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Delhi air turns ‘poor’, time for GRAP-1

  • Category
    Ecology and Environment
  • Published
    14th Oct, 2023

Context:

Stage one of the revised Graded Response Action Plan (GRAP) is likely to be activated in Delhi due to increasing pollution levels.

What is GRAP?

  • GRAP is a comprehensive strategy designed to combat air pollution in cities across India. It consists of four stages, each tailored to address specific air quality concerns.
  • It is an emergency response mechanism based on AQI level of Delhi and brings together multiple stakeholders, implementing agencies and authorities to respond to situations of deteriorating air quality in Delhi-NCR.
  • Implementing Agency: Committee for Air Quality Management (statutory body)

Stage

Quality

AQI

Measure

Stage I

‘Poor’ Air Quality

DELHI AQI ranging between 201-300

Initial measures to address deteriorating air quality.

Stage II

‘Very Poor’ Air Quality

DELHI AQI ranging between 301-400

Focused actions and intensified remedial measures in identified hotspots.

Stage III

‘Severe’ Air Quality

DELHI AQI ranging between 401-450

Stricter restrictions on "plying of BS III petrol and BS IV diesel LMVs (4 wheelers) in Delhi and in the districts of Gurugram, Faridabad, Ghaziabad and Gautam Buddh Nagar."

Stage IV

‘Severe +’ Air Quality

DELHI AQI > 450

The most stringent measures to tackle the worst air quality conditions. "Do not permit Light commercial vehicle (LCVs) registered outside Delhi, other than EVs / CNG / BS-VI diesel, to enter Delhi, except those carrying essential commodities / providing essential services," as per Stage 4 restrictions. 

  • A reading between zero and 50 on the AQI is considered ‘good’, 51 and 100 ‘satisfactory’, 101 and 200 ‘moderate’, 201 and 300 ‘poor’, 301 and 400 ‘very poor’, and 401 and 500 ‘severe’.
  • Revision: GRAP was revised in July 2023 with the aim of bolstering measures against deteriorating air quality as a result of rising stubble burning during the winter months. 

Verifying, please be patient.

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