Air quality has taken a serious hit across the United States as a two-fold blow of wildfires in the West and in Canada have ...

Researchers found that wildfire smoke can raise ozone to dangerous levels, posing hidden health risks even in remote areas.

Detroit currently is ranked third worst worldwide for major city air quality today, Aug. 4, because of smoke from Canadian ...

Wildfire smoke from the Bear Gulch Fire could create “unhealthy or hazardous” air quality conditions in Mason County over the ...

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

"Wildfire smoke is associated with many of the same health effects that we know for all kinds of outdoor air pollution," UC Berkeley Assistant Professor of Environmental Engineering and Health ...

GRAND JUNCTION, Colo. (KJCT) - Air quality is still a big concern, and things may get worse before they get better.

Across the state, Oregon’s air is getting harder to breathe. The number of days the air quality index was unhealthy for ...

While the smoke is worst along the Western Slope where the fires are burning, levels are also fluctuating on the Front Range.

PHILADELPHIA (WPVI) -- Smoke particles from Canadian wildfires are causing air quality concerns in the Philadelphia region on ...

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

An air quality alert is in effect for all of Massachusetts as smoke from Canadian wildfires descends into the Boston area.