The American Lung Association's annual State of the Air report ranks the Rochester area among the nation's cleanest cities.
To qualify, the Rochester-Batavia-Seneca Falls region had no high ozone or particle pollution days between 2019 and 2021 and was among 25 cities with the lowest year-round particle pollution levels.
The report found more than one in three Americans live in counties that had unhealthy levels of ozone or particle pollution -- even as overall, air quality improved across the nation. The most unhealthy cities are in California, Arizona, and Nevada.