Global air pollutant emissions 1990-2022, by type

Published by Ian Tiseo, Jun 13, 2025

Global emissions of carbon monoxide (CO) decreased by roughly ** percent between 1990 and 2022, to *** million metric tons. By volume, CO is the most produced air pollutant worldwide among major types. It is a product of the incomplete burning of carbon in fuels from a variety of sources, including motor vehicles, boilers, and certain industrial processes.

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Annual emissions of air pollutants worldwide from 1990 to 2022, by type (in million metric tons)

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Release date

2025

Region

Worldwide

Survey time period

1990 to 2022

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Topics

Global air pollutionEnvironmental pollution worldwideEnvironmental pollution in the U.S.Air pollution in the U.S.Air pollution in Europe
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