The West United States recorded the highest average concentration of particle pollution (PM2.5) in 2022, at 9.4 micrograms per cubic meter (µg/m3). This was slightly above the national average concentration of PM2.5 pollution that year, and almost double the World Health Organization guideline of five µg/m3.
Regional trends in average fine particulate matter (PM2.5) pollution levels in the United States from 2000 to 2022
(in micrograms per cubic meter)
Characteristic
Ohio Valley
Upper Midwest
Northeast
Northwest
South
Southeast
Southwest
West
Northern Rockies and Plains
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Environmental Protection Agency. (November 1, 2023). Regional trends in average fine particulate matter (PM2.5) pollution levels in the United States from 2000 to 2022 (in micrograms per cubic meter) [Graph]. In Statista. Retrieved July 22, 2024, from https://www.statista.com/statistics/1446183/united-states-pm25-air-pollution-exposure-by-region/
Environmental Protection Agency. "Regional trends in average fine particulate matter (PM2.5) pollution levels in the United States from 2000 to 2022 (in micrograms per cubic meter)." Chart. November 1, 2023. Statista. Accessed July 22, 2024. https://www.statista.com/statistics/1446183/united-states-pm25-air-pollution-exposure-by-region/
Environmental Protection Agency. (2023). Regional trends in average fine particulate matter (PM2.5) pollution levels in the United States from 2000 to 2022 (in micrograms per cubic meter). Statista. Statista Inc.. Accessed: July 22, 2024. https://www.statista.com/statistics/1446183/united-states-pm25-air-pollution-exposure-by-region/
Environmental Protection Agency. "Regional Trends in Average Fine Particulate Matter (Pm2.5) Pollution Levels in The United States from 2000 to 2022 (in Micrograms per Cubic Meter)." Statista, Statista Inc., 1 Nov 2023, https://www.statista.com/statistics/1446183/united-states-pm25-air-pollution-exposure-by-region/
Environmental Protection Agency, Regional trends in average fine particulate matter (PM2.5) pollution levels in the United States from 2000 to 2022 (in micrograms per cubic meter) Statista, https://www.statista.com/statistics/1446183/united-states-pm25-air-pollution-exposure-by-region/ (last visited July 22, 2024)
Regional trends in average fine particulate matter (PM2.5) pollution levels in the United States from 2000 to 2022 (in micrograms per cubic meter) [Graph], Environmental Protection Agency, November 1, 2023. [Online]. Available: https://www.statista.com/statistics/1446183/united-states-pm25-air-pollution-exposure-by-region/