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GRAP = Graded Response Action Plan
GRAP is a plan to combat air pollution in the National Capital Region (NCR) of India. The plan has four stages, each with specific actions for authorities and agencies to take:
- Stage I:-Poor air quality, with an Air Quality Index (AQI) of 201–300
- Stage II:- Very poor air quality, with an AQI of 301–400
- Stage III:- Severe air quality, with an AQI of 401–450
- Stage IV:- Severe plus air quality, with an AQI greater than 450
