Toronto’s smoke warning ends while western GTA cities remain under alert

Residents across Mississauga, Brampton, Oakville, Milton, Burlington and Hamilton are still being urged to limit time outdoors as an air quality warning remains in effect due to lingering wildfire smoke.

While conditions have improved enough for Environment Canada to lift the warning for Toronto and communities east of the city, including Oshawa, Whitby and Pickering, localized smoke continues to affect parts of Peel, Halton and Hamilton.

Environment Canada says wildfire smoke continues to cause poor air quality and reduced visibility in affected areas, with conditions that can change rapidly from hour to hour and even over short distances.

Officials warn that as smoke concentrations increase, so do the health risks. Residents are being advised to limit time outdoors and consider reducing or postponing outdoor sports, recreational activities and other events until air quality improves.

Even healthy individuals may experience symptoms such as eye, nose and throat irritation, headaches or a mild cough. More serious symptoms can include wheezing, chest pain or a severe cough. Anyone experiencing a medical emergency should seek immediate medical attention.

Those most vulnerable to wildfire smoke include seniors, pregnant people, infants and young children, people with existing illnesses or chronic health conditions, and anyone who works outdoors. These groups are encouraged to reduce or reschedule strenuous outdoor activities and seek medical attention if symptoms develop.

Environment Canada also recommends keeping windows and doors closed as much as possible to help maintain cleaner indoor air. During periods of extreme heat, however, staying cool should remain a priority.

Residents can further improve indoor air quality by using the highest-quality air filter their ventilation system can accommodate or by using a certified portable air cleaner capable of filtering fine particles.

Anyone who must spend extended periods outdoors should consider wearing a well-fitting N95 or equivalent respirator to help reduce exposure to harmful smoke particles. However, officials note that masks do not eliminate all health risks associated with wildfire smoke.

Environment Canada is also encouraging residents to check on neighbours, family members and others who may be more vulnerable to the effects of poor air quality as smoky conditions continue across parts of southern Ontario.