New Delhi: Delhi's air quality deteriorated to the 'very poor' category on Friday, after marginal improvement over the last few days, with a layer of smog shrouding several parts of the city.
The city recorded a minimum temperature of 14.6 degrees Celsius, a notch above normal, according to the India Meteorological Department (IMD).
The national capital's overall Air Quality Index (AQI) stood at 331 at 9 am, Central Pollution Control Board (CPCB) data showed. (PTI)