Ozone Pollution Drops With Fewer Cars On Arizona Roads

Apr 24, 2020

Reduced traffic on the roads during the coronavirus pandemic has led to improvements in Arizona’s air quality. KNAU’s Melissa Sevigny reports.

Credit ADOT


Ground-level ozone decreased by 10 percent compared to this time last year. It’s a pollutant that can trigger health problems especially in people with asthma or other lung diseases.  

Misael Cabrera is the director of the Arizona Department of Environmental Quality. He says the decreased traffic combined with rainy weather contributed to the improvement. "We are learning as a state how to tele-commute more than we have in the past, and I think we need to carry those lessons forward, because even though… the ozone difference may be modest, every little bit counts in terms of meeting federal standards and maintaining the healthiest possible air," he says.

A report released this week by the American Lung Association named the Phoenix metro air as seventh in the nation for the worst air quality, both for ozone and for year round particle pollution.