The Commission for Air Quality Management (CAQM) today revoked Stage 4 of the Graded Response Action Plan (GRAP) across Delhi and the National Capital Region (NCR). Nonetheless, measures under stages 1, 2, and 3 will remain in force to manage pollution levels. The GRAP 4 measures have been in effect in the entire NCR since December 16 after deterioration in air quality.
This move follows after the Central Pollution Control Board (CPCB) reported an Air Quality Index (AQI) of 401 at 8 AM. The AQI on Monday fell into the severe category, measuring 403 at 7 am. Reportedly, AQI in several areas of the national capital was also recorded as ‘severe.’
Reports said, Anand Vihar recorded an AQI at 439, 456 at Ashok Vihar, 473 at Bawana, 406 at CRRI Mathura Road and 430 at Narela. Notably, an AQI between 0-50 is considered good, 51-100 is satisfactory, 101-200 is moderate, 201-300 is poor, 301-400 is very poor, and 401-500 is severe.
The GRAP 4 measures were implemented in Delhi after the air quality index (AQI) hit alarming levels on 16th December 2024. The Air Quality Index breached the 350 mark during the day, prompting the GRAP Sub-Committee to implement Stage-III measures. On the same day, by 10 PM, the AQI soared to 401, surpassing the severe plus category threshold. According to the Supreme Court instructions, Stage-IV measures were immediately introduced to tackle the crisis.
The apex court had earlier mandated precautionary measures, requiring Stage-III actions for AQI above 350 and Stage-IV for AQI exceeding 400. These directions were reiterated on 5th, 12th, and 19th December 2024, underlining the urgency to address Delhi’s air pollution.
As Delhi continues to battle hazardous air quality, the intensified measures under GRAP Stages I, II, and III will focus on curbing pollution sources and improving monitoring. Furthermore, residents are urged to remain cautious and adhere to guidelines issued by the authorities to mitigate the impact of air pollution on health and daily life.