A Centre for Science and Environment (CSE) analysis reported by The Times of India reveals Delhi's annual PM2.5 concentration rose by 3.4% to 104.7 micrograms per cubic metre in 2024, reversing a declining trend seen from 2018 to 2022.

The winter PM2.5 average for October-December 2024 was 178.3 micrograms per cubic metre, a 4.6% rise compared to the 2021-23 average. The number of good air quality days fell from 152 in 2023 to 121 in 2024.

CSE researchers warns that inadequate implementation of Supreme Court directives on energy transition in transport and industry sectors risks derailing Delhi’s air quality progress.

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