Extreme heat and humidity in southern Ontario all week

Sweltering temperatures have settled across southern Ontario and Environment Canada says the dangerously hot and humid weather will be sticking around for the rest of the week.

Sweltering temperatures have settled across southern Ontario and Environment Canada says the dangerously hot and humid weather will be sticking around for the rest of the week.

The agency issued a heat warning Monday for much of the province, from Windsor to Ottawa and from Sault Ste. Marie to Moosonee.

Environment Canada said daytime highs could range from 30 to 35 degrees Celsius, but with the humidity, it will feel closer to 40 or 45.

And we won’t get much relief overnight either.

The agency said it will drop to only 20 to 23 degrees Celsius at night, but will feel more like 26 to 30.

“As we get into the weekend we’ll start to see the daytime highs get cooler throughout the southwest,” added CTV News Kitchener Weather Specialist Will Aiello.

Dave Phillips, a senior climatologist with Environment Canada, says the province is experiencing a heat dome. That’s the term used to describe high-pressure areas where air sinks and is trapped, as if it’s been capped by a lid. Heat domes can last between five and seven days.