In 2022, roughly 78 million people in the United States lived in counties that were exposed to ozone concentrations above the levels determined by the National Ambient Air Quality Standards (NAAQS).
The NAAQS were established as part of the Clean Air Act and serve as limits on pollutant concentrations for outdoor air. The pollutants covered by the NAAQS include ozone, particulate matter, lead, carbon monoxide, sulfur oxides, and nitrogen oxides.
Number of people living in counties with air pollutant concentrations above the National Ambient Air Quality Standards (NAAQS) in the U.S. in 2022, by pollutant
(in millions)
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Environmental Protection Agency. (November 1, 2023). Number of people living in counties with air pollutant concentrations above the National Ambient Air Quality Standards (NAAQS) in the U.S. in 2022, by pollutant (in millions) [Graph]. In Statista. Retrieved December 30, 2024, from https://www.statista.com/statistics/1360221/us-exposure-to-pollutant-concentrations-above-naaqs/
Environmental Protection Agency. "Number of people living in counties with air pollutant concentrations above the National Ambient Air Quality Standards (NAAQS) in the U.S. in 2022, by pollutant (in millions)." Chart. November 1, 2023. Statista. Accessed December 30, 2024. https://www.statista.com/statistics/1360221/us-exposure-to-pollutant-concentrations-above-naaqs/
Environmental Protection Agency. (2023). Number of people living in counties with air pollutant concentrations above the National Ambient Air Quality Standards (NAAQS) in the U.S. in 2022, by pollutant (in millions). Statista. Statista Inc.. Accessed: December 30, 2024. https://www.statista.com/statistics/1360221/us-exposure-to-pollutant-concentrations-above-naaqs/
Environmental Protection Agency. "Number of People Living in Counties with Air Pollutant Concentrations above The National Ambient Air Quality Standards (Naaqs) in The U.S. in 2022, by Pollutant (in Millions)." Statista, Statista Inc., 1 Nov 2023, https://www.statista.com/statistics/1360221/us-exposure-to-pollutant-concentrations-above-naaqs/
Environmental Protection Agency, Number of people living in counties with air pollutant concentrations above the National Ambient Air Quality Standards (NAAQS) in the U.S. in 2022, by pollutant (in millions) Statista, https://www.statista.com/statistics/1360221/us-exposure-to-pollutant-concentrations-above-naaqs/ (last visited December 30, 2024)
Number of people living in counties with air pollutant concentrations above the National Ambient Air Quality Standards (NAAQS) in the U.S. in 2022, by pollutant (in millions) [Graph], Environmental Protection Agency, November 1, 2023. [Online]. Available: https://www.statista.com/statistics/1360221/us-exposure-to-pollutant-concentrations-above-naaqs/
