Air Quality & Environmental Planning

In 2018, the U.S. Environmental Protection Agency (EPA) designated Bexar County in marginal nonattainment for the pollutant ozone. Levels of ground-level ozone in Bexar County were exceeding National Ambient Air Quality Standards (NAAQS) set by the EPA in 2015. These standards are designed to protect human and environmental health, and ground-level ozone is monitored and targeted for reductions due to its potentially harmful effects. The Alamo Area Metropolitan Planning Organization (MPO) works in cooperation with federal, state, and local partners to ensure our community is meeting air quality requirements for on-road transportation sources.