Toronto’s air quality index was at eight, or “high risk,” this morning. Environment Canada says reduced air quality can cause ...

Smoke from Canadian wildfires prompted a special air‑quality statement for Toronto and warnings nationwide, urging residents to limit outdoor time amid poor air and hazy skies.

The air quality warning for the Greater Toronto Area has been lifted after being in place over the long weekend, Environment Canada says.

Degraded and/or unsafe air quality levels will continue across parts of Canada Monday as wildfire smoke lingers. However, the ...

The Air Quality Health Index (AQHI) is a scale from 1 to 10 that measures air quality. Canadians are encouraged to use the AQHI to help them decide whether or not they should limit their time outdoors ...

Much of the Northwest Territories was blanketed in smoke on Friday, prompting Environment and Climate Change Canada and the N ...

According to the Ontario’s Air Quality Health Index (AQHI), areas that had “high risk” ratings on Friday were Belleville, Brampton, Brantford, Burlington, Cornwall, Grand Bend, Guelph, Hamilton, ...

⚠️Special Air Quality Statement has been issued for southern Ontario, including Niagara and parts of the Greater Toronto Area. Increasing ground-level ozone concentrations are the main concern.

According to the agency, the air quality index for the city on Tuesday morning was listed at the top of the scale, at 10+, or "very high risk." ...

🚨 ALERT 🚨 The Air Quality Health Index (AQHI) has reached a level of 7-10 in the HKPR District Health Unit area, indicating high-risk air pollution levels that could pose potential health risks.