of Toronto said water and cooling stations, as well as pools, beaches and splash pads, will be available to the public to help beat the heat.
“The city has increased outreach and wellness checks and added an additional 113 contingency spaces – non-traditional sleeping spaces – for people experiencing homelessness. These spaces have been available since Tuesday, June 30,” city officials said.
A “24-hour cool space” is also available throughout the heat warning, offering “air-conditioned seating, light refreshments and recreational activities.”
The City of Hamilton said its also offering “cool places” to people seeking relief.
The city also said indoor and outdoor pools will be open free of charge and residents can also use spray pads, additional cool places and outdoor pools across the city.
This report by The Canadian Press was first published July 13, 2026.
Maan Alhmidi, The Canadian Press