Heat warning
Hot and humid conditions this afternoon into Monday night.
Maximum daytime temperatures from 31 to 34 degrees Celsius are expected with humidex values near 40. Overnight low temperatures are forecast to fall to only 20 to 22 degrees, providing little relief from the heat.
A cold front is expected to bring showers and thunderstorms later in the day Tuesday bringing an end to the heat and humidity.
Hot and humid air can also bring deteriorating air quality and can cause the Air Quality Health Index to approach the high risk category.
Extreme heat affects everyone.
The risks are greater for young children, pregnant women, older adults, people with chronic illnesses and people working or exercising outdoors.
Drink plenty of water even before you feel thirsty and stay in a cool place.
Seek a cool place such as a tree-shaded area, swimming pool, shower or bath, or air-conditioned spot like a public building.
Never leave people or pets inside a parked vehicle.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@canada.ca or tweet reports using #ONStorm.
Today – July 4, 2021
A mix of sun and cloud. 30 percent chance of showers this afternoon with risk of a thunderstorm. Fog patches dissipating this morning. High 31. Humidex 36. UV index 9 or very high.
Tonight
Partly cloudy. 30 percent chance of showers this evening with risk of a thunderstorm. Low 20.
Mon, 5 Jul – Sunny. Wind becoming southwest 20 km/h gusting to 40 near noon. High 33. Humidex 41. UV index 9 or very high. Night – Clear. Low 23.
Tue, 6 Jul – Sunny. High 31. Night – Cloudy periods with 60 percent chance of showers. Low 18.
Wed, 7 Jul – Cloudy. High 25. Night – Cloudy periods. Low 15.
Thu, 8 Jul – A mix of sun and cloud. High 23. Night – Cloudy periods. Low 17.
Fri, 9 Jul – A mix of sun and cloud. High 26. Night – Cloudy with 60 percent chance of showers. Low 20.
Sat, 10 Jul – Cloudy with 60 percent chance of showers. High 27.
