Delhi’s air quality significantly improved after a drizzle in parts of the city on Tuesday (February 4). The Air Quality Index (AQI) was in the ‘poor’ category and was recorded at 245 at 8 am, according to the Central Pollution Control Board (CPCB). 

The AQI had been stagnating in the ‘very poor’ category for several days.

The Commission for Air Quality Management (CAQM) on Monday revoked Grap stage III restrictions after a decline was observed in the AQI. Improvement in the AQI was attributed to better weather conditions for dispersion of pollutants. 

The CAQM notification read, “The AQI of Delhi has been recorded as 286 for 03.02.2025 which is 64 paints below the 350 mark to implement the Stage Ill as per the extant directives of the Hon’ble Supreme Court. Further, the forecast by IMD predicts very light rain/ drizzle and favourable wind conditions in the days to come.”

Following the revocation of Grap Stage-III, the ban on BS-4 diesel vehicles has been lifted across NCR. However, specific construction and demolition sites that were previously shut due to violations will remain closed.