Jahangirpuri records an AQI of 417, the highest in the capital; Noida also crosses 300 as new winter pollution curbs take effect. Delhi’s air pollution intensified on Monday, with the city’s Air Quality Index (AQI) rising to 307 at 7 am, pushing it into the ‘very poor’ category, according to the Central Pollution Control Board’s (CPCB’s) real-time data. The deterioration was widespread across the capital.