Despite improvements in air quality in past decades, 156 million Americans still breathe in too much soot or ozone, says the annual State of the Air report from the American Lung Association.

A new report from the American Lung Association notes a drastic decline in air quality and raises health alarms. Climate change and Trump administration actions, experts warn, will worsen the trend.

American Lung Association report found that about 156 million people live in counties plagued by high levels of ozone and fine particulate matter