Millions in Ontario are under a heat warning
Friday and Saturday will likely be the hottest days of the year so far.
Enivironment Canada has issued a heat warning that includes nearly all of Southern Ontario.
Toronto is expected to hit highs of 34 both days, with humidex values into the 40s.
The good news is, there will be some relief come Sunday.
A weak cold front is expected to arrive. The forecast high is 26 degrees.