'Dangerous' heat wave remains in effect for Hamilton, Niagara, Brant and area, Environment Canada says

Much of Ontario, including Hamilton, the Niagara Region, Burlington and Brant County, are still under a heat warning.

The weekend heat warning will continue through the week, the weather agency said.

Temperatures are expected to reach 33 to 36 C during the day and feel like 42 to 46, Environment Canada said. At night, those in the Hamilton area can expect a low of 22 to 25 C, "providing little relief from the heat." 

The high temperatures are expected to continue into Tuesday night, with a high of 33 C, 42 with the humidex, and a low of 19 C.

"Extreme heat can affect everyone's health," said Environment Canada in its heat warning. 

"Watch for the early signs of heat exhaustion in yourself and others. Signs may include headache, nausea, dizziness, thirst, dark urine and intense fatigue. Stop your activity and drink water."

Ways to reduce heat impact

The weather agency recommends people close their blinds and shades as well as open windows if it feels cooler outside than inside. It also recommends using a fan or air conditioner, to limit outdoor activities and direct exposure to the sun and heat, and wear lightweight and light-coloured clothing. 

The medical officer of health for the City of Hamilton initiated a heat warning starting Sunday.

The city and some community agencies will open cooling areas for people to go during the "dangerous" heat and humidity.

Regularly scheduled public swims at indoor pools will be free in the city.

In Burlington, Ont., public libraries will be available for cooling during regular hours, that city said in a statement Saturday.