Smoke from Prairie wildfires issued as air quality alert for northern Ontario
Poor Air Quality in Northern Ontario Due to Wildfire Smoke
Northern Ontario is currently experiencing poor air quality as a result of wildfire smoke drifting in from the Prairies. This has prompted Environment Canada to issue special air quality statements covering several areas in the region, including North Bay, Thunder Bay, and Sault Ste. Marie.
According to the Air Quality Health Index (AQHI), the air quality in these areas reached a "high risk" level of 7 on Saturday morning, August 2, 2025. The smoke has caused reduced visibility and is expected to persist at least into Sunday, August 3, 2025.
The weather agency has advised that sensitive groups, such as children, older adults, pregnant people, and those with pre-existing respiratory or heart conditions, should limit their outdoor activities and exposure. Mild symptoms reported include eye, nose, and throat irritation, headaches, and mild coughs. More serious but less common symptoms can involve chest pains and severe coughs.
Environment Canada categorizes the air quality warnings according to the AQHI, with levels around 7 triggering special air quality statements, indicating elevated health risks but not the extreme pollution levels that would require more urgent warnings (which occur at AQHI 10+ for extended periods).
The smoke originates from forest fires in the Prairies and has affected much of northern Ontario. The reduced air quality may also extend into western Quebec. To ensure safety, Environment Canada recommends rescheduling any outdoor activities or sports during this period.
It is crucial for everyone, especially vulnerable populations, to follow these recommendations to minimize health risks associated with the poor air quality. Stay updated on the latest air quality advisories from Environment Canada for the most accurate and timely information.
- The poor air quality in Northern Ontario, caused by wildfire smoke, prompted Environment Canada to issue special air quality statements for various areas, including Toronto.
- The smoke from forest fires in the Prairies has extended the poor air quality into western Quebec, potentially affecting sports activities in Toronto.
- environment-science experts are closely monitoring the climate-change effects on the increasing wildfire frequency and smoke that affects wildlife and the environment, including the cities of Canada such as Toronto.
- To minimize health risks associated with the smoke's impact on the weather, Environment Canada advises residents of Toronto to consider reducing outdoor activities like sports.
