Question raised in Lok Sabha on National Air Quality Index, 15/03/2016, Central Pollution Control Board (CPCB) started disseminating the Air Quality Index (AQI) for 10 cities based on the data CAAQM stations. At present, 23 cities are connected to the web-based system of National AQI. They are Agra, Ahmadabad, Bangaluru, Chandrapur, Chennai, Delhi, Faridabad, Gaya, Gurgaon, Haldia, Hyderabad, Jaipur, Jodhpur, Kanpur, Lucknow, Mumbai, Muzaffarpur, Navi Mumbai, Panchkula, Patna, Pune, Solapur and Varanasi.