Pollution Control Board  

Further, the Pollution Control Board will keep a tab on the extent of air pollution for 14 days ― seven days before the festival and seven days thereafter

The air quality in the area is expected to reach its worst because of toxic fumes from stubble burning in parts of Punjab and Haryana that are expected to gush into Delhi, coupled with Diwali and other seasonal factors.

Union minister Harshvardhan said that the Central Pollution Control Board (CPCB) has constituted a 41-member team, which will continuously monitor the air pollution levels and report to the board

According to the authorities, the change in direction of wind has brought about the change. The wind, currently, is flowing from stubble-burning areas in Punjab and Haryana

Delhi-NCR areas like Ghaziabad and Gurgaon recorded 'very poor' air quality at 302 and 336 respectively, Central Pollution Control Board (CPCB) data said. Yesterday, the AQI of Delhi was registered at 259.