The overall Air Quality Index (AQI) in Delhi hovered around 430 at 7 am, placing the air quality of the national capital in the 'severe' category. While Wazirpur registered an AQI above 450, Bawana reached 435 on Sunday morning. Meanwhile, Jahangirpuri registered an AQI of 438, followed by Anand Vihar at 427 and Ashok Vihar at 421.