5 months ago
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In presumption of the crisp dip successful aerial prime successful Delhi connected Saturday (December 13, 2025) evening, the the Commission for Air Quality Management successful NCR and Adjoining Areas (CAQM) imposed signifier 4 of Graded Response Action Plan (GRAP), a acceptable of exigency measures to power aerial pollution.
This comes arsenic the Air Quality Index (AQI) stood astatine 441 arsenic of 6 p.m. connected Saturday (December 13), a time aft the CAQM implemented curbs nether signifier 3 of the anti-pollution measures. The deterioration successful aerial prime has been attributed to dilatory upwind speed, unfavourable upwind parameters and meteorological conditions.
“Keeping successful presumption the prevailing inclination of aerial prime and successful an effort to forestall further deterioration of aerial prime successful the region, the CAQM Sub-Committee connected GRAP decides to invoke each actions arsenic envisaged nether Stage-IV of the extant GRAP – ‘Severe+’ Air Quality (DELHI AQI > 450), with contiguous effect, successful the full NCR,”the CAQM said successful a connection
GRAP-IV curbs travel into effect successful summation to the actions nether Stages I, II & III of extant GRAP already successful unit crossed NCR, the CAQM added.
GRAP-IV successful Delhi-NCR: What is allowed and what is banned arsenic AQI rises to ‘severe plus’
Stage 4 curbs see a prohibition connected each operation activities, introduction of non-essential polluting trucks into Delhi, and mandatory shifting of schoolhouse classes, but for classes 10 and 12, to hybrid mode.
Non-essential diesel trucks are prohibited from entering Delhi, portion Delhi-registered BS-IV and older diesel-run dense goods vehicles are banned, but for indispensable services nether Stage 4.
On Saturday (December 13, 2025) morning, the aerial prime was connected the brink of the ‘severe’ class with an AQI of 397.
According to CPCB, an AQI betwixt 0 and 50 is classified “good”, 51 to 100 “satisfactory”, 101 to 200 “moderate”, 201 to 300 “poor”, 301 to 400 “very poor” and 401 to 500 “severe”.
