Air quality index: KSPCB data shows Mysuru recorded a spike in pollution levels during Deepavali compared to last year due to increased bursting of crackers. Mysuru: The pollution level has increased due to an increase in the amount of crackers bursted this year compared to previous years and normal day, as per the reports of ambient air quality index assessed by Karnataka State Pollution Control Board (KSPCB) at three different locations in.