Smoke from Canadian wildfires will persist across most of central and eastern Pennsylvania throughout Tuesday.

The Pennsylvania Department of Environmental Protection has issued a Code Orange Air Quality Alert for all counties in the ...

An air quality alert was issued by the National Weather Service in Mount Holly at 9:39 a.m. on Monday, Aug. 4.

At 5:06 p.m. on Monday, the National Weather Service reported an updated air quality alert in effect until Wednesday at ...

Particulate matter from Canadian wildfire smoke is expected to affect several counties in the 69 News viewing area.

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

A 'code orange' exists when the air quality index is greater than 100. As of the early afternoon, much of the area remained ...