Bengaluru, Aug. 21 -- Bengaluru Urban has been named one of the top five districts in India with the highest air pollution caused by diesel generator (DG) sets, according to a new study released at the India Clean Air Summit 2025.

The study, titled 'Switch on, Smoke off: Reducing Emissions from Diesel Generator Sets', was published by the Bengaluru-based think tank CSTEP (Center for Study of Science, Technology and Policy).

Other districts with high levels of harmful PM2.5 emissions from DG sets include Patna (Bihar), Mumbai (Maharashtra), Gautam Buddha Nagar (Noida, Uttar Pradesh) and North 24 Parganas (West Bengal).

PM2.5 refers to fine particles in the air that are smaller than 2.5 micrometres. These pollutants can enter the lungs a...