More than a third of all Americans, or 131 million people, are living in cities with unhealthy levels of air pollution. That鈥檚 according to the American Lung Association鈥檚 latest 鈥溾�� report, an annual 鈥渞eport card鈥� of air quality nationwide.
Spikes in deadly particle pollution are the most severe they鈥檝e been in the organization鈥檚 25-year history of producing the report, which uses pollution data compiled by the Environmental Protection Agency.
鈥淐limate change is causing more dangerous air pollution,鈥� Harold Wimmer, president and CEO of the American Lung Association, said in a press release. 鈥淓very day that there are unhealthy levels of ozone or particle pollution means that someone 鈥� a child, grandparent, uncle or mother 鈥� struggles to breathe. We must do more to ensure everyone has clean air.鈥�
The 鈥淪tate of the Air鈥� measures three types of pollution: short-term particles, like wildfire smoke; year-round particles, like pollution from industrial plants; and ground-level ozone pollution, or smog.
In the Mountain West, several cities were among the 25 most polluted in at least one pollution category. Las Vegas and Reno ranked in all three categories.
鈥淲hat's really killing us is the fires,鈥� said Matthew Strickland, an environmental epidemiologist at the University of Nevada, Reno. 鈥淎nd so there's real concerns about everything from respiratory disease to cardiovascular disease to actually a wide range of potential health impacts, like mortality.鈥�
Notably, a few Mountain West cities have some of the nation鈥檚 cleanest air in the year-round particle pollution category. That includes Casper, Wyoming (2nd), Cheyenne, Wyoming (6th), Colorado Springs (8th), St. George, Utah (9th), and Grand Junction, Colo. (12th).
This story was produced by the Mountain West News Bureau, a collaboration between Wyoming Public Media, Nevada Public Radio, Boise State Public Radio in Idaho, KUNR in Nevada, 萝莉少女 in Colorado and KANW in New Mexico, with support from affiliate stations across the region. Funding for the Mountain West News Bureau is provided in part by the .