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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Estimated U.S. Emissions of Particulate Matter (PM-2.5)

(million short tons)

Embedded Dataset Excel:

Dataset Excel:

table_04_49_042522.xlsx (21.03 KB)


Details may not add up to totals due to rounding in the source.


KEY: R = revised.

a Particulate matter less than 2.5 microns in size. Data include PM without condensable.

bIndustrial processes consists of chemical and allied product manufacturing, metals processing, petroleum and related industries, and other industrial processes; solvent utilization; and storage and transportation.

c Due to the impact of COVID-19, full data collection and analysis of this category could not be completed on schedule.


U.S. Environmental Protection Agency, Air Emissions Inventories, Air Pollutant Emissions Trends Data, National Tier 1 CAPS Trends, available at as of Apr. 25, 2022.