Much of Ontario, including the city of Toronto, is under a heat warning, which one expert said could be the start of a “warmer than usual” summer.
Temperatures in Toronto are expected to hit around 40C for the next two days after using Humidex, with little relief overnight.
Hot and humid conditions are expected on Tuesday and Wednesday.
Daily highs of nearly 31C are expected on Tuesday and Wednesday, with Humidex readings in the 30s.
According to the Met Office, the red heat warning covers most of England and will run until Tuesday, when temperatures reach 40C for the first time, posing a risk of serious illness and even death to healthy people. s Bureau of Meteorology.