New Delhi, Nov. 27 -- A layer of toxic smog engulfed Delhi on Thursday as the air quality continues to be in the 'very poor' category as per Central Pollution Control Board (CPCB) data, a day after the Commission for Air Quality Management (CAQM) revoked Graded Response Action Plan (GRAP) Stage III restrictions.

According to the CPCB, the national capital recorded an Air Quality Index (AQI) of 349 at 7 am, while on Wednesday, Delhi witnessed an AQI of 327 at 4 pm.

Visuals from the Anand Vihar area showed a layer of smog blanketing the region, with an AQI of 390, hovering just below the 'severe' category, which is above 400.

Wazirpur recorded the worst AQI level of 406 in the 'severe' category, along with Bawana recording 405. In contra...