Commission for Air Quality Management (CAQM) on Tuesday revoked GRAP-IV anti-pollution restrictions in Delhi-NCR region following a marginal improvement in air quality. However, curbs under GRAP-I, II, and III will continue to remain in force. Delhi today recorded an average Air Quality Index (AQI) of 395 at 8 am, settling in ‘very poor’ category, according to Central Pollution Control Board.