Today – July 6, 2025
Clearing this morning. Wind becoming southwest 20 km/h gusting to 40 this morning. High 34. Humidex 39. UV index 10 or very high.
Heat warning
Humidex values reaching 40 are expected for the next 2 days.
A heat event continues this weekend.
What:
Daytime highs of 31 to 33 degrees Celsius and a humidex of 40.
Overnight lows of 21 to 25 degrees Celsius, providing little relief from the heat.
When:
Continuing today, coming to an end tonight.
Additional information:
Hot and humid air can also bring deteriorating air quality and result in the Air Quality Health Index approaching the high risk category.
Take action to protect yourself and others – extreme heat can affect everyone’s health. Determine if you or others around you are at greater risk of heat illness. Check on older adults, those living alone and other at-risk people in-person or on the phone multiple times a day.
Watch for the early signs of heat exhaustion in yourself and others. Signs may include headache, nausea, dizziness, thirst, dark urine and intense fatigue. Stop your activity and drink water.
Heat stroke is a medical emergency! Call 9-1-1 or your emergency health provider if you, or someone around you, is showing signs of heat stroke which can include red and hot skin, dizziness, nausea, confusion and change in consciousness. While you wait for medical attention, try to cool the person by moving them to a cool place, removing extra clothing, applying cold water or ice packs around the body.
Drink water often and before you feel thirsty to replace fluids.
Close blinds, or shades and open windows if outside is cooler than inside.
Turn on air conditioning, use a fan, or move to a cooler area of your living space. If your living space is hot, move to a cool public space such as a cooling centre, community centre, library or shaded park.
Follow the advice of your region’s public health authority.
Plan and schedule outdoor activities during the coolest parts of the day.
Limit direct exposure to the sun and heat. Wear lightweight, light-coloured, loose-fitting clothing and a wide-brimmed hat.
Never leave people, especially children, or pets inside a parked vehicle. Check the vehicle before locking to make sure no one is left behind.
For more information: How to protect yourself from the health effects of extreme heat Health risks and who is at risk of extreme heat events
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
Tonight
Mainly cloudy with 40 percent chance of showers and risk of a thunderstorm. Wind southwest 20 km/h becoming light near midnight. Low 22.
Mon, 7 Jul – Cloudy with 30 percent chance of showers. Wind becoming north 20 km/h gusting to 40 early in the afternoon. High 28. Humidex 33. UV index 7 or high. Night – Cloudy. Low 17.
Tue, 8 Jul – Sunny. High 28. Night – Clear. Low 19.
Wed, 9 Jul – Cloudy with 30 percent chance of showers. High 27. Night – Cloudy periods. Low 18.
Thu, 10 Jul – A mix of sun and cloud. High 29. Night – Cloudy periods with 30 percent chance of showers. Low 19.
Fri, 11 Jul – A mix of sun and cloud with 40 percent chance of showers. High 31. Night – Cloudy with 40 percent chance of showers. Low 21.
Sat, 12 Jul – Cloudy. High 29.
