New Delhi [India], December 31 (ANI): As the cold wave tightened its grip on northern India, the air quality dipped to the 'severe' category on the last day of the year, according to the Central Pollution Control Board data on Sunday.
The Air Quality Index was recorded above 400 at several places in Delhi including Munirka, Dwarka and RK Puram.
The AQI in Anand Vihar was recorded at 425, in Dwarka-Sector 8 it was 425, in
