The Minnesota Pollution control agency has issued an air quality alert for all of northern Minnesota, it's expected to reach ...

Wth the start of the annual wildfire season, wildfires have been ravaging Canada with smoke entering the U.S. and enveloping ...

Mapped: Canada’s wildfires are impacting air quality in these US communities - Dangerous wildfire smoke has tinged skies over ...

Air quality alerts and advisories have been issued in multiple states as Canadian wildfire smoke continues to spread.

The U.S. Air Quality Index (AQI) is the Environmental Protection Agency’s tool for reporting outdoor air quality and health.

Parts of the Midwest and Northeast U.S. have been dealing with lowered air quality thanks to smoke from wildfires in Canada.

Iowans — especially those with heart and lung disease — should avoid long or intense activities and take extra breaks during strenuous activity outdoors in areas where air quality is rated unhealthy.

Smoke from Canadian wildfires is beginning to worsen air quality in the eastern U.S. as several Midwestern states battle ...

To check your state's air quality, visit AirNow's website, and plug in your zip code, city or state. Here's what to know as ...

Smoke from Canadian wildfires carried another day of poor air quality south of the border, where conditions in parts of Minnesota, Wisconsin and Michigan were rated 'very unhealthy' Tuesday.

Smoke from Canadian wildfires carried another day of poor air quality south of the border to the Midwest, where conditions in ...

She helped form the scientific rationale for current national air-quality standards. The situation is “off the map of traditional sources of air pollution” and doesn’t fit the national standards, ...