Tue. Jul 29th, 2025

A heat warning has been issued by Environment Canada for Southern Ontario and Quebec, effective immediately. The warning is in response to a prolonged period of hot and humid weather, with temperatures expected to reach highs of over 30 degrees Celsius. The heat wave is expected to last for several days, with overnight lows providing little relief. Environment Canada is warning residents to take precautions to stay cool and hydrated, especially vulnerable populations such as the elderly and young children. The heat warning is in effect for a large portion of Southern Ontario, including the Greater Toronto Area, as well as parts of Quebec. Temperatures are expected to be highest in urban areas, where the heat island effect can make temperatures feel even hotter. Residents are advised to stay indoors during the hottest part of the day, and to seek shade or air-conditioned spaces when outside. It is also important to drink plenty of water and to avoid strenuous activities during the heat of the day. Environment Canada is monitoring the situation closely and will update the warning as necessary. The heat wave is caused by a high-pressure system that has settled over the region, bringing with it hot and humid air from the southern United States. This type of weather pattern is not uncommon during the summer months, but it can still pose a significant risk to public health. The City of Toronto has activated its heat relief plan, which includes opening cooling centers and extending pool hours. Other municipalities in the affected areas are also taking steps to help residents stay cool. In addition to the heat warning, Environment Canada is also warning of the potential for thunderstorms and heavy rain in some areas. The heat wave is expected to continue through the weekend, with temperatures slowly beginning to cool by early next week. Residents are advised to check on vulnerable neighbors and to take care of themselves during this period of extreme heat. The heat warning is a reminder of the importance of being prepared for extreme weather events, and of taking steps to protect public health and safety.

Source