Overview
- Official data showed Delhi’s 24-hour average AQI climbed to 307 on Sunday, with hotspots such as Anand Vihar, Chandni Chowk and Ashok Vihar exceeding 300.
- Citywide air improved marginally on Monday, with morning readings near 256–266 and a later 24-hour average of 244, though multiple stations still registered very poor levels.
- Dense morning fog reduced visibility and disrupted operations at IGI Airport, with reports of multiple delays and cancellations across airlines.
- The Air Quality Early Warning System indicated a brief moderation to moderate on Tuesday before a return to poor to very poor, as the IMD maintained cold-wave and fog alerts for North India.
- Stage-3 GRAP curbs remain revoked while Stages 1–2 continue, and IITM’s DSS identified transport (~13–14%) and industry (~11%) as leading PM2.5 sources with notable external contributions from Jhajjar and Sonipat.