Strengthening tropical system may have limited Eastern Canada impacts
Alerts in Effect
Heat WarningIssued at 10:58 Thursday 09 July 2020
A period of hot weather continues.
Daytime high temperatures in excess of 30 degrees Celsius, with humidex values in the high thirties to low forties, are expected. Overnight lows near 20 degrees Celsius are also expected through this period, providing little relief from the heat.
A slightly cooler airmass may move into the area this weekend, however there is considerable uncertainty. A few areas towards eastern Ontario are likely to experience extreme heat and high humidex values on Saturday as well.
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.
The risks are greater for young children, pregnant women, older adults, people with chronic illnesses and people working or exercising outdoors.
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.