Skip to content

Humidex expected to spike into 40s today

Stay cool, Halton Hills, as the temperature is set to soar this afternoon
hot weather AdobeStock_96463922
Stock image

Environment Canada has issued a special weather statement for the Halton Hills area, warning that humidex values may rise into the 40s today.

Full text of the statement follows:

Special weather statement in effect for:
    •    Halton Hills - Milton
    •    Mississauga - Brampton

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 or tweet reports using #ONStorm.