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

Wildfires in Canada are sending heavy smoke across the northern U.S., and New Jersey is experiencing some unhealthy air ...

Millions of Americans across the Midwest, Northeast and swathes of the South and Southwest are under air quality alerts ...

Hazy skies descend over the New York City area again on Tuesday, re-upping some air quality alerts related to Canadian ...

Wildfire smoke drifting over the Washington, D.C., area is making the skies look hazy and negatively affecting air quality.

Smoke from hundreds of wildfires in Canada is lingering over the northern U.S., spreading across to roughly a dozen states ...

“Smoke plumes can travel quite a bit. They can travel hundreds and thousands of miles, so our air quality right now is being ...

In Grand Rapids, the Air Quality Index, which measures particle pollution in the air, was over 100 AQI six of the last seven ...

With smokey conditions likely worsening throughout Aug. 3, an air quality advisory was extended to noon Aug. 4.

Though wildfire smoke was to credit for poor air quality earlier in the week, Wednesday's alert is due to high-levels of ozone in the air.

The hazy skies in the Chicago area are the visible sign of the poor air quality on Thursday as smoke from Canadian wildfires ...

The Pennsylvania Department of Environmental Protection declared a continuation of its “Code Orange” Air Quality Action Day ...