Algoma Public Health: Heat Warning

Heat warning issued for the following areas: 

Blind River – Thessalon
Elliot Lake – Ranger Lake
Sault Ste. Marie – St. Joseph Island
Searchmont – Montreal River 
White River – Dubreuilville

Environment and Climate Change Canada has issued a yellow level warning for heat for the above locations for a heat event that is expected to begin Tuesday June 30, through to Friday July 3, 2026.

Depending on location, daytime highs of near 29 – 32 degrees Celsius. Humidex values of 36 to 41 are expected. 

IMPORTANT!
Heat warnings for additional geographical areas within Algoma may be issued by ECCC in the coming hours or days; please continue to monitor the weather in your area for additional Heat Warnings.

 

About Heat Warnings & ‘Extended’ Heat Warnings

A Heat Warning is issued when the day-time temperature is forecasted to be above 29°C and with a minimum temperature of greater than or equal to 18°C or Humidex greater than or equal to 36°C are forecasted for 2+ days.

An ‘Extended’ Heat Warning is issued when the same conditions apply above 29°C and with a minimum temperature greater than or equal to 18°C or if the humidex is greater than or equal to 36ºC for more than 3 days. 

Please continue to monitor the weather in your area for extended heat events and termination of the heat event.