On this June 21, summer is not just starting on the calendar: he settled for good with a first overwhelming heat wave expected in eastern Canada.
To the highest point of this heat wave in Ontario and Quebec, The humidx will reach values between 40 and 45 Monday and Tuesday
says Rebecca Cyr, meteorologist for Environment Canada.
The hot air masses promote the formation of violent thunderstorms. There are also alerts for the Outaouais and for regions east of Lake Huron in Ontario on Sunday since there could be gusts of wind up to 90 km/h.
Temperatures will start to be uncomfortable
From Sunday in eastern Ontario and in southern Quebec, according to Ms. Cyr, because Mercury could climb to 29 ° C and the heat felt could be 37.
What is humidex?
During a heat wave or a heat wave, humidx – also called wet index or wet factor – translates into a single value the heat felt by the majority of people. The higher the humidx index, the more people have an impression of discomfort and discomfort.
In winter, it’s theindex or the wind which describes the intensity of the cold perceived by people.
Source : Quebec Office of the French Language
Then, as of Monday and Tuesday, discomfort will increase with temperatures that will not drop much during the night. We will stay at the top of around twenty degrees
specifies the meteorologist.
Mercury is expected to drop under 30 degrees Celsius on Wednesday, more normal temperatures for the season.
Hydrate well during the Quebec National Day

Municipal pools and water games should be opened to the public during the heat wave.
Photo : Getty Images / ROMAIN PERROCHEAU / AFP
This heat wave arrives at the same time as the festivities of the Quebec National Day everywhere through the province.
Meteorologist Rebecca Cyr recommends Drink water often, before being thirsty
while the celebrations of Saint-Jean-Baptiste can be accompanied by alcoholic drinks which have the effect of dehydrate the body.
Recommendations during a heat wave:
- Limit your direct sunlight to the sun.
- Drink a lot of water.
- Pay particular attention to vulnerable people (elderly, children, etc.).
- Wear light clothes and a hat.
- Plan your outdoor activities at the coolest hours of the day.
- Find shadow when you have to stay outside.
In an interview to here RDI, a spokesperson for the city of Montreal, Philippe Sabourin, said that the arrival of 200 rescuers for the season made it possible to open 56 outdoor swimming pools, that 100 % of the paddles are open and that the city also has 200 water games and on foggers to refresh the population.
Mr. Sabourin added that the 45 municipal libraries can also be good places to find fresh air. He recalled that in the event of extreme heat, civil security could be led to door-to-door in vulnerable people and even distribute water bottles to homeless people.
An episode of extreme heat is an episode of heat where the maximum air temperature reaches or exceeds 33 ° C and where the minimum air temperature during the night is more than 20 ° C for 3 days.
Fresh places during the heat episodes in Toronto
The city of Toronto has adopted a strategy to help the population who suffers from heat. Under the Heat Relief Strategythe city offers Toronto to go to one of the 500 public places where there is air conditioning.
During heat warnings, the opening hours of certain public swimming pools are also extended.
Social speaker Diana Chan McNally says that the city must restore the islets of freshness for itinerants. She is worried about the next episode of heat. We expect people without home to find the places fresh for themselves
she said.
However, without spaces provided for this purpose, some people will go to a paddling pool or to the swimming pool, where they will probably be stigmatized, or we will not accept their presence in shopping centers, where they could be the subject of profiling
explains Ms. Chan McNally.
It also asks the municipality to implement a hydration strategy in order to deliver bottles of water to itinerants.
With information from CNN