Nearly 40% of people in the US live with unhealthy air pollution, report says

Why San Luis Obispo County gets poor grades in air quality report

According to the American Lung Association, year-round exposure to particle pollution can trigger illness, hospitalization, and premature death

Stark County gets 1 failing, 1 passing grade from American Lung Association on air quality

Stark County's air quality has improved over the past decade but there's still room for improvement, according to the American Lung Association.

What landed Fargo on the list of U.S. cities with the worst short-term particle pollution?

The Fargo-Moorhead area is ranked 24th of the 25 U.S. cities with the worst short-term particle pollution, which is caused by factories, power plants, vehicle emissions and fires.

These Iowa metros have the cleanest air in U.S., says new report. See air quality near you.

The American Lung Association's report ranked the cleanest and most polluted cities across America. What are the causes and effects of air pollution?

American Lung Association rates Mountain State air as "good"

Kanawha and Monongalia counties received good scores.

Sacramento got an F in air quality on American Lung Association report card. Here’s why

The capital city is among the top 10 most polluted metropolitan areas in the nation, the nonprofit says.