Areas where 8-hour ozone levels exceeded the federal standard (75 ppb) three or more times during three recent summers (2011-2013).

Areas where 24-hour fine particulate matter (PM2.5) levels exceeded the federal standard (35 mg/ m3) during three recent winters (2010-2012).

Areas where toxic air contaminants, fine particulate matter, and ozone are estimated to have the greatest impacts on health.

About Impacted Communities

The Community Air Risk Evaluation (CARE) program identifies areas with high concentrations of air pollution and populations most vulnerable to air pollution's health impacts. The maps, along with information about pollutants and their sources that lead to the impacts, help prioritize a broad array of actions designed to foster healthy communities via the Clean Air Communities Initiative.