Visalia is once again the worst for ozone in the U.S., a pollutant impacting millions more people nationwide, the American ...

A new report on air quality across the U.S. offers a cloudy prognosis on the long-term health of about 156 million residents ...

Key information 46% of Americans live in places with hazardous air ...

The LA area is once again the worst for ozone in the U.S., a pollutant impacting millions more people nationwide, the ...

A new study led by a team of scientists from Switzerland and China suggests that changes in the amount of sunlight reaching ...

The metro area ranked 15th overall for levels of smog, according to a new analysis from the American Lung Association.

Air pollution levels keep getting worse for more people in the US, according to a new report, and experts say the Trump ...

California cities nearly covered all five spots in the Top 5 Most Polluted Cities when it comes to year-round particle ...