Pimpri-Chinchwad recorded the second-highest air pollution level in Maharashtra on Sunday, with an overall air quality index (AQI) of 197 at 9 pm; trailing only Nagpur, which recorded an AQI of. The air quality in Pimpri-Chinchwad's Bhosari has slipped into the hazardous category over the last 24 to 48 hours, with the Air Quality Index (AQI) recorded between 421 and 427 on Saturday and.