‘Hot and humid’ air mass makes it feel like 40C in much of southern Ontario [Video]

Several parts of the province, including much of the GTHA, remain under a heat warning as a “hot and humid” air mass is making it feel like 40 C.

In the Golden Horseshoe area, Toronto, Hamilton, Burlington-Oakville, Caledon, Halton Hills-Milton, London-Parkhill-Eastern Middlesex County, Mississauga-Brampton, Newmarket-Georgina-Northern York Region, Niagara Falls-Welland-Southern Niagara Region, Pickering-Oshawa-Southern Durham Region, St. Catharines, Grimsby-Northern Niagara Region, Uxbridge-Beaverton-Northern Durham Region, and Vaughan-Richmond Hill-Markham are affected by the “heat event,” which is expected to continue into Tuesday night when a cooler air mass is expected to arrive.

The warning also affects a number of regions in the northern and eastern parts of the province.

Environment Canada is advising that there won’t be much relief at night as minimum temperatures are expected to be near 20 degrees Celsius. Daytime maximum temperatures are expected to reach about 32 C.

“Hot and humid air can also bring deteriorating air quality and can …