Heat warning
Heat and humidity expected to continue through Wednesday and possibly extending into Thursday.
Daytime maximum temperatures: 30 to 32 degrees Celsius, with humidex values 37 to 42.
Nighttime minimum temperatures: 17 to 21 degrees Celsius.
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.
Watch for the effects of heat illness: swelling, rash, cramps, fainting, heat exhaustion, heat stroke and the worsening of some health conditions.
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 – August 24, 2021
Sunny early this morning then a mix of sun and cloud with 30 percent chance of showers late this afternoon. Risk of a thunderstorm late this afternoon. Fog patches dissipating early this morning. High 32. Humidex 43. UV index 8 or very high.
Tonight
Partly cloudy with 30 percent chance of showers early this evening then clear. Risk of a thunderstorm early this evening. Low 21.
Wed, 25 Aug – Sunny early in the morning then a mix of sun and cloud with 40 percent chance of showers in the afternoon. Risk of a thunderstorm in the afternoon. High 33. Humidex 43. UV index 8 or very high. Night – Cloudy with 60 percent chance of showers. Low 21.
Thu, 26 Aug – A mix of sun and cloud. High 31. Night – Cloudy periods. Low 19.
Fri, 27 Aug – A mix of sun and cloud with 30 percent chance of showers. High 28. Night – Cloudy periods with 30 percent chance of showers. Low 20.
Sat, 28 Aug – A mix of sun and cloud. High 30. Night – Cloudy periods. Low 20.
Sun, 29 Aug – A mix of sun and cloud. High 31. Night – Cloudy periods. Low 19.
Mon, 30 Aug – A mix of sun and cloud. High 29.
