Take a deep breath, because America's air is getting cleaner!
That's coming from the American Lung Association's annual "State of the Air" report.
It's based on EPA findings for 2009 through 2011.
The report shows that the three types of air pollution it tracks- ozone, short-term and year-round particle pollution-- have all declined.
The ALA's CEO credits the Clean Air Act with reducing pollutant levels.