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Summary

Toronto's weather is going to be dangerously hot on Monday and a heat warning is in effect

Toronto's weather is set to be sweltering again. 🥵

The sunny summer day panorama of the downtown Toronto skyline.

Toronto is in for another sweltering day.

Denis Kabanov | Dreamstime
Writer

As the city's heat wave continues, Toronto is baking under extreme sun and isn't getting a break yet.

Environment Canada has issued a heat warning for Toronto on Monday as dangerously hot and humid conditions are expected to continue through Tuesday night.

Temperatures are expected to hit between 33 C and 36 C, but with the humidity, it could feel closer to 46 C. Even at night, things aren't cooling down much — overnight lows are forecast to hover between 22 C and 25 C.

Sunday also saw extreme conditions in the city, as Toronto Pearson Airport saw a high of 35 C with a humidex level of 46 at 5 p.m.

This prolonged heat can be dangerous, especially for older adults, people with health conditions, and those without air conditioning.

The City of Toronto has activated its Heat Relief Network, offering more than 500 public cooling spaces across libraries, community centres, shelters, and drop-in sites. Outreach teams are also checking on vulnerable residents across the city.

Environment Canada has urged Torontonians to be vigilant as heat-related illnesses can come on quickly.

You should watch for symptoms like dizziness, nausea, headache, dark urine, and extreme fatigue. If someone shows signs of heat stroke — such as red, hot skin, confusion, or fainting — call 911 immediately. While waiting for help, try to cool the person down using cold water or ice packs or move them into a shaded or air-conditioned area.

Environment Canada also advised people to drink water regularly, close blinds during the day and open windows if it's cooler outside than inside. If your space gets too hot, consider spending time at a cooling centre, library, or shaded park. Limit strenuous activity during the peak heat hours, and wear lightweight, light-coloured clothing outdoors.

The warning also stressed to "never leave people, especially children, or pets inside a parked vehicle."

Stay tuned to Environment Canada's website for the latest heat updates and safety information throughout the day.

Be safe, shaded and hydrated out there, Torontonians.

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AI tools may have been used to support the creation or distribution of this content; however, it has been carefully edited and fact-checked by a member of Narcity's Editorial team. For more information on our use of AI, please visit our Editorial Standards page.

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    • Originally from Ireland, Tomás Keating was a Toronto-based Writer for Narcity. After graduating with a Masters in Journalism from the University of Galway in 2019, Tomás utilized his passion for news, current affairs, pop culture and sports as a digital journalist before relocating to Toronto in 2024. In his spare time, Tomás loves exploring the city, going to the cinema and playing Gaelic football with his local GAA club in Toronto.

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