Economy Delhi's air quality very poor, authorities forecast further dip; CPCB sends notices to agencies Updated : December 17, 2018 09:41 PM IST The Central Pollution Control Board directed the agencies to submit weekly report on the action taken and also address complaints received through social media in minimum possible time. The overall air quality index (AQI) of the national capital was 336, which falls in the 'very poor' category, according to CPCB data. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.