Wildfires Are Reversing Years of US Air Quality Gains, Study Finds

Wildfires have worsened ozone levels across the United States so much over the last decade that they have reversed around four years of progress, a new study has found. Surface ozone levels, or smog concentrations, steadily increased from 2015 to 2024, deteriorating air quality across the Midwest and Western U.S., researchers at the University of […]