Sunday, July 25, 2021

Heat warning, sunny, high 31°C, humidex 36°C, UV index very high

Heat warning

Hot weather continues.

Heat. Daytime highs near 31 Celsius with overnight lows near 21 Celsius.

Southwestern Ontario, including Windsor, Chatham, and Sarnia.

Now into Monday.

Hot and humid air can also bring deteriorating air quality and can result in the Air Quality Health Index to approach the high risk category.

The risks are greater for young children, pregnant women, older adults, people with chronic illnesses and people working or exercising outdoors.

Check on older family, friends and neighbours. Make sure they are cool and drinking water

Reduce your heat risk. Schedule outdoor activities during the coolest parts of the day.

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 or tweet reports using #ONStorm.

Today – June 6, 2021

Sunny. Wind becoming southwest 20 km/h this morning. High 31 except 26 near Lake Huron. Humidex 36. UV index 9 or very high.


Clear. Becoming partly cloudy this evening. Wind southwest 20 km/h becoming light late this evening. Low 20.

Mon, 7 Jun – A mix of sun and cloud. 40 percent chance of showers late in the morning and in the afternoon with risk of a thunderstorm. Wind becoming southwest 20 km/h in the afternoon. High 30. Humidex 37. UV index 10 or very high. Night – Cloudy. Low 21.

Tue, 8 Jun – Cloudy with 40 percent chance of showers. High 29. Night – Cloudy. Low 21.

Wed, 9 Jun – A mix of sun and cloud with 40 percent chance of showers. High 28. Night – Cloudy with 30 percent chance of showers. Low 18.

Thu, 10 Jun – Cloudy with 40 percent chance of showers. High 27. Night – Cloudy. Low 17.

Fri, 11 Jun – Cloudy. High 26. Night – Cloudy. Low 17.

Sat, 12 Jun – A mix of sun and cloud. High 29.

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