The air quality index in several cities has been reported, with Bhubaneswar and Bengaluru having a real-time air quality index of 53. Other cities have been reported to have varying air quality indexes, ranging from 40 in Nagpur to 125 in Ambala. The air quality indexes in other cities, such as Chennai, Chandigarh, and Lucknow, fall within this range, with indexes of 88, 97, and 108, respectively.