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What you need to know to understand air quality warnings in Canada
In Canada, the Air Quality Health Index (AQHI) is a scale developed to help people understand what the current air quality ...
Why Toronto residents still aren’t safe from wildfire smoke indoors
Environment Canada urges residents to limit their time outdoors. But even when inside, most buildings can only reduce ...
Why the Sask. Roughriders postponed, but other sports played on: how air quality indexes work
With various air quality indexes available, and as wildfire smoke becomes an increasing health risk, here’s what often goes ...
Toronto’s air quality among worst in the world today
Environment Canada is warning of poor air quality and extreme heat in Toronto on Monday as southern Ontario braces for a week ...
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 ...