About Graded Response Action Plan (GRAP)

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About Graded Response Action Plan (GRAP) Blog Image


Recently, the Commission for Air Quality Management in NCR & Adjoining Areas (CAQM) announced revision of the Graded Response Action Plan (GRAP) which will come into force w.e.f. 1st October, 2023 in the entire National Capital Region.

About Graded Response Action Plan: 


  • It is a set of emergency measures that kick in to prevent further deterioration of air quality once it reaches a certain threshold in the Delhi-NCR region.
  • The GRAP was first notified in January 2017 by the Ministry of Environment, Forest and Climate Change.
  • Implementation:
    • The Commission for Air Quality Management (CAQM) has constituted a sub-committee for the operationalization of the GRAP.
    • This body includes officials from the CAQM, member secretaries of pollution control boards of Uttar Pradesh, Delhi, Haryana, Rajasthan, the Central Pollution Control Board, a scientist from the IMD and one from the IITM and Health Advisor.
    • The sub-committee is required to meet frequently to issue orders to invoke the GRAP.
    • The orders and directions of the CAQM will prevail in case of any conflict between directions issued by the State governments and the CAQM.


What are the revised measures?

  • Stage I – ‘Poor’ Air Quality (AQI ranging between 201-300): Enforce NGT / Hon’ble SC’s order on over aged diesel / petrol vehicles.
  • Stage II - 'Very Poor' (AQI 301-400): Rigorous actions to combat air pollution at identified hotspots in the region.
  • Stage III - 'Severe' (AQI 401-450): Impose strict restrictions on BS III petrol and BS IV diesel four-wheelers in certain areas and may suspend physical classes in schools for primary grade children up to Class 5.
  • Stage IV - 'Severe Plus' (AQI greater than 450) : When the AQI exceeds 450, four-wheelers registered outside Delhi, except for electric vehicles, CNG vehicles, and BS-VI diesel vehicles, will not be allowed to enter the city.


Q1) What is the Air Quality Index?

 It is a numerical scale used to communicate the quality of the air in a specific location at a given time. The AQI is typically calculated based on the concentrations of several major air pollutants that can affect human health and the environment.

Source: CAQM announces revision of the Graded Response Action Plan (GRAP) to further strengthen measures to combat sudden/ anticipated deterioration of air quality in NCR during winter months