There were stark regional differences in how emissions of air pollutants changed worldwide between 1990 and 2022. While emissions of most air pollutants have fallen across Europe and North America over the last three decades, those in Africa and Asia have seen considerable increases.
For example, nitrogen oxides (NOx) emissions in Africa and Asia increased by ***and ***percent between 1990 and 2022, respectively. In comparison, NOx emissions in both Europe and North America were cut by around ** percent. NOx pollution is emitted by a range of sources and activities, including road vehicles and boats, as well as industrial sources such as power plants.
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OWID. (February 12, 2025). Regional changes in emissions of air pollutants worldwide in 2022 relative to 1990 levels, by type (in percent) [Graph]. In Statista. Retrieved June 26, 2025, from https://www.statista.com/statistics/1476695/change-in-air-pollutant-emissions-by-type-worldwide-by-region/
OWID. "Regional changes in emissions of air pollutants worldwide in 2022 relative to 1990 levels, by type (in percent)." Chart. February 12, 2025. Statista. Accessed June 26, 2025. https://www.statista.com/statistics/1476695/change-in-air-pollutant-emissions-by-type-worldwide-by-region/
OWID. (2025). Regional changes in emissions of air pollutants worldwide in 2022 relative to 1990 levels, by type (in percent). Statista. Statista Inc.. Accessed: June 26, 2025. https://www.statista.com/statistics/1476695/change-in-air-pollutant-emissions-by-type-worldwide-by-region/
OWID. "Regional Changes in Emissions of Air Pollutants Worldwide in 2022 Relative to 1990 Levels, by Type (in Percent)." Statista, Statista Inc., 12 Feb 2025, https://www.statista.com/statistics/1476695/change-in-air-pollutant-emissions-by-type-worldwide-by-region/
OWID, Regional changes in emissions of air pollutants worldwide in 2022 relative to 1990 levels, by type (in percent) Statista, https://www.statista.com/statistics/1476695/change-in-air-pollutant-emissions-by-type-worldwide-by-region/ (last visited June 26, 2025)
Regional changes in emissions of air pollutants worldwide in 2022 relative to 1990 levels, by type (in percent) [Graph], OWID, February 12, 2025. [Online]. Available: https://www.statista.com/statistics/1476695/change-in-air-pollutant-emissions-by-type-worldwide-by-region/
