New Delhi, Dec. 14 -- The national capital woke up to dense smog on Sunday morning as the average Air Quality Index (AQI) stood at 461 at 7 am, falling in the 'severe' category despite the Graded Response Action Plan (GRAP)-IV in effect across Delhi and the National Capital Region (NCR), according to the Central Pollution Control Board (CPCB).

A thick haze was reported in areas including Ghazipur, the ITO area, and Anand Vihar, where visibility remained severely low. According to the CPCB, several localities across the city continued to register "severe" air quality.

Bawana recorded the highest AQI of 497 at 7 am, placing it in the 'severe' category. Narela is recording an AQI of 492, and Okhla Phase 2 is recording an AQI of 474. In con...