Overview
- Delhi’s 24-hour AQI hit about 440 on Sunday and hovered near 418 on Monday morning, with hotspots such as Anand Vihar peaking around 497 on the CPCB scale.
- Stage‑IV curbs under the Graded Response Action Plan are in force across NCR, halting most construction and demolition, restricting entry of polluting trucks, and shifting lower classes to hybrid learning.
- Dense fog cut visibility across the capital and contributed to major travel disruptions, with more than 500 flight delays reported at Delhi airport.
- Attribution data from IITM’s Decision Support System identified transport as the top contributor to PM2.5 (~10.6%), followed by industry (~7.7%), with notable external inputs from Baghpat and Ghaziabad.
- Experts flagged stagnant winds and moisture as key drivers of the spike, as the Supreme Court’s earlier order presses CAQM to publish a source‑apportionment exercise within two weeks.