The “State of the Air” report — produced by the American Lung Association — indicates that all three of the types of air pollution it tracks are decreasing, CNN reports.
The report — which has been tracking air pollution for 14 years — measures both year-round and short-term particles in the air as well as ozone. All three present widespread threats to people’s health. High levels of any of them can lead to asthma, heart problems and even death.
Credited to the Clean Air Act, the improved air quality in the U.S. is already saving the country money, too. The Environmental Protection Agency estimates that by 2020, the annual savings will be more than $2 trillion per year in lower healthcare costs.
“We are happy to report that the state of our air is much cleaner today than when we started the report 14 years ago,” said Harold Wimmer, CEO of the American Lung Association.