CAQM invokes Stage-I of GRAP across Delhi-NCR as AQI enters ‘Poor’ category

The Commission for Air Quality Management in the National Capital Region and Adjoining Areas (CAQM) invoked Stage-I of the Graded Response Action Plan (GRAP)...

What Happened

The Commission for Air Quality Management in the National Capital Region and Adjoining Areas (CAQM) invoked Stage-I of the Graded Response Action Plan (GRAP) across the entire NCR with immediate effect after Delhi's daily average Air Quality Index (AQI) rose to 208, entering the 'Poor' category.
IMD and IITM meteorological forecasts projected that AQI would remain in the 'Poor' or higher range in the coming days due to a combination of low wind speeds, high temperatures, and suspended particulate matter accumulation.
CAQM directed all urban local bodies and transportation authorities in Delhi, Gurugram, Noida, Ghaziabad, and Faridabad to implement all Stage-I precautionary measures immediately, including stricter enforcement of dust suppression norms and vehicular emission controls.
Stage-I restrictions under GRAP include measures targeting construction dust, road dust, biomass burning, and diesel generator use — aimed at arresting further deterioration before the AQI crosses into 'Very Poor' territory (above 300).
The invocation underscores that summer air quality in Delhi-NCR is no longer exclusively a winter phenomenon — high temperatures, dust storms, and reduced rainfall in pre-monsoon months are increasingly triggering GRAP even outside the October–February pollution season.

Static Topic Bridges

Graded Response Action Plan (GRAP)

GRAP is a set of emergency, graduated, and differentiated measures activated in Delhi-NCR when the AQI crosses defined thresholds. It was formulated under the directions of the Supreme Court of India in the case of M.C. Mehta v. Union of India (2016) and officially notified in 2017. It operates on the principle of anticipatory action — restrictions are invoked before the AQI reaches the projected level, not after, based on dynamic IMD/IITM forecasts.

Stage I — 'Poor': AQI 201–300; restrictions on construction dust, open burning, and high-emission vehicles
Stage II — 'Very Poor': AQI 301–400; additional brick kiln and hot mix plant closures
Stage III — 'Severe': AQI 401–450; BS-III petrol and BS-IV diesel vehicles banned in Delhi
Stage IV — 'Severe+': AQI >450; entry of trucks into Delhi banned; possible closure of schools
Implemented by CAQM Sub-Committee on GRAP in coordination with state governments of Delhi, Haryana, UP, Rajasthan, and Punjab

Connection to this news: CAQM invoked Stage-I as a preventive measure when AQI reached 208, consistent with the anticipatory activation protocol. The trigger in summer 2026 highlights GRAP's evolving relevance beyond the traditional winter smog season.

Commission for Air Quality Management in NCR and Adjoining Areas (CAQM)

CAQM is a statutory body established under the Commission for Air Quality Management in the National Capital Region and Adjoining Areas Act, 2021. It replaced the Environment Pollution (Prevention and Control) Authority (EPCA), which was a Supreme Court-appointed body. CAQM is directly accountable to Parliament and has overriding powers over state pollution control boards in NCR-related air quality matters.

Constituted under: CAQM Act, 2021 (replaced EPCA, originally constituted under the Environment (Protection) Act, 1986)
Jurisdiction: Delhi, Haryana, Punjab, Rajasthan, Uttar Pradesh (NCR and adjoining areas)
Powers: Can issue directions, impose penalties up to ₹1 crore and/or 5 years imprisonment for non-compliance
Chairperson: A serving or retired IAS officer of the rank of Secretary to Government of India
Accountability: Reports to Parliament; decisions override state-level pollution control boards in its jurisdiction

Connection to this news: CAQM's invocation of GRAP Stage-I is a statutory exercise of power under the CAQM Act, 2021 — not merely an advisory. Non-compliance by state agencies attracts legal penalties, making it qualitatively different from earlier EPCA advisories.

Air Quality Index (AQI) Framework

India's National Air Quality Index (NAQI) was launched in 2014 by the Central Pollution Control Board (CPCB) under the Ministry of Environment, Forest and Climate Change. It aggregates pollutant concentrations (PM2.5, PM10, NO₂, SO₂, CO, O₃, NH₃, and Pb) into a single number using a sub-index and breakpoint concentration approach. AQI values reflect the 24-hour daily average measured at official CAAQMS stations.

AQI Categories: Good (0–50), Satisfactory (51–100), Moderate (101–200), Poor (201–300), Very Poor (301–400), Severe (401–500)
Primary pollutants in Delhi: PM2.5 and PM10 (responsible for the health burden from air pollution)
Monitoring: Continuous Ambient Air Quality Monitoring Stations (CAAQMS) operated by state pollution boards and CPCB
Health threshold: PM2.5 National Ambient Air Quality Standard (NAAQS) = 60 µg/m³ (24-hour average); WHO guideline = 15 µg/m³

Connection to this news: Delhi's AQI of 208 (Poor category) is driven principally by elevated PM2.5 and PM10 from road dust, vehicular emissions, and industrial activity — the same sources targeted by Stage-I GRAP restrictions.

Environment (Protection) Act, 1986 and Air Pollution Regulation

India's air pollution regulatory framework rests on two statutes: the Air (Prevention and Control of Pollution) Act, 1981, which established State Pollution Control Boards (SPCBs) and set ambient air quality standards; and the Environment (Protection) Act, 1986 (EPA), which gave the Central Government overriding powers to take measures to protect and improve environmental quality. EPCA was originally constituted under the EPA, and CAQM's Act of 2021 expanded these powers with a dedicated statutory body.

Air (Prevention and Control of Pollution) Act, 1981: provides for consent mechanism for industries; establishes SPCBs
Environment (Protection) Act, 1986: overarching central authority; enables delegation to bodies like CPCB, CAQM
National Ambient Air Quality Standards (NAAQS) last revised: 2009 (by MoEFCC notification)
Article 48A of the Constitution (DPSP): directs the State to protect and improve the environment
Article 21 jurisprudence: the Supreme Court has held that the right to a clean environment is part of the right to life

Connection to this news: GRAP's legal authority ultimately rests on a chain from Article 21 → EPA 1986 → CAQM Act 2021 → GRAP invocation orders — each step giving CAQM broader and faster enforcement powers than its predecessor EPCA.

Key Facts & Data

Delhi AQI on trigger date: 208 (Poor category; range 201–300)
GRAP Stage-I AQI threshold: 201–300 (Poor category)
CAQM constituted under: CAQM Act, 2021
GRAP origin: Supreme Court order in M.C. Mehta v. Union of India (2016); notified 2017
India's NAAQS PM2.5 standard: 60 µg/m³ (24-hour average)
WHO PM2.5 guideline: 15 µg/m³ (24-hour average)
CAQM jurisdiction: Delhi-NCR + Punjab, Haryana, Rajasthan, Uttar Pradesh adjoining areas
Penalties under CAQM Act for non-compliance: up to ₹1 crore fine and/or 5 years imprisonment
AQI India launched: 2014 by Central Pollution Control Board (CPCB)