ÎÚÑ»´«Ã½

The hottest conditions were expected on Monday and Tuesday, according to the agency, though cooler temperatures are expected to arrive on Wednesday, bringing an end to the multi-day heat event. 

The heat warning covers all parts of southern Ontario, stretching from along Lake Erie and Lake Ontario in the west all the way to Cornwall in the east.

A previous heat warning was also issued for ÎÚÑ»´«Ã½ and other parts of the province last Thursday, when temperatures hit the mid-30s and similar humidex values in the 40s. The current warning is expected to remain in place through Tuesday, when ÎÚÑ»´«Ã½ will see another sunny day with a humidex of 38. 

Dozens of ÎÚÑ»´«Ã½ residents were walking on shaded sidewalks, enjoying lunch on patios and sitting on public wooden benches along Lake Ontario on Monday afternoon.

Here’s what you need to know heading into the week.

What’s the Environment Canada weather forecast?

The sun will be out again on Tuesday when temperatures are expected to hit a daytime high of 31 C. The humidex will sit at 38 C with a UV of nine again. Clouds will roll in at night, bringing with them a 40 per cent chance of showers and a low of 19 C.

With the heat warning expected to be over by Wednesday, the city will see a high of 28 C during the day, a 30 per cent chance of showers and some clouds overhead. The night will be cool and cloudy with a low of 16 C.

By Thursday, temperatures will reach a high of 26 C and a low of 16 C with sunny and clear skies in the day and night.

Friday will be sunny with a daytime high of 25 C. Skies will remain clear at night and overnight lows will drop to 11 C.

Temperatures will stay relatively the same come the weekend as Saturday will see a high of 26 C and a low of 13 C. A daytime high of 28 C is expected Sunday.

What to watch for during a heat warning

Environment Canada continues to advise caution during extreme heat events, especially for older adults, people with pre-existing health conditions and those who are at greater risk.

Symptoms of heat exhaustion include headache, dizziness, nausea, fatigue and dark urine, the agency said. If you notice these symptoms, stop your activity, move to a cooler space and hydrate immediately. 

Heat stroke is a medical emergency, the agency is reminding people. Symptoms include red or hot skin, dizziness, confusion or unconsciousness. If heat stroke is suspected, call 911 and try to cool the person down by applying water or ice packs around the body. 

Don’t forget to check on vulnerable individuals, including older adults, children, people who live alone or with chronic illnesses and those without air conditioning, Environment Canada said. 

How to stay safe during extreme heat

Environment Canada is advising people to stay hydrated by drinking water regularly, even before they feel thirsty. To keep indoor spaces cooler, the agency recommends keeping blinds or curtains closed and opening windows only if its cooler outside than inside. 

Using air conditioning, fans or moving to a cooler area of your home can also help lower your risk of heat-related illness.

If you’re planning to be active outdoors, try to schedule those activities for the early morning or evening when temperatures are lower. Wear lightweight, loose-fitting clothes and protect yourself from the sun with a wide-brimmed hat, the agency added.

To help residents beat the heat, will remain open late, with extended hours at Alex Duff, Fairbank, McGregor Park, Monarch Park, North ÎÚÑ»´«Ã½, Smithfield and Sunnyside until 11:45 p.m. Halbert Park pool will also stay open until 9 p.m.

Anyone looking for free ways to cool down can also use the city’s of community centres, pools, libraries and other heat relief spaces.