Toronto and much of southern Ontario are under an orange heat warning as a prolonged heat wave grips the region. Environment Canada issued the alert on June 29, 2026, warning of dangerous temperatures expected to persist through the week and potentially into the weekend.
Temperatures are forecast to climb into the high 30s Celsius, with humidex values making it feel like the low 40s. Overnight temperatures are expected to offer little relief, with lows only dipping into the low to mid-20s. This extended period of extreme heat poses significant health risks, particularly for vulnerable populations.
The "orange" alert signifies that severe weather is likely to cause significant damage, disruption, or health impacts. In response, the City of Toronto is opening cooling centres and extending the hours for city pools to provide much-needed respite from the sweltering conditions. Water trailers are also being deployed in public spaces for residents to access hydration.
Residents are advised to take precautions such as drinking plenty of fluids, seeking shade, and limiting outdoor activities during the hottest parts of the day. The heatwave follows a period of unseasonably mild weather in late June, marking a dramatic shift in conditions across the province.
This extreme weather event is a stark reminder of the changing climate and its tangible impacts on Canadians. The orange alert is a signal for residents to take immediate action to protect themselves and their loved ones from the potentially life-threatening conditions.
