An extended heat warning issued by the city's medical officer of health on Sunday remains in effect.
The good news is that "a cool down is expected by Friday with the passage of a cold front".
The heat wave will finally come to an end on Thursday night but the reprieve from sweltering conditions may be short-lived, according to a senior climatologist with Environment Canada. Warning: "Sleeping will be tough as overnight lows refuse to drop below the 20s", tweeted The Weather Network today. This occurs when it is expected for two or more days.
High heat and humidity will return for Tuesday.
The heat wave is supposed to start on Friday and the temperatures will go up along with the humidex levels in the Maritimes and southern Ontario, and Quebec.
Extreme heat affects everyone, Environment Canada said.
In the meantime, Wednesday is stickier with a high of 34 C and humidex of 40 with an overnight low of 21 C. "The risks are greater for young children, pregnant women, older adults, people with chronic illnesses and people working or exercising outdoors", Environment Canada states.
The Canadian weather agency issues heat warnings "when very high temperature or humidity conditions are expected to pose an elevated risk of heat illnesses, such as heat stroke or heat exhaustion".
To prevent heat stress during a heat alert, Dr. Strang suggests to stay in a shaded, cool or air-conditioned area, drink plenty of water, wear light-coloured clothing and to not leave anyone or any animal unattended in vehicles.