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Air quality statement issued for Hamilton and area
The Air Quality Health Index is expected to be as high as seven, or high risk, according to Environment Canada.
How to read Environment Canada's air quality index
Wildfire season is upon us, and smoke is reducing air quality through swaths of the country. Environment Canada suggests people check the Air Quality Health Index daily to determine how much time to spend outside.
The Canadian Press on MSN1d
How to read Environment Canada's air quality index and find out if you're at risk
Wildfire season is upon us once again, and smoke is reducing air quality through swaths of the country. Environment Canada suggests people check the Air Quality Health Index daily to determine how much time to spend outside.
Air quality in Toronto among worst in the world Monday, as Environment Canada issues warning for GTA
Parts of the Greater Toronto Area (GTA) are under an air quality warning on Monday alongside an ongoing heat warning in the region, Environment Canada says.
Air quality warning for Toronto downgraded, though still among worst in world
Environment Canada is warning of poor air quality and extreme heat in Toronto on Monday as southern Ontario braces for a week filled with hot and humid weather.
Canada wildfire smoke triggers heat wave and poor air quality warnings in Toronto and the GTA; check who are at risk
Toronto and the GTA are under a heat wave and poor air quality warning issued by Environment Canada on July 14, 2025, due to wildfire smoke from northern Ontario. The poor air quality is expected to persist from Monday into Tuesday.
NOW Toronto1d
Environment Canada issues air quality and heat warning amid heatwave
As extreme heat continues to cast over the city of Toronto, Environment Canada is warning of poor air quality on Monday.
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