We’re back to a sizzling stretch of weather, ÎÚÑ»´«Ã½.
Environment Canada has issued Ìýfor a multi-day heat event beginning on Saturday and lasting into early next week.
Temperatures could reach highs of 30 to 33 C during the day, while the humidity could make it feel as hot as 35 to 40, the weather agency said. At night, the temperature is expected to cool to lows of 19 toÌý22 C.Ìý
Hot, humid weather settled over much of Ontario and parts of Quebec on Saturday with Environment Canada warning of a multi-day heat wave set to bring even higher temperatures Sunday and Monday. (Aug. 9, 2025).
The Canadian PressYour weather forecast for the coming days
Saturday will be sunny with a mix of sun and cloud coming late in the morning and haze starting in the afternoon. There will be a high of 32 C, though the humidity will make it feel like 40, and a UV index of eight, which is considered very high. Skies will clear by nighttime but the hazy conditions will last into the evening. There will be an overnight low of 21 C.Ìý
Similarly, Sunday will also be sunny with clear skies and a high of 33 C that feels closer to 40, paired with a very high UV index of 8. At night, clear skies and a low of 23 C will cap off the weekend.
Kicking off the work week, Monday will be sunny with clear skies at night. Temperatures are expected to hit a high of 33 C during the day and a low of 23ÌýC at night.Ìý
Tuesday will see a mix of sun and cloud with a 40Ìýper cent chance of showers during the day before increasing to a 60Ìýper cent chance of rain and cloudy periods at night. There will be a high of 32ÌýC and a low of 22ÌýC.Ìý
The next day, Wednesday, will be similar, with a mix of sun and cloud and a 40 per cent chance of showers. There will be a high of 29ÌýC and low of 20ÌýC with cloudy periods at night.Ìý
What should I do during a heat event?
People should proactively try to protect themselves and others, Environment Canada recommended in its warning. This could include scheduling outdoor activities for the coolest parts of the day, limiting direct exposure to the sun and heat, and wearing lightweight, light-coloured, loose-fitting clothing and a wide-brimmed hat to stay cool.
During heat events, Environment Canada said it is important to check on older adults, those living alone and other at-risk people in-person or on the phone multiple times a day. People and pets should never be left inside parked vehicles.
Environment Canada urged people to drink water often and before feeling thirsty to prevent dehydration.
People should also close blinds or shades and open their windows if it’s cooler outside than it is inside. Those who can should turn on air conditioning, use a fan or move to a cooler area of their home, Environment Canada added.
Some outdoor pools are extending their hours amid Saturday’s heat and are open until 11:45 p.m., the city said in a :
- Alex Duff
- Fairbank
- Heron Park
- McGregor Park
- Monarch Park
- North ÎÚÑ»´«Ã½
- Smithfield
- Sunnyside
Metro Hall is open 24/7 during the heat warning, the city added, noting ÎÚÑ»´«Ã½nians can use its .
What are the signs of heat illness and what should I do if symptoms develop?
Environment Canada said they issue heat warnings when very high temperature or humidity conditions could pose an increased risk of heat illnesses, such as heat stroke or heat exhaustion. Heat stroke is a medical emergency that warrants a 911 call, they wrote in the heat warning.
Though extreme heat can affect anyone’s health, some groups — such as children, the elderly or pregnant people — are at greater risk of heat illness.
People should watch out for early signs of heat exhaustion, which include headache, nausea, dizziness, thirst, dark urine and intense fatigue, according to Environment Canada. If you think you may be experiencing symptoms of heat exhaustion, take a break to drink water and move to a cool space, the agency said.
Anyone looking for free ways to cool down can also use the city’s interactive map of community centres, pools, libraries and other heat relief spaces.
If a person is showing signs of heat stroke however, such as red and hot skin, dizziness, nausea, confusion and change in consciousness, someone should call 911, help move the person to a cool place and put ice packs or cold water around their body.
ÎÚÑ»´«Ã½’s special air quality statement has been lifted
As extreme heat takes over the city, the wildfire smoke that had been blanketing ÎÚÑ»´«Ã½ is blowing away.
Environment Canada lifted the special air quality statement that had been issued for ÎÚÑ»´«Ã½ on Friday as wildfire smoke drifted into the region from Prairie fires out west.
The Canadian government’s map of wildfire smoke fine particulate matter models for Aug. 9-10 shows smoke will intensifying over parts of Manitoba, Saskatchewan and the northern portion of the Avalon Peninsula. (Aug. 9, 2025)
The Canadian PressThroughout the workweek, ÎÚÑ»´«Ã½ had some of the worst air quality in the world when compared against other major cities by Swiss air technology company, .
°Õ´Ç°ù´Ç²Ô³Ù´Ç’s is forecasted to hover around a moderate-risk of five on Saturday, which means the general population can go ahead with their usual outdoor activities unless they experience symptoms like coughing or throat irritation. Those at an increased risk and experiencing should consider reducing or rescheduling activities.Ìý
With files from Kristjan Lautens and Elissa Mendes
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