Multiple U.S. states and Canadian provinces are experiencing poor air quality from wildfire smoke. Here's where.

Toronto is seen Monday; the Air Quality Health Index rating for the city was higher than 10, or "very high risk," from ...

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Wildfire smoke has been blowing into the city since Sunday though residents should should expect some relief by early morning ...

World Cup being hosted by Canada, Mexico and the United States is less than a year away and FIFA’s protocols for matches ...

With various air quality indexes available, and as wildfire smoke becomes an increasing health risk, here’s what often goes ...

Wildfire smoke from Western Canada has created poor, unsafe air quality readings from northern Ontario to the Greater Toronto Area (GTA) and other areas in the province this week. Widespread, special ...