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

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

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

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

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

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

Bill Kelly says the Philadelphia region will have hazy and smoky skies on Tuesday but it won't be too warm or humid. Here's ...

Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada ...

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

The thick plumes of smoke in Canada are being driven southward into the U.S. by northerly winds on the backside of an area of high pressure.

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