Heavy surface smoke from wildfires in Canada is drifting across Minnesota on Monday, with unhealthy air quality levels ...

Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada ...

Wildfires in Canada are sending heavy smoke across the northern U.S., and New Jersey is experiencing some unhealthy air ...

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 lingering over the northern U.S., spreading across to roughly a dozen states ...

With hundreds of wildfires burning across Canada, smoke has drifted into the northern United States, lowering air quality ...

Another air quality alert is in effect Tuesday for NYC, western Long Island, the Hudson Valley, northwest New Jersey and ...

The air quality in several U.S. states is taking a hit as smoke floats over the border from the Canadian wildfires. Here's ...

The Midwest saw some of the worst air quality conditions in the world Thursday, and similar conditions are expected to ...

Step outside and you'll probably smell it—smoke has been a major issue across much of Eastern Canada this weekend. Montreal ...

The Air Quality Index monitor near Negaunee, in Marquette County, was at 86 Friday, May 30, in the moderate range.