WEATHER ALERT
ENVIRONMENT CANADA
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Special weather statement in effect for:
• Halton Hills - Milton
• Mississauga - Brampton
• Niagara Falls - Welland - Southern Niagara Region
• St. Catharines - Grimsby - Northern Niagara Region
Humidex values in the low forties are expected today.
Exceptionally hot and humid conditions are expected today, with daytime high temperatures of 31 to 33 degrees Celsius and humidex values of 41 to 43.
Overnight low temperatures tonight of 20 to 22 degrees Celsius will provide minimal relief from the heat.
Drink plenty of water even before you feel thirsty and spend more time 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.
A heat warning will not be required, as daytime high temperatures will not reach warning criteria on Thursday due to the passage of a cold front. Heat warnings require hot and humid conditions (temperatures of 31 degrees Celsius or humidex values of 40) to last for two days, including the overnight low in between to be 20 degrees Celsius or higher. In this case, a special weather statement has been selected to highlight that these conditions may pose a health risk.
Hot and humid air can also bring deteriorating air quality and can result in the Air Quality Health Index approaching the high risk category.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.
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