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Air Quality

Delhi Has The Worst Air Quality In The World

India

A World Health Organization report released on May 2 found that Delhi has the worst air quality in the world. India's capital was found to have a heavy presence of PM10 particular matter - 292 micrograms per cubic meter. The annual safe limit set by the WHO is 60. While 13 Indian cities are among the 20 most-polluted worldwide, the following infographic provides an overview of how Delhi compares to other major global cities.

Description

This chart shows the average concentration of fine PM10 particles in micrograms per cubic meter (selected cities).

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Average air quality index (AQI) in India in 2024, by select city
Particulate matter (PM10) concentration in ambient air in selected cities in India from 2001 to 2022 (in micrograms per cubic meter)
Most polluted cities based on PM2.5 air pollution in 2016 (in micrograms per cubic meter)
Average PM2.5 concentration in the most polluted capital cities worldwide in 2025 (in micrograms per cubic meter of air)
Average PM2.5 concentration in the most polluted cities in India in 2025 (in micrograms per cubic meter of air)
Concentration of PM2.5 across Delhi in India from 2015 to 2019 (in micrograms per cubic meter)

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