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

As of Aug. 6, there are about 750 active Canadian wildfires, with at least 190 labeled “out of control,” according to the ...

Parts of the Midwest and Northeast are experiencing poor air quality Monday as smoke from Canadian wildfires drifts into the ...

Hundreds of wildfires still burning in Canada are expected to undermine air quality across the Upper Midwest and Northeast into Tuesday.

Another day of punishing heat targets the South, while a pattern change is set to bring some relief across the Midwest and ...

The National Weather Service has sent out millions of extreme heat warnings, heat watches and heat advisory alerts this week, ...

With the wildfires not expected to slow down, a continued drop in air quality is possible for some U.S. cities, especially in the Upper Midwest, while thicker smoke has also arrived in the Northeast.

Dozens of records could fall across the South as punishing heat continues to target the region while a pattern change is set ...

A mix of snow and ice blanketed a large swath of the northern U.S. over the weekend, after a major winter storm hit parts of the Upper Midwest, the Great Lakes region and the Northeast.

The “heat dome” that has hovered over tens of millions of people in the South and Midwest this week is now spreading into parts of the Northeast on Thursday, according to the Weather Channel. A heat ...