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Distribution of global urban ambient particulate matter (PM2.5) pollution worldwide as of 2021, by source

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Source

Release date

August 2023

Region

India

Survey time period

2021

Supplementary notes

All annual average PM2.5 values (measured in micrograms per cubic meter: µg/m³) are population weighted.

Citation formats

Breakdown of urban PM2.5 pollution worldwide 2021, by source

Published by ÌÇÐÄÆƽâ°æ Research Department, Jan 21, 2026

The largest source of global urban ambient PM2.5 pollution is motor vehicles, with a share of ** percent. Household wood and coal burning for cooking and heating is the second-largest contributor to emissions of these harmful pollutants. Meanwhile, just under ** percent of PM2.5 pollution comes from natural sources such as dust, sea salt, and wildfires. Ambient particulate matter pollution causes millions of deaths every year around the world.

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