Overview
- IMD maintained dense-fog alerts across Delhi-NCR after visibility dropped to near 50 metres in earlier hours, with conditions lingering into Wednesday morning.
- By late Wednesday morning, at least 148 flights were cancelled and over 150 delayed at Delhi airport, with operations slowed under CAT III protocols and some diversions reported.
- Delhi’s overall AQI hovered in the very poor range (around 372–388) as multiple stations crossed 400, and official outlooks indicate a likely return to the severe band around December 31–January 1.
- Rail travel was hit as Northern Railways reported more than 50 delayed trains in the Delhi division due to low visibility.
- Airlines issued passenger advisories and the aviation ministry reiterated facilitation norms, while DSS-AQM modeling identified transport as the largest pollution contributor near 15%.