The construction dust factor contributes to about 35 per cent to bad air quality in the city, according to a study by the Indian Institute of Technology, said Municipal Commissioner Bhushan Gagrani on Wednesday. 

Speaking to the media after the release of Brihanmumbai Municipal Corporation's (BMC) budget for the financial year 2026-27, Gagrani said, "BMC is expected to control the entire AQI. However, our rules, regulations, add systems are designed to control construction dust that contributes to pollution in the city."