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 ...

Much of Central Canada, Manitoba and Saskatchewan were placed under special air quality statements or warnings on Monday due to smoke from wildfires, as Environment Canada advised residents to limit ...

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.

Parts of Ontario experienced some of the worst air quality in the world Monday due to wildfire smoke. Learn if health ...

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

Major fires continue to burn in Arizona and across Canada, impacting the air quality for millions of people. An air purifier can help, but it depends on the filter.

With parts of Manitoba, Ontario and Quebec under air quality alerts due to wildfire smoke, Dr. Christopher Carlsten with the ...

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

Some estimates have pegged there to be roughly 100 waterfalls across the city.