An Air Pollution Action Day was called Wednesday morning for the Chicago area and is in effect until midnight, weather ...

Wildfires scorching several Canadian provinces have driven at least 33,400 people from their homes, with smoke now reaching ...

Canadian mining company Hudbay Minerals said on Wednesday it had temporarily suspended operations in Snow Lake, Manitoba, due ...

Firefighters have suppressed the large fire that broke out in north-central Oregon a week ago, as well as a small fire that ...

Parts of central Pennsylvania are under a code orange air quality alert, but the Midwest is seeing bigger air quality ...

When the threat of wildfires forced power shutoffs in Calistoga, California, it meant firing up dirty diesel generators.

More than 25,000 residents in three provinces have been evacuated as dozens of wildfires remained active Sunday and ...

L.A. suffered its largest quarterly construction-cost jump in a database that dates to 2013 and the first quarter’s biggest ...

Michigan, Wisconsin and Minnesota are already seeing air quality deteriorate because of smoke from the fires in Manitoba and ...

A gray haze from wildfire smoke could be seen in Cincinnati, and the entire state of Minnesota is under an air quality alert.

Smoke from more than 100 wildfires blazing in Canada is expected to spread to impact air quality in more U.S. state.

Dozens of wildfires remained active Sunday and diminished air quality in parts of Canada and the U.S., according to officials ...