According To The Central Pollution Control Board (CPCB), Delhi’s Air Quality Still Remains Under The ‘Very Poor’ Category. As Per The CPCB, The Overall AQI Of Delhi Stands At 349 As Of December 8, 7 AM. On December 7, The AQI Of Delhi, As Per The Data From The CPCB Was 320. The Formal Start Of Winter Has Resulted In “Very Poor” Air Quality In Delhi For A Few Days. Fog Engulfs The City Early In The Morning, Making Visibility Difficult.