Most polluted cities based on PM2.5 concentration globally 2023

Published by Ian Tiseo, Mar 25, 2024
The city of Begusarai in northeastern India had the highest air pollution in the world in 2023, with an average PM2.5 concentration of nearly 119 micrograms per cubic meter of air (μg/m³). Most of the cities with the highest PM2.5 concentration are located in India, including New Delhi, which was the most polluted capital city in the world in 2023.

Average PM2.5 concentration in the most polluted cities worldwide in 2023 (in micrograms per cubic meter of air)

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Release date

March 2024

Region

Worldwide

Survey time period

2023

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