Mumbai's air quality monitors reported varying AQI levels, with some readings appearing unusually low at construction sites. The discrepancies in data raise questions about the calibration. With air quality worsening, construction and redevelopment projects are again under closer scrutiny from the Brihanmumbai Municipal Corporation. Brihanmumbai Municipal Corporation (BMC)'s Additional Commissioner Avinash Dhakne said in a press conference here that air quality is categorised as "good" and "satisfactory" when the average.