Today – July 27, 2023
Mainly cloudy. Clearing late this afternoon. High 29. Humidex 37. UV index 9 or very high.
Heat warning
Hot and humid conditions expected through Friday.
Very humid conditions are expected today with humidex values in the upper thirties. Friday is expected to be extremely hot with humidex values reaching forty for many areas. Minimum temperatures in the low twenties will provide little relief from the heat. Cooler temperatures are expected Saturday.
Areas near the lakes can expect to remain cooler than areas inland.
Hot and humid air can also bring deteriorating air quality and can result in the Air Quality Health Index approaching the high risk category.
Watch for the effects of heat illness: swelling, rash, cramps, fainting, heat exhaustion, heat stroke and the worsening of some health conditions.
Drink plenty of water even before you feel thirsty and stay in a cool place.
Check on older family, friends and neighbours. Make sure they are cool and drinking water
Never leave people or pets inside a parked vehicle.
Outdoor workers should take regularly scheduled breaks in a cool place.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or tweet reports using #ONStorm.
Tonight
Clear. Low 19.
Fri, 28 Jul – A mix of sun and cloud. 40 percent chance of showers late in the afternoon with risk of a thunderstorm. Wind south 20 km/h becoming light late in the morning. High 31. Humidex 42. UV index 10 or very high. Night – Cloudy with 60 percent chance of showers. Low 21.
Sat, 29 Jul – Cloudy with 60 percent chance of showers. High 24. Night – Clear. Low 15.
Sun, 30 Jul – Sunny. High 26. Night – Clear. Low 15.
Mon, 31 Jul – A mix of sun and cloud. High 27. Night – Cloudy periods. Low 18.
Tue, 1 Aug – A mix of sun and cloud. High 27. Night – Cloudy. Low 19.
Wed, 2 Aug – Cloudy. High 27.
