According to the interagency center, U.S. firefighters were deployed to Canada on May 8, a month before wildfire smoke began drifting across the border and throughout the Northeast U.S.

Smoke from wildfires burning in Nova Scotia, Canada could drift down to the Philadelphia region Tuesday night. This is a projection of where it could be around 7 p.m. CBS News Philadelphia ...

The map below displays the current air quality at monitoring sites in the U.S., Canada and Mexico. Air monitoring sites are color-coded based on the pollutant (ozone or particulate matter) with ...

Air quality alerts have been issued in 20 states from Missouri to Massachusetts. Wildfires burning in Canada are continuing to create poor air quality conditions in the U.S. as the smoke makes its ...

A Newsweek map shows where smoke from hundreds of wildfires burning across Canada which have prompted mass evacuations could impact states in the U.S. Smoke and airborne pollutants can be ...