Stringent anti-pollution measure GRAP-4 has been revoked in Delhi after a slight improvement in the air quality. The air quality index or AQI of Delhi has been “continuously improving” since morning, said the sub-committee. At 4 PM, the AQI was “very poor” at 369, which is 31 points below the limits decided by the Supreme Court for invoking stage-4.
The GRAP-4 restrictions were reimposed in the national capital and its adjoining areas last week (December 16).