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Population-weighted average annual PM2.5 exposure worldwide in 2020, by region (in micrograms per cubic meter of air)

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Source

Release date

March 2025

Region

Worldwide

Survey time period

2020

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Average PM2.5 exposure worldwide 2020, by region

Published by ÌÇÐÄÆƽâ°æ Research Department, Jun 17, 2025

South Asia had the highest population-weighted PM2.5 exposure worldwide in 2020, at ** micrograms per cubic meter of air (μg/m3). By comparison, the population-weighted PM2.5 exposure in Europe that year was less than ** μg/m3. Many of the world's most polluted cities are located in South Asia.

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