Stanislaus County residents continue to breathe some of the worst air in the nation, according to the American Lung Association’s State of the Air 2018 report. The Modesto-Merced region made the top 10 list for worst air quality in the nation in all three categories: ozone, short-term pollution and year-round pollution. Stanislaus County had 32 unhealthy air days because of ozone pollution (two more than last year) and 19 due to particle pollution and as such earned an F grade from the American Lung Association.
Valley air among worst in nation
