Review of the Ozone National Ambient Air Quality Standards

Publication Date: 
Thursday, December 31, 2020 - 4:00am

Based on the Environmental Protection Agency's (EPA's) review of the air quality criteria and the national ambient air quality standards (NAAQS) for photochemical oxidants including ozone (O<INF>3</INF>), the EPA is retaining the current standards, without revision.

Environmental Protection Agency