Smoke from Canadian wildfires is causing air quality concerns for millions of Americans in the Midwest and Northeast.

Smoke from hundreds of wildfires in Canada is drifting south, prompting an air quality alert in Ohio, according to a news ...

Smoke from Canadian wildfires continues to affect air quality across the Midwest, though Monday’s conditions were an ...

Northeast Ohio is under an air quality alert until midnight Monday. Here's what's causing the poor air quality and how to ...

Millions of people across the Upper Midwest and the Northeast are under air quality alerts Monday, as smoke from wildfires in ...

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

The Wisconsin Department of Natural Resources re-extended its air quality alert statewide as wildfire smoke lingers.

The Pennsylvania Department of Environmental Protection declared a continuation of its “Code Orange” Air Quality Action Day ...

Minneapolis had the fifth worst air quality among 125 cities worldwide on Saturday morning, according to an international air ...

The mid-Hudson Valley is expected to have an air quality index of 101 Aug. 4, which is unhealthy for at-risk groups.

The smoke floating over the border shared between America and Canada is now impacting air quality in states as far south as Texas, AirNow's data shows. The EPA has declared the air quality in states ...

Smoke from ongoing Canadian wildfires has led to some of the worst air quality in the world across parts of the U.S.