Graded Response Action Plan (GRAP)
GRAP is a set of emergency, graduated, and differentiated measures activated in Delhi-NCR when the AQI crosses defined thresholds. It was formulated under the directions of the Supreme Court of India in the case of M.C. Mehta v. Union of India (2016) and officially notified in 2017. It operates on the principle of anticipatory action — restrictions are invoked before the AQI reaches the projected level, not after, based on dynamic IMD/IITM forecasts.
- Stage I — 'Poor': AQI 201–300; restrictions on construction dust, open burning, and high-emission vehicles
- Stage II — 'Very Poor': AQI 301–400; additional brick kiln and hot mix plant closures
- Stage III — 'Severe': AQI 401–450; BS-III petrol and BS-IV diesel vehicles banned in Delhi
- Stage IV — 'Severe+': AQI >450; entry of trucks into Delhi banned; possible closure of schools
- Implemented by CAQM Sub-Committee on GRAP in coordination with state governments of Delhi, Haryana, UP, Rajasthan, and Punjab
● Tracked since May 19, 2026 · last seen August 24, 2026 · updates as the daily brief publishes
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