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Asia - Pacific


Annex, Thunder Bay District, ON

Alerts in Effect

Heat Warning

Issued at 20:16 Friday 03 July 2020

A long duration heat event continues.

Daytime high temperatures near 30 degrees Celsius, with humidex values in the mid to high thirties, are expected until Sunday, or possibly into early next week for some areas. Overnight lows near 19 degrees Celsius will provide little relief from the heat.

Please refer to your public forecast for further details on expected temperatures.

Hot and humid air can also bring deteriorating air quality and can result in the Air Quality Health Index approaching 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.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to or tweet reports using #ONStorm.

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