Environment Canada Issues Heat Warning for Ontario, Quebec as Humidex Reaches 45 Degrees

People take to the waters and shores of the Ottawa River in the Ottawa suburb of Constance Bay on July 6, 2023. A heat warning continues for the Ontario and the nation's capital. The Canadian Press/Sean Kilpatrick

Environment Canada has issued a heat warning for parts of Ontario and Quebec as temperatures are expected to rise to 45 degrees Celcius with the humidex this weekend and continue through to mid-week.

Significant heat conditions in southern and eastern Ontario as well as southern and western Quebec will begin on June 22 and are expected to last into June 25 in some areas, the federal agency said in its initial warning on June 21.