With temperatures soaring into the thirties on Tuesday, and feeling more like 40 with the humidity, Toronto's Medical Officer of Health, Dr. Dave McKeown, issued the city's first Heat Alert of 2011.
The alert has now ended, but the public was being encouraged to call or visit family, friends and neighbours to make sure they were cool and drinking plenty of fluids.
During a heat alert, the city is encouraged to “beat the heat” by drinking water and staying hydrated, staying in air-conditioned places, staying out of the sun and reducing strenuous outdoor activity.
Tanya Elliot is with the Canadian Red Cross. She says heat alerts are issued when there is an increased risk of mortality or illness based on the temperature.
“You want to try and stay out of the sun as much as possible,” says Elliot. “Avoid any strenuous activity particularly between the hottest part of the day, which is around 11am to 4pm.”
Those most at risk of heat-related illnesses include the elderly, very young children and people who are physically exerting themselves outdoors.
On Tuesday, temperatures soared into the thirties across southern Ontario. With the humidity, it felt more like 40 in places like Windsor, Hamilton and Markham.
Still, the warm weather wasn't confined to the south. Temperature records were broken in places like North Bay, Wawa. Wiarton and Collingwood. Eventually, a cold front swept across the region, sparking thunderstorms in the Muskoka and Nickel Belt regions.
That same cold front will help make for a less-muggy day in southern Ontario for Wednesday.
“We're still looking at warm temperatures, but the air will be drier,” says Gina Ressler, a meteorologist at The Weather Network.
For a look at the weather conditions you can expect over the coming months, be sure to check The Weather Network's Summer Outlook 2011.
With files from Andrea Stockton