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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Number of people 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 July 22, 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 July 22, 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: July 22, 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 July 22, 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/