PM2.5 — is expected to push the Air Quality Index over 100, reaching levels unhealthy for sensitive groups, including ...

Smoke from Canadian wildfires is causing air quality concerns for millions of Americans in the Midwest and Northeast.

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

Forecasters say weak winds have left Canadian wildfire smoke to linger over the U.S. Stronger winds are expected to bring ...

Smoke from hundreds of wildfires in Canada is drifting south, prompting an air quality alert in Ohio, according to a news ...

Smoke from ongoing wildfires in Canada is impacting the air quality in states across the Midwest and Northeast of the U.S.

The smoke floating over the border shared between America and Canada is now impacting air quality in states as far south as ...

An air quality advisory is in effect for New York City on Monday due to wildfire smoke from Canada, according to officials.

Wildfire smoke from the Prairies prompted special air quality statements and warnings across the country Saturday.

Hundreds of wildfires in Canada are creating unhealthy air quality conditions across the Midwest, including Michigan, where ...

Smoke from Canadian wildfires continued to degrade the air quality across several US states, including New York, Michigan, ...

Blazes across several Canadian provinces and territories pose health risks to Canadians and their southern neighbours.