Study: Delhi Most Polluted City in 2024-25, Patna Ranks Second
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Delhi Most Polluted City in 2024-25, Patna Second: Climate Trends Study
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News18•11-03-2026, 18:30
Delhi Most Polluted City in 2024-25, Patna Second: Climate Trends Study
•Delhi recorded the highest annual PM2.5 levels and prolonged 'severe' air quality in winter, making it the most polluted city in 2024-25.
•Patna emerged as the second most polluted city, experiencing persistently high PM2.5 concentrations, particularly in the eastern Indo-Gangetic Plain.
•Mumbai and Chennai saw increased annual average pollution levels in 2025, indicating a growing year-round air quality concern.
•Bengaluru and Chennai also showed signs of air quality deterioration during winter months, a new vulnerability trend.
•IIT Delhi expert Sagnik Dey called for NCAP reforms, including separate winter targets and meteorology-adjusted metrics, to improve policy effectiveness.