A major pulp mill in British Columbia has been fined after racking up nearly two dozen air pollution violations.

Wildfire smoke from Canada has made for bad air quality over parts of the Upper Midwest. Most of Minnesota had “unhealthy” ...

Air quality is expected to reach the purple AQI category in northern Minnesota, which is very unhealthy for everyone.

An air quality alert for northwest Minnesota has been extended to cover the entire state and run through Monday.

EDT on Saturday, the National Weather Service reported an air quality alert in effect until Monday at noon EDT for Keweenaw, ...

EDT on Saturday, the National Weather Service reported an air quality alert in effect until Monday at noon EDT for Mason, ...

Smoke is drifting south from wildfires in Canada and a group of lawmakers had asked the Canadian ambassador about her ...

The Minnesota Pollution Control Agency has issued an air quality alert for all of Minnesota through 9 a.m. Monday morning. To reduce additional air pollutants, burning permits will not be issued or ...

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Alert statewide Sunday until ...

Residents in lower-income areas, often near highways and industrial sites, still breathe some of the dirtiest air in the ...

The Minnesota Pollution Control Agency (MPCA) has issued an air quality alert for all of Minnesota until 9 a.m. on Monday.

Heavy-duty vehicles contribute significantly to the two things that have gained notoriety for exacerbating urban air pollution—particulate matter (PM2.5) and nitrogen oxides (NOx). Thank you for ...