Canadian wildfire smoke will lend a hazy appearance to the sky, and high clouds blanket much of the Philadelphia region, ...

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

Air quality alerts are in effect in the Philadelphia area, fueled by smoke from wildfires that are burning thousands of miles ...

When combined with the Philly area’s warm, sunny weather, the incoming smoke stands to increase levels of ozone, the ...

Expect hazy skies with reduced air quality in the Philadelphia region as smoke from Canadian wildfires is in our area. There ...

Tuesday stays warm and dry, with highs near 90 and a bit more humidity under partly cloudy skies in the Philadelphia region.

Smoke from wildfires burning across Canada are bringing hazy conditions to the area, and all of eastern Pennsylvania is under ...

Anyone who might be especially vulnerable to the effects of air pollution should limit their outdoor activities.

Wildfire smoke will continue to linger and bring a haze to parts of the area Wednesday. Expect overall cloudy and muggy ...

The heat and humidity mixed with smoke resulted in a "code orange" alert for Philly and its suburban counties.

Under a Code Orange alert, it's recommended that children, older adults and those with respiratory illnesses limit time spent ...

Smoke from widespread wildfires in Canada prompted air quality alerts across several Midwest and Northeast U.S. states this ...