Environment Canada has issued a heat warning for Ontario’s Guelph and Waterloo Region with hot and humid conditions expected to last until Sunday.
Daytime high temperatures are expected to be between 31 C and 34 C, while overnight low temperatures are expected to be between 20 C and 24 C.
The weather office says the humidex values are expected to be in the high low 40s by Sunday.
Slightly cooler and less humid conditions are expected by Monday, the agency said.
The daily email you need for
Guelph's top news stories.
Get daily Guelph news
Get the day's top stories from Guelph and surrounding communities, delivered to your inbox once a day.
By providing your email address, you have read and agree to Global News' Terms and Conditions and Privacy Policy.
Environment Canada is reminding residents to watch out for effects of heat-related illnesses, such as swelling, rash, cramps, fainting, heat exhaustion and heatstroke.
The community is also being urged to never leave people or pets inside a parked car.