A new report on air quality across the U.S. offers a cloudy prognosis on the long-term health of about 156 million residents who live in areas that received an "F" in smog and soot pollution.

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