The American Lung Association report finds that climate events are causing more people in the U.S. to breathe toxic air even as other pollution falls.

Air pollution levels keep getting worse for more people in the US, according to a new report, and experts say the Trump administration’s proposed deregulation plans will make it even harder for people to get clean air.

A new American Lung Association report shows that 156 million people live in areas with unhealthy air. The group’s annual "State of the Air" report found that smog and soot pollution are getting worse, not better.