Overview

• Delhi’s average AQI improved to 167 on Sunday from 199 on Saturday due to 10–15 km/h winds, after a sharp midweek spike.
• The Early Warning System projects moderate air on October 13–14 and poor conditions from October 15, likely persisting for about six days.
• Source apportionment estimated transport as the largest current contributor at roughly 19.8%, while stubble burning contributed about 0.8% on Sunday with limited fire counts detected in Punjab, Haryana and UP-NCR.
• Delhi officials said winter readiness measures are active, citing road cleaning, water sprinkling, enforcement at pollution sources and a tally of 199 sub‑200 AQI days so far this year.
• Mumbai’s overall AQI remained in the moderate band around 135–153 after monsoon withdrawal, with hotspots such as Deonar up to 253 and Kalamboli at 201, as the BMC prepares deep cleaning, misting and enforcement including notices to coal‑ or wood‑fired bakeries and deployment of 29 multipurpose cleaning machines.