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

Air quality remains poor in parts of Canada as wildfire smoke travels along the jet stream — with Europe now in its path.

Canada is battling more than 700 active wildfires across the country, roughly two-thirds of which are burning out of control, ...

Having breathing trouble today? Canadian wildfire smoke is drifting across Ohio today, dropping the air quality in parts of ...

Wildfire smoke from Canada has prompted officials to place the Lehigh Valley and surrounding counties under an air quality ...

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 ...

Red flag warnings remain in place for parts of Nevada, Utah, Colorado and Wyoming due to very dry conditions, low humidity ...

Because of all of the smoke, the Pennsylvania Department of Environmental Protection has declared a Code Orange Air Quality ...

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.

Each New England state has seen an uptick in the number of days over the last five years when fine particulate matter (PM2.5) ...

A number of factors are now contributing to a "tipping point" on climate change and Canada's forests that the expert said ...

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