Particulate matter emissions produced by road vehicles in the United States have fallen considerably in recent decades. Between 2005 and 2023, PM10 emissions from road vehicles fell ** percent to ** tons, while PM2.5 emissions fell by ** percent to * tons during the same period. PM2.5 refers to atmospheric particulate matter that have a diameter of less than *** micrometers. They are usually composed of acids, organic chemicals, metals, and soil or dust particles, and are hazardous to human health.
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Environmental Protection Agency. (February 9, 2024). Annual PM2.5 and PM10 emissions from road vehicles in the United States from 2005 to 2023 (in 1,000 tons) [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 28, 2026, from /statistics/1234827/road-transportation-of-particulate-matter-emissions-us/
Environmental Protection Agency. "Annual PM2.5 and PM10 emissions from road vehicles in the United States from 2005 to 2023 (in 1,000 tons)." Chart. February 9, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 28, 2026. /statistics/1234827/road-transportation-of-particulate-matter-emissions-us/
Environmental Protection Agency. (2024). Annual PM2.5 and PM10 emissions from road vehicles in the United States from 2005 to 2023 (in 1,000 tons). ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 28, 2026. /statistics/1234827/road-transportation-of-particulate-matter-emissions-us/
Environmental Protection Agency. "Annual Pm2.5 and Pm10 Emissions from Road Vehicles in The United States from 2005 to 2023 (in 1,000 Tons)." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 9 Feb 2024, /statistics/1234827/road-transportation-of-particulate-matter-emissions-us/
Environmental Protection Agency, Annual PM2.5 and PM10 emissions from road vehicles in the United States from 2005 to 2023 (in 1,000 tons) ÌÇÐÄÆƽâ°æ, /statistics/1234827/road-transportation-of-particulate-matter-emissions-us/ (last visited July 28, 2026)
Annual PM2.5 and PM10 emissions from road vehicles in the United States from 2005 to 2023 (in 1,000 tons) [Graph], Environmental Protection Agency, February 9, 2024. [Online]. Available: /statistics/1234827/road-transportation-of-particulate-matter-emissions-us/
