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The BMC has deployed ward-level flying squads to enforce pollution-control measures across Mumbai, with a focus on construction sites. During December 2025, 557 sites received showcause notices, while 233 faced stop-work orders for non-compliance. Winter conditions and low winds worsen air quality, with industrial emissions, road dust, construction, and vehicle smoke as primary contributors. Citizens are urged to follow official CPCB and MPCB data, as private platforms often rely on unverified sources. Revised 2024 guidelines mandate stricter control measures, including netting, water sprinkling, and air monitoring systems.
With winter bringing higher pollution levels, the BMC has activated ward-level flying squads to enforce pollution-control norms more strictly across the city, focusing particularly on construction sites. Between December 1 and 31, 2025, the civic body issued showcause notices to 557 construction sites and served stop-work notices at 233 locations for failing to comply with dust-control regulations. Officials said the enforcement drive is ongoing. Advertisement
On Monday, the city's air quality index (AQI) was recorded at 126, placing it in the moderate category. The BMC noted that discrepancies in third-party readings have caused confusion and asked citizens to rely only on official data from the Central Pollution Control Board (CPCB) website or the CPCB- and Maharashtra Pollution Control Board (MPCB)-approved Sameer app. The civic body highlighted that many private platforms use unverified sensors or satellite-based estimates that do not meet national calibration standards.
Data from the Sameer app showed Mumbai's air quality in the satisfactory category on January 1 and 2, before shifting to the moderate range on January 3 and 4. The BMC urged residents to consider CPCB data as the most reliable measure of air quality.
The environment and climate change department of the BMC explained that lower winter temperatures and weak winds from October to February reduce the dispersion of pollutants. Industrial emissions, construction and road dust, vehicular smoke, and garbage burning are the main contributors to declining air quality.
To address these issues, the BMC issued revised guidelines in 2024 with 28 specific measures. These include sheet-metal barricading and green netting at construction sites, regular water sprinkling, scientific handling and transport of debris, installation of air pollution monitoring systems, and smoke extraction mechanisms. The civic body has emphasized that adherence to these measures is critical to controlling air pollution in the city.
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