As Mumbai continues to battle worsening air pollution, the Brihanmumbai Municipal Corporation (BMC) has rolled out GRAP-4 restrictions—the highest and most stringent level of pollution-control measures—in several pockets of the city where the Air Quality Index (AQI) has persistently remained in the ‘Poor’ to ‘Very Poor’ categories.

Localities now operating under GRAP-4 include Mazgaon, Deonar, Malad, Borivali East, Chakala–Andheri East, Navy Nagar, Powai, and Mulund, according to an NDTV report published on Monday. GRAP-4 is typically invoked only when air quality threatens to slip into emergency territory, and its enforcement signals growing concern over Mumbai’s atmospheric health.

Acting on real-time data that showed a steady rise in pollution levels, the BMC has ordered an immediate suspension of all construction and dust-intensive activities across affected zones. Over 50 construction sites have already received stop-work notices as part of a sweeping crackdown. Civic vigilance teams have intensified ground inspections, targeting hotspots known for dust dispersion and vehicular emissions.

Small industrial units—such as bakeries, marble-cutting workshops, fabrication units, and local manufacturing clusters—have also come under scrutiny. The BMC has directed these establishments to adopt cleaner fuel sources and low-emission systems, warning that failure to comply will attract penalties or closure. Hundreds of officials have been deployed citywide, authorised to issue instant fines for violations including visible dust, uncovered construction material, and garbage burning.

These restrictions will remain in force until a consistent, citywide improvement is observed in Mumbai’s air quality levels.

Earlier today, Mumbai’s overall AQI stood at 277, falling under the ‘Unhealthy’ category. Industrial belts like Wadala and BKC were among the worst-hit, recording severe readings that triggered health concerns among residents and office-goers.