Stifling Heat Forecast in Ontario, Quebec, Atlantic Provinces and Parts of BC

A windsurfer cuts through the waves along Lake Ontario overlooking the City of Toronto skyline on a warm winter day in Mississauga, Ont., on Feb. 9, 2024. The Canadian Press/Nathan Denette

Another day of punishing heat and humidity is expected to hit Ontario, Quebec and the four Atlantic provinces.

A heat warning from Environment Canada remains in effect for all of southern Ontario, stretching north past Lake Huron and Georgian Bay and east through southern Quebec.