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

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

Millions of people across the Upper Midwest and the Northeast are under air quality alerts Monday, as smoke from wildfires in ...

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

She explained that air quality is largely influenced by wind patterns. With wildfires burning in central Canada, ...

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

With hundreds of wildfires burning across Canada, smoke has drifted into the northern United States, lowering air quality across roughly a dozen states.

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

Close the windows and turn on the air conditioner, if you have one, setting it to circulate the indoor air. Use blankets to ...

The mid-Hudson Valley is expected to have an air quality index of 101 Aug. 4, which is unhealthy for at-risk groups.

Syracuse, N.Y. -- Smoke streaming in from still-burning wildfires in Canada will lead to unhealthy air quality today across ...