Why in News?
Ahead of the annual winter smog crisis, the Delhi Government, in coordination with the Union Environment Ministry and the Commission for Air Quality Management (CAQM), has introduced a permanent Proactive Winter Air Quality Management Framework (Winter Action Plan 2026-27).
The framework marks a paradigm shift from the reactive approach of the Graded Response Action Plan (GRAP) to a proactive and preventive model, featuring:
- Year-round institutional measures
- Advanced seasonal action
- Airshed-based management — treating Delhi-NCR as a single air-pollution region, recognising that pollutants move across administrative boundaries
These measures will operate alongside GRAP, which continues to impose graded restrictions based on prevailing AQI levels during severe pollution episodes.
Key Highlights of Winter Action Plan 2026-27
1. Vehicular Emission Control
- Entry Restrictions: Non-Delhi-registered commercial and private vehicles failing to meet BS-VI emission standards are barred from entering the capital during winter months. Exemptions: CNG vehicles, EVs, and emergency services.
- 'No PUCC, No Fuel' Mandate: Petrol pumps integrated with Automatic Number Plate Recognition (ANPR) camera systems will deny fuel to end-of-life vehicles or those without a valid Pollution Under Control Certificate (PUCC).
- Demand Management: Doubled municipal parking fees across authorised public sites (except metros) to discourage private motorised trips and promote mass transit.
2. Workplace & Mobility Arrangements
- 50% Work-From-Home (WFH): Government and private offices to ensure not more than 50% physical attendance during the winter pollution period.
- Staggered Working Hours: Decentralised reporting times between municipal corporations and government offices to flatten peak-hour traffic and reduce idling emissions.
3. Fugitive Dust & Construction Regulations
- Phased Construction Bans: Restrictions on dust-generating construction activities, with a stricter construction and demolition (C&D) ban during peak winter pollution.
- Mechanical Road Sweeping: Scaled deployment of mechanised sweeping machines and water sprinklers with chemical dust suppressants along high-density traffic corridors.
4. Industrial Monitoring & Technology
- AI-enabled Command and Control Centre: Operational from 1st October 2026, supported by 334 enforcement teams working in shifts to monitor industrial emissions and open-burning violations.
- Monitoring Network Expansion: Continuous air quality monitoring stations to be expanded from 47 to 60 for finer mapping of pollution sources.
- Public Reporting: Citizens can report violations via the Green Delhi App and submit feedback through a new citizen suggestions portal.
Graded Response Action Plan (GRAP)
- Definition: A dynamic, pre-emptive emergency framework to control deteriorating air pollution in the Delhi-NCR.
- Origin & Legal Backing: Formulated under Supreme Court directives in M.C. Mehta v. Union of India (2016); officially notified in 2017.
- Implementing Authority: CAQM, in coordination with MoEFCC and respective state authorities.
- Objective: A graded, time-bound response based on the Air Quality Index (AQI) to prevent hazardous toxicity levels.
Stages of GRAP
| Stage | AQI Range | Key Measures |
|---|---|---|
| Stage I (Poor) | 201–300 | Intense road dust management; strict PUC norm enforcement |
| Stage II (Very Poor) | 301–400 | Restrictions on diesel generator (DG) sets; targeting pollution hotspots |
| Stage III (Severe) | 401–450 | Ban on BS-III petrol and BS-IV diesel vehicles; halt on C&D activities; remote schooling option |
| Stage IV (Severe+) | >450 | Ban on entry of heavy vehicles/trucks; closure of physical schools; shutdown of non-essential industries |
Significance
- Preventive Governance: Moves beyond crisis-response to anticipatory governance, potentially reducing health burdens before AQI spikes.
- Regional Coordination: Airshed-based approach acknowledges that pollution does not respect administrative boundaries, necessitating NCR-wide action.
- Technology-Driven Enforcement: AI monitoring, ANPR, and expanded sensor networks strengthen evidence-based regulation.
- Citizen Participation: Digital reporting tools (Green Delhi App) promote cooperative federalism and public accountability.
- Health Protection: Measures like WFH and staggered hours reduce exposure during the most hazardous months.
UPSC Previous Year Questions (PYQs)
Prelims 2016: In cities of India, which atmospheric gases are normally considered in calculating the Air Quality Index?
- Answer: (b) 2, 3 and 4 only — Carbon monoxide, Nitrogen dioxide, Sulphur dioxide (CO₂ and methane are not AQI parameters).
Prelims 2024: According to the EPA, the largest source of sulphur dioxide emissions is:
- Answer: (d) Power plants using fossil fuels.