Ontario and parts of Quebec are sweltering under a relentless heat dome, with temperatures peaking at 36 C and humidex values near 46 C.
Environment Canada says the heat wave that began Sunday could persist until Wednesday. Meteorologist Geoff Coulson confirmed Toronto likely broke its June 23 record, first set in 1983.
Eighteen Ontario locations already set new records on Sunday. Coulson warned that after a cooler spring, residents are less prepared for this level of heat.
The Toronto District School Board alerted families about discomfort in schools with limited or no air conditioning. While most schools remain open, several French-language schools closed due to lack of cooling.
Toronto has opened over 500 cooling centres. Mayor Olivia Chow promised extended hours at outdoor pools after some closed Sunday over staff safety concerns.
Hydro One crews are still restoring power after weekend storms left many in central and eastern Ontario without electricity. Full restoration may take until Tuesday.
Meanwhile, in Montreal, locals and tourists are adjusting plans. Some, like visitors from England and B.C., are seeking shade and water for relief.
Public health officials across both provinces are urging hydration and caution, as overnight temperatures will remain high until mid-week.
