Environment Canada has issued heat warnings for multiple regions across Canada, with daytime highs in the mid-30s Celsius and humidex values approaching 45. The extreme heat is affecting areas including Ontario, Quebec, and the Maritimes.
Regions Under Heat Warnings
In Ontario, Toronto and surrounding areas are experiencing sweltering conditions. The heat wave is described by Environment Canada as “very close to being the warmest on record.” London and the surrounding area also face persistent heat warnings. Ottawa continues to endure high temperatures as cleanup from record-smashing rainfall begins. Montreal and its region are under a heat warning with humidex nearing 42.
In the Maritimes, heat warnings have been issued across the region. The Prairies are also affected, with parts of Manitoba and Saskatchewan experiencing extreme conditions. British Columbia's Lower Mainland, including Vancouver, is under heat warnings as well.
Impact on Events and Infrastructure
The extreme heat has led to the cancellation of World Cup screenings at Nathan Phillips Square in Toronto. Power outages have occurred in Barrie and central Ontario due to thunderstorms, leaving thousands without electricity. Ontario power companies are responding to a large-scale blackout. In Quebec, REM service between McGill and Bois-Franc has been disrupted.
According to a CTV News report, the heat wave is causing widespread discomfort and health risks. Environment Canada warns that the combination of high temperatures and humidity can lead to heat-related illnesses.
Safety Measures and Advice
Officials urge residents to stay hydrated, avoid strenuous outdoor activities during peak heat hours, and check on vulnerable individuals such as the elderly and those with pre-existing health conditions. Cooling centers have been opened in many cities. “It actually harms you,” said a health expert regarding the use of fans in extreme heat, noting that fans can circulate hot air and increase dehydration.
In Ottawa, a heat warning continues as cleanup from record-smashing rainfall begins. The city experienced 118 mm of rain on Canada Day. Residents are advised to limit time outdoors and seek air-conditioned spaces.
Broader Context
The heat warnings come as Canada faces a series of extreme weather events. Earlier, a tornado was confirmed in Whyte Ridge, Manitoba, and the Rossburn tornado rating was upgraded. The country is also dealing with the aftermath of severe thunderstorms and flooding.
Prime Minister Mark Carney emphasized national unity in his Canada Day address, while also addressing serious immediate priorities with Inuit leaders. The extreme weather underscores the challenges posed by climate change, as scientists warn of more frequent and intense heat waves.
