Ontario’s air quality among most ‘unhealthy’ in Canada right now — Here’s where it’s the worst Downtown Ottawa, Belleville and London had the worst air, according to Ontario’s Air Quality Health Index ...

London's air quality is at high risk levels for people with respiratory issues as smoke from forest fires in northern Ontario and Quebec continue to hang over the region.

As the air in the London area began to turn hazy and smell like a campfire at about 2:45 p.m. Tuesday, the air quality health index was at four, deemed a moderate risk, Environment Canada said.

A special air quality statement remains in effect for London, Middlesex, Elgin, Grey-Bruce, Huron-Perth, Sarnia-Lambton, Waterloo-Wellington, Windsor-Essex and Chatham-Kent.

Wildfire smoke blowing into Ontario has dropped air quality to poor levels, ... rivalling the GTA's record-lowest average AQI over a 24-hour period and breaking that very record in London. ...

Environment Canada is warning about poor air quality in southwestern Ontario because of forest fires in the northwest part of the province. The weather agency is warning of "elevated particulate ...

Areas under an air quality statement stretch along southern Ontario from Windsor and London, through the Greater Toronto Area to just outside of Ottawa. Areas north through Barrie, cottage country ...

Environment Canada issued a special air quality statement for London, Chatham-Kent and Middlesex, Elgin and Lambton counties on Tuesday night, warning of high levels of air pollution from forest ...

Wildfire smoke blowing into Ontario has dropped air quality to poor levels, but conditions will finally improve come Sunday as a centre of high pressure moves east. ... rivalling the GTA's ...

Wildfire smoke blowing into Ontario has dropped air quality to poor levels, but conditions will finally improve come Sunday as a centre of high pressure moves east Prolific smoke that’s blown ...

Prolific smoke that’s blown across North America and beyond over the past couple of weeks will bring reduced air quality to southern Ontario through Saturday, with an improvement expected on Sunday..