A number of states in the United States have declared air quality warnings with concerning levels noted across many of the ...

Smoke from hundreds of wildfires in Canada is lingering over the northern U.S., spreading across to roughly a dozen states ...

Air quality alerts are in place for portions of 10 states from Minnesota to Delaware as officials warn the smoke may become dangerous for sensitive groups.

Large wildfires in remote regions of Canada sent smoke billowing across the border, inundating northern New England with ...

The air quality index on Tuesday across the Midwest and the Northeast ranged from "moderate" to "unhealthy" for sensitive adults. Some areas in northern Wisconsin, eastern Pennsylvania, northern ...

Smokey skies have become common in Michigan lately, thanks to the wildfires burning in the western U.S. and Canada.

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