top of page
  • Writer's pictureAdvance Weather

Heat Warning Issued

Issued: 3:10 PM EDT Tuesday 14 June 2022 by Environment and Climate Change Canada

Heat Warning issued for:

  • Brantford - County of Brant

  • City of Hamilton

  • Dunnville - Caledonia - Haldimand

  • Goderich - Bluewater - Southern Huron County

  • Guelph - Erin - Southern Wellington County

  • Hanover - Dundalk - Southern Grey County

  • Kitchener - Cambridge - Region of Waterloo

  • Listowel - Milverton - Northern Perth County

  • London - Parkhill - Eastern Middlesex County

  • Mount Forest - Arthur - Northern Wellington County

  • Niagara Falls - Welland - Southern Niagara Region

  • Rodney - Shedden - Western Elgin County

  • Saugeen Shores - Kincardine - Southern Bruce County

  • Simcoe - Delhi - Norfolk

  • St. Catharines - Grimsby - Northern Niagara Region

  • St. Thomas - Aylmer - Eastern Elgin County

  • Stratford - Mitchell - Southern Perth County

  • Strathroy - Komoka - Western Middlesex County

  • Wingham - Blyth - Northern Huron County

  • Woodstock - Tillsonburg - Oxford County

A heat event is expected on Wednesday and Thursday. Daytime high temperatures are expected to reach 30 to 33 degrees Celsius, beginning Wednesday afternoon. Humidex values will likely be near 40. Overnight low temperatures are expected to be 20 to 22 degrees Celsius, providing little relief from the heat. Hot and humid conditions will persist into Thursday, however, locales that receive showers and thunderstorms may be slightly cooler. Conditions will improve Thursday evening. 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. Drink plenty of water even before you feel thirsty and stay in a cool place. Never leave people or pets inside a parked vehicle. 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 or tweet reports using #ONStorm.


Recent Posts

See All
bottom of page