Toronto is under a heat warning as humidity makes it feel like 35°C, according to Environment Canada. The warning, issued early Monday, covers the city and surrounding areas, with temperatures expected to reach 30°C, but the humidex making it feel significantly hotter.
What to Expect
The heat warning is in effect for May 18, 2026, with the hottest part of the day expected in the afternoon. Residents are advised to stay hydrated, avoid strenuous outdoor activities, and check on vulnerable family members and neighbors. The city has opened cooling centers to help people beat the heat.
Victoria Day Weekend
This heat warning comes during the Victoria Day long weekend, a time when many Torontonians head outdoors. The city has released a list of what is open and closed, including public pools and splash pads, which are operating extended hours. Fireworks displays are still scheduled, but attendees are urged to bring water and sunscreen.
Health Risks
Extreme heat can lead to heat exhaustion or heat stroke, especially for older adults, children, and those with chronic conditions. Symptoms include heavy sweating, weakness, dizziness, and nausea. If you experience these, move to a cool place, drink water, and seek medical help if symptoms worsen.
Cooling Centers
The city has activated seven cooling centers across Toronto, located at community centers and libraries. These facilities are air-conditioned and open to the public. Additionally, the TTC is offering free rides to cooling centers for those in need.
Environmental Impact
This heat wave is part of a broader trend of early summer heat events linked to climate change. Experts warn that such extreme weather may become more frequent. Residents are encouraged to reduce energy use during peak hours to prevent strain on the power grid.
Stay tuned to local news for updates on the heat warning and tips to stay safe during this hot spell.



