Delhi-NCR authorities impose GRAP Stage 1 as Delhi’s Air Quality Index (AQI) rises from the “moderate” range to “poor.” Multiple reports cite the Commission for Air Quality Management (CAQM) as the trigger point, with AQI moving around 179 on 20 October to about 244 by 2pm on 21 October, placing it within the GRAP-1 band.
GRAP-1 is described as applying when AQI is between 201 and 300. Coverage explains that the restrictions focus on pollution controls, with at least one outlet specifying measures such as prohibiting coal and firewood for cooking and limiting diesel generator use. Several reports also note that the poor air-quality conditions are expected to continue, prompting the curbs across the NCR region.
While most outlets align on the AQI deterioration and the imposition of GRAP Stage 1, they differ in the exact AQI time stamp and figure cited (e.g., 244 at 2pm versus 238 at 10am in one report). Some outlets mainly restate the CAQM decision, while others add details about what restrictions take effect.
