As record wildfires erupt across Canada this year, with health-threatening smoke drifting into the U.S. and as far away as ...

Air pollution levels over Redding and parts of Shasta County are close to hazardous levels at times, due to heavy Green Fire smoke and pollutants.

The Chicago area recorded ozone levels of 156 late Monday afternoon. Levels above 100 are considered unhealthy. Residents ...

The Illinois Environmental Protection Agency has issued an Air Pollution Action Day for Tuesday, July 15. Here's what to know ...

Officials warn southeast Michigan residents to be careful outdoors Tuesday because of expected high ozone pollution levels.

Many communities in Arizona, Michigan, Illinois, New York and across North America are experiencing poor air quality due to ...

With parts of Manitoba, Ontario and Quebec under air quality alerts due to wildfire smoke, Dr. Christopher Carlsten with the Air Pollution Exposure Lab says exposure can cause symptoms even among ...

Northern Minnesota and northern Wisconsin remain under an Air Quality Alert Monday due to wildfire smoke. Conditions are ...

The National Weather Service reported an air quality alert at 12:35 p.m. EDT on Monday in effect until Wednesday at midnight ...

Smoke from wildfires in Manitoba, a Western province facing its worst fire season in 30 years, has created hazardous air ...

Unhealthy air has invaded Minnesota, Wisconsin and North Dakota early this week as a new round of wildfire smoke from Canada ...

Here are three health effects to keep an eye on when Canadian wildfire smoke overtakes the area: According to Northeast ...