ENVIRONMENT CANADA
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Heat Warning in effect for:
- Niagara Falls - Welland - Southern Niagara Region
- St. Catharines - Grimsby - Northern Niagara Region
A hot and humid air mass will affect south-central Ontario and the Greater Toronto Area today. Slightly cooler and less humid conditions may arrive on Monday.
Daytime high temperatures: 31 to 34 degrees Celsius
Overnight low temperatures: 20 to 24 degrees Celsius
Humidex values: low 40s today
Hot and humid air can also bring deteriorating air quality and can result in the Air Quality Health Index approaching the high risk category.
Watch for the effects of heat illness: swelling, rash, cramps, fainting, heat exhaustion, heat stroke and the worsening of some health conditions.
Never leave people or pets inside a parked vehicle.
When it's hot eat cool, light meals.
Outdoor workers should take regularly scheduled breaks in a cool place.
Heat warnings are issued when very high temperature or humidity conditions are expected to pose an elevated risk of heat illnesses, such as heat stroke or heat exhaustion.
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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