Severe heat warnings have been issued across Quebec as a significant heat wave settles over Central Canada, driving temperatures into the mid-30s°C (mid-90s°F) with humidex values likely exceeding 45°C (113°F). In response, the Quebec Ministry of Education has advised schools to adopt urgent safety measures, with possible closures starting Monday, June 23.
Minister Bernard Drainville, through a post on X, shared an official letter from Stéphanie Vachon, the assistant deputy minister, urging school boards to take all necessary actions to protect students and staff. Drainville emphasized that several school service centres are already implementing measures, which may include temporary closures.
Extreme temperatures to persist across Quebec
The upcoming week in Quebec will be marked by sweltering conditions, as temperatures remain consistently in the low to mid-30s°C (86–95°F) during the day, with humidex levels pushing into the mid-40s°C (113°F) range. Overnight lows will offer little relief, hovering around 25°C (77°F)—especially dangerous for people without air conditioning.
This dangerous heat is being driven by a powerful high-pressure system over the eastern United States, pushing northward into Ontario and Quebec. The heat wave is expected to peak in intensity at the start of the week, potentially affecting several sectors including transportation, healthcare, and education.
Quebec schools face possible closures
In her message to education administrators, Vachon underlined that school boards have already been coordinating with regional public health officials, and that each district is encouraged to apply any preventive action deemed necessary, including school closures. Specific reference was made to June 23, where shutdowns may occur on a case-by-case basis, depending on the local intensity of the heat.
Widespread alerts across Central Canada
Heat warnings now cover areas stretching from Denver, Colorado and New Orleans, Louisiana all the way into Quebec, showing the massive extent of this weather event. The combination of persistent high humidity, elevated UV levels, and limited overnight cooling is contributing to a situation that requires serious attention.
Heat wave creates increased health risks
The humidex, which combines temperature and humidity, significantly elevates the risk of heat-related illnesses, especially for elderly people, children, and individuals with pre-existing health conditions. This heat wave may become one of the most intense weather events of June 2025, underscoring the growing need for climate resilience in public infrastructure, including schools.
In the meantime, residents of Quebec are experiencing one of the most challenging stretches of heat so far this year, as the region braces for several more days of unrelenting temperatures and oppressive humidity.
