Overview
- Mumbai’s citywide air quality deteriorated into the unhealthy band, with overall AQI reported around 263–292 through Friday and Saturday as a thin haze persisted despite clear skies.
- Several neighbourhoods entered the severe zone, led by Wadala Truck Terminal at 382, with Chembur and Colaba at 312, Worli at 308, and Mazgaon at 305, while some suburban pockets remained poor to unhealthy.
- IMD logged unusually cool minimums and microclimate contrasts — roughly 17.4°C at Santacruz versus about 22–23°C at Colaba — and forecast continued clear, dry conditions with daytime highs near 33–34°C.
- Municipal authorities moved to tighten controls under GRAP IV and stepped up enforcement at construction sites as pollution persisted above thresholds in multiple areas.
- Regional readings showed Delhi faring worse, with CPCB data in the very poor to severe range (overall around 360–370 and several stations above 400), while Mumbai also saw high particulate loads, including reported PM2.5 near 134 µg/m³ on Sunday morning.