Heat warning
Environment Canada has issued a high-impact heat warning as a long-duration heat event continues through at least Friday, with the possibility of lasting into the weekend. Daytime highs are expected to range from 31 C to 35 C, with some areas potentially reaching 37 C. Overnight temperatures will remain between 21 C and 25 C, offering little relief. The hottest conditions are expected today through Thursday.
The prolonged heat may also lead to deteriorating air quality, with the Air Quality Health Index potentially approaching the high-risk category. Environment Canada says extreme heat can affect everyone’s health, particularly older adults, people living alone, and others at greater risk of heat-related illness.
Residents are encouraged to drink water frequently, limit time outdoors during the hottest parts of the day, wear lightweight clothing, and seek out air-conditioned or cooler public spaces if needed. Officials also urge people to watch for signs of heat exhaustion, such as headache, dizziness, nausea and fatigue, and to call 911 immediately if someone shows symptoms of heat stroke, including confusion, loss of consciousness, or hot, red skin. Children and pets should never be left unattended in parked vehicles.
Today – July 1, 2026
Sunny. Wind becoming southwest 20 km/h gusting to 40 late this morning. High 37. Humidex 45. UV index 10 or very high.
Tonight
Clear. Wind southwest 20 km/h gusting to 40 becoming light this evening. Low 24.
Thu, 2 Jul – Sunny in the morning and early in the afternoon then a mix of sun and cloud with 40 percent chance of showers in the afternoon. Risk of a thunderstorm in the afternoon. Wind becoming southwest 20 km/h gusting to 40 near noon. High 36. Humidex 43. UV index 10 or very high. Night – Cloudy periods. Low 25.
Fri, 3 Jul – A mix of sun and cloud with 40 percent chance of showers. High 34. Night – Cloudy periods with 40 percent chance of showers. Low 23.
Sat, 4 Jul – A mix of sun and cloud with 40 percent chance of showers. High 32. Night – Cloudy periods with 30 percent chance of showers. Low 21.
Sun, 5 Jul – A mix of sun and cloud with 30 percent chance of showers. High 30. Night – Cloudy periods. Low 19.
Mon, 6 Jul – A mix of sun and cloud. High 30. Night – Cloudy periods. Low 18.
Tue, 7 Jul – A mix of sun and cloud. High 31.
