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Environment Canada issued a heat alert for Toronto & surrounding areas, with humidex values reaching 36C. The Silicon Review reports on the city's heat relief strategy, cooling centres, and safety tips as the first major heat event of 2026 arrives. Environment Canada has issued a yellow-level heat alert for the Greater Toronto Area, marking the first major heat event of 2026. The warning covers Toronto, Vaughan, Richmond Hill, Markham, Mississauga, Brampton, Hamilton, Burlington, Oakville, & Niagara Falls, beginning Monday afternoon and lasting through Tuesday night. Daytime highs are expected to reach 30C, but with humidity, it will feel like nearly 36C. Overnight lows will hover between 18C and 20C, offering little relief. Environment Canada meteorologist Kristina Kretchman noted that the sudden shift from below-normal spring temperatures to midsummer conditions may feel "dramatic," but a hot spell this time of year is not unusual. A warm air mass moving up from the United States is bringing extra heat and moisture into Ontario. The extreme heat warning carries specific health risks. Environment Canada advises watching for early signs of heat exhaus...