Heat alert: Montreal to feel like 46 degrees Monday
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Environment Canada has issued a special weather statement for Montreal and parts of southern Quebec, warning of a stretch of hot and humid weather beginning Sunday.
The federal agency says a warm and moist airmass will bring daytime highs above 30 C, with overnight temperatures remaining above 20 C.
Humidex values, which is an index that combines heat and humidity to reflect how hot it feels, are expected to range from 40 to 45 for that period. According to The Weather Network, conditions will feel as hot as 46 degrees on Monday.
A heat warning and a special weather statement are currently in effect for southern Quebec. Humidex values between 40 and 45 are expected from Sunday to Tuesday. Plan your activities accordingly. For more details: https://t.co/jjao34veSH #QCstorm pic.twitter.com/1Imi1Nvter
— ECCC Weather Quebec (@ECCCWeatherQC) June 21, 2025
Environment Canada is urging residents to take precautions, which includes drinking water frequently, even before feeling thirsty, and limiting outdoor activity during the hottest parts of the day.
'Limit direct exposure to sunlight and heat,' the statement reads. 'Never leave people, especially children, or pets inside a parked vehicle. Check the vehicle before locking it to make sure no one is still inside.'
The special statement applies to the island of Montreal and other areas across southern Quebec.
The heat is expected to ease by midweek.

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