The group’s annual State of the Air report tracks ozone pollution, commonly known as smog, and fine particle pollution, which can come from wildfire smoke, vehicle exhaust and industrial emissions.
This year, Phoenix ranks fourth in the nation for ozone pollution. Denver comes in eighth, followed by Las Vegas at 11th and Salt Lake City at 13th. Fort Collins (18th), Albuquerque (19th) and Boise (24th) also appear on the list.
Melissa Ramos, senior manager for clean air advocacy with the American Lung Association, said climate change is worsening air quality…