Delhi Air Pollution: Delhi’s air quality remained in the 'very poor' category on Sunday morning, with a thick layer of smog engulfing parts of the national capital. The overall Air Quality Index (AQI) was recorded at 355 at 9 am, according to the System of Air Quality and Weather Forecasting and Research (SAFAR).

In an effort to tackle the persistent pollution, the Delhi government tested ‘drone-based mist spraying’ at Anand Vihar, one of the city’s pollution hotspots, on November 8. The drones, which can carry up to 15 liters of water,