The PM2.5 assessment for 2025 ranks Byrnihat (Assam), Delhi, and Ghaziabad (Uttar Pradesh) as India’s top three most polluted cities with annual concentrations of 100 g/m³, 96 g/m³, and 93 g/m³, respectively.
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44 pc Indian cities face chronic air pollution, only 4 pc covered under NCAP: Report
January 12, 2026The PM2.5 assessment for 2025 ranks Byrnihat (Assam), Delhi, and Ghaziabad (Uttar Pradesh) as India’s top three most polluted cities with annual concentrations of 100 g/m³, 96 g/m³, and 93 g/m³, respectively.