In a stark escalation of the capital’s annual battle against toxic air, the Commission for Air Quality Management (CAQM) has activated Stage 3 of the Graded Response Action Plan (GRAP) across Delhi-NCR effective immediately, as the Air Quality Index (AQI) plummeted to hazardous levels above 400 in multiple hotspots. This severe measure, triggered by the AQI breaching the “severe” threshold of 401 at Anand Vihar and ITO monitoring stations by 10:00 AM today, imposes stringent curbs on construction, industrial operations, and vehicular movement