120 counties exceed new PM2.5 air pollution standard
Among 500-plus U.S. counties with air monitoring, 120 fail to meet the new PM2.5 standard of 9 micrograms per cubic meter of air based on 2020-2022 data. The previous standard was 12.
US map showing counties where PM2.5 levels exceed the new federal standard in Alabama, Alaska, Arizona, California, Florida, Georgia, Idaho, Illinois, Indiana, Kansas, Kentucky, Louisiana, Michigan, Mississippi, Montana, Nevada, New Jersey, New Mexico, Ohio, Oklahoma, Oregon, Pennsylvania, Tennessee, Texas, Utah, Washington and Wisconsin.
