High humidity and heat will continue to weigh down on the Montreal area throughout the day Tuesday and Wednesday (Sep. 4/5), Environment Canada warns.
The hot and humid air will be pulled from the Great Lakes over Souther Quebec by a southwesterly, resulting in humidex values over 40. The mini heatwave is expected to last until Thursday, when a cold front moving in will lower temperatures, and could cause severe thunderstorms.
"The risks are greater for young children, pregnant women, older adults, people with chronic illnesses and people working or exercising outdoors. Never leave people or pets inside a parked vehicle," the government agency warns on its website.
The heat may pose health risks to the elderly, young children, people living without air conditioning and people who work outdoors, among others.