air quality

The report, spanning several years of data, measured ozone and particle pollution, which are the two most common air pollutants.

The rising number of fires hamper decades of environmental efforts, and over 40% of Americans — more than 137 million people — live in places with poor air quality, a new report says.

Last month’s rainfall brought a welcome reprieve to Montana’s active fire season. Experts at the time, however, cautioned it was not a so-called “season-ending” event.

Tens of millions of Americans are forced to live with wildfire smoke now every year. New research shows that it's more invasive than previously thought, infiltrating homes, schools and offices.

Widespread wildfire smoke smudged the sky in parts of western and central Montana Thursday morning. A Missoula air quality specialist says it marks the…

Researchers are increasingly concerned about the public health impacts of wildfire smoke.A Montana engineer researched the efficacy and safety of an…

Three Montana counties: Lewis & Clark, Ravalli and Lincoln, rank nationally among the 25 counties most polluted by short-term or year-round particle air…

Firefighters are tackling a new wildfire that’s burning through sage and juniper in southwestern Montana. The Antelope Fire, burning about two miles north…

The deadly wildfires scorching the west coast have produced smoke that has reached the east coast and Europe. The smoke started seeping into Montana last…

The critical fire weather and poor air quality across much of Montana will last at least until the end of the week.Almost half of the state’s air…