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.

A new report suggests that almost half of Americans are breathing unhealthy air, and that the problem will only worsen from here.

Nearly half of Americans live in areas with dangerous levels of air pollution. This represents an increase of 25 million people compared to last year. Key information 46% of Americans live in places with dangerous air quality.