Canadians are once again facing a double threat of extreme heat and deteriorating air quality as warnings are issued across the country. Environment Canada has extended its heat and air quality alerts, covering areas from Regina and Winnipeg to northern and southern Ontario, and into Quebec. Orange alerts, indicating the most severe conditions, have been issued for Winnipeg and Thunder Bay, with parts of northern Quebec also under similar advisories.
The heat event is expected to bring temperatures exceeding 35 degrees Celsius, with humidex values potentially reaching the mid-40s. Overnight lows are also remaining high, failing to drop below 18 degrees. This persistent heat, combined with smoke from wildfires, is contributing to poor air quality in several regions. Residents in areas like Oshawa are being advised to limit outdoor activities, with potential symptoms including eye irritation, headaches, and mild coughs.
In western Canada, regions like Whitehorse and Yellowknife are under yellow air quality warnings. The widespread extreme weather comes as parts of the Prairies recently experienced a record number of tornadoes fueled by intense heat. Experts note that such patterns are becoming more frequent, with climate change potentially exacerbating these events. Canadians are urged to stay hydrated, limit strenuous outdoor activities during peak heat, and monitor air quality reports for their local areas.
