What to know
- Toronto is expected to see its hottest day of the week, with temperatures reaching 37 C and feeling like 45 C with the humidex.
- Environment Canada says Tuesday is the peak of the ongoing heat event affecting much of Ontario.
- Hot and humid conditions may worsen air quality, with the Air Quality Health Index approaching the high-risk category.
- The City of Toronto has activated its Heat Relief Network, offering more than 500 cooling spaces, including a 24-hour cooling centre at 136 Spadina Rd.
Toronto is bracing for what is expected to be the hottest day of the week, and potentially one of the hottest days of the year, with temperatures set to soar to nearly 40 C.
Much of Ontario remains under a significant heat event as of Tuesday morning, with Environment Canada issuing a yellow heat warning. Tuesday is expected to be the peak of the heat wave.
Temperatures expected to reach 37 C, feeling like 45 C
According to Environment Canada, Toronto’s temperature is expected to climb to around 37 C Tuesday afternoon, with humidex values making it feel closer to 45 C.
The current heat event marks the second of the summer season, following the first heat wave that shattered temperature records across the Toronto region.
Poor air quality possible during extreme heat
Environment Canada is also warning that the hot, humid conditions could lead to deteriorating air quality, with the Air Quality Health Index potentially approaching the high-risk category.
People who are more vulnerable to heat or air pollution, including older adults, young children and those with underlying health conditions, should take extra precautions.
City opens hundreds of cooling spaces
In response to the extreme heat, the City of Toronto is reminding residents about its Heat Relief Network, which offers more than 500 cooling spaces across the city.
Available locations include libraries, community centres, civic buildings, swimming pools, splash pads, select shopping malls and partner facilities.
The city has also opened a 24-hour cooling space at 136 Spadina Rd.
Watch for signs of heat-related illness
Environment Canada is urging residents to watch for symptoms of heat-related illnesses, including heat exhaustion.
Signs can include headache, nausea, dizziness, excessive thirst, dark urine and intense fatigue. Anyone experiencing these symptoms should stop strenuous activity, move to a cooler place and drink water.
Residents are also encouraged to stay hydrated throughout the day, keep blinds or curtains closed to block out the sun, and open windows if the outdoor temperature is cooler than it is indoors.
