Delhi’s air quality deteriorated significantly after Diwali, with the Air Quality Index (AQI) exceeding 400 in several areas, categorizing it as ‘severe.’ Notable readings included Anand Vihar at 433, Ashok Vihar at 410, Rohini at 411, and Vivek Vihar at 426, according to the Central Pollution Control Board (CPCB). The alarming levels raise concerns about health impacts in the capital.