SC asks Centre, Delhi to submit action plan on curbing air pollution
- The Supreme Court (Bench headed by CJI Surya Kant) directed the Delhi government and other authorities to submit implementation plans for long-term air pollution measures recommended by the Commission for Air Quality Management (CAQM) [S1][S2].
- Vehicular emissions flagged as the foremost pollution source in Delhi-NCR; measures include phasing out polluting vehicles, EV policy revision, and PUC (Pollution Under Control) regime reform [S1].
- Tests aspirants on environmental governance institutions, Centre-State/UT coordination, and judicial activism in environmental federalism — a recurring GS-II/GS-III theme.
- Directly linked to CAQM Act, 2021, one of the more frequently tested environmental-law bodies replacing the earlier EPCA.
2. Why in the News
- On Wednesday (21 January 2026), the SC directed Delhi and other authorities to submit action plans implementing CAQM's long-term recommendations [S1].
- Additional Solicitor General Aishwarya Bhati, appearing for CAQM, outlined measures: phasing out polluting vehicles, fortifying PUC regime, augmenting rail/metro transport, revised EV policy [S1].
- A meta-analysis of studies (2015–2025) cited before the Court attributed Delhi's PM2.5 to a mix of primary emissions and secondary particulate formation from sources within the NCR [S1].
- Court reportedly directed stakeholders to submit implementation plans within four weeks and indicated it would not entertain objections to CAQM's recommended measures [S2].
3. Background & Evolution
- CAQM established in 2021 under the Commission for Air Quality Management in National Capital Region and Adjoining Areas Act, 2021, replacing the earlier Environment Pollution (Prevention and Control) Authority (EPCA) [S3].
- CAQM issued a comprehensive policy to curb air pollution in NCR in July 2022, constituting an expert group with sector-wise action plans [S3].
- Operates the Graded Response Action Plan (GRAP), invoked in stages (I–IV) based on AQI deterioration; Stage-IV (the most stringent) has been invoked in past years during severe smog episodes [S3].
- 2024 recorded 209 days with AQI in the "Good–Moderate" category (below 200), cited by CAQM as evidence of improvement [S3].
- The current SC directive builds on a long line of judicial interventions on Delhi-NCR air quality dating back to EPCA-era orders and earlier SC monitoring of stubble burning, firecracker bans, and GRAP compliance.
4. Core Static Facts
| Item | Detail |
|---|---|
| Body | Commission for Air Quality Management (CAQM) in NCR and Adjoining Areas |
| Established | 2021, via CAQM Act, 2021 |
| Predecessor | EPCA (Environment Pollution Prevention and Control Authority) |
| Nodal Ministry | Ministry of Environment, Forest and Climate Change (MoEFCC) |
| Jurisdiction | Delhi + NCR districts of Haryana, UP, Rajasthan |
| Key mechanism | Graded Response Action Plan (GRAP), Stage I–IV |
| Bench in current case | Headed by CJI Surya Kant [S1] |
| Counsel for CAQM | Additional Solicitor General Aishwarya Bhati [S1] |
| Key recommended measures | Phase-out of polluting vehicles, PUC regime reform, EV policy revision, rail/metro augmentation, multi-modal transport hubs, RRTS last-mile connectivity, real-time passenger info systems, vehicle-scrapping incentives, EV charging infra expansion [S1] |
| Pollution source study cited | Meta-analysis of 2015–2025 studies on PM2.5 sources in Delhi [S1] |
5. Multi-Dimensional Analysis
Environmental - Vehicular emissions identified as the foremost pollution source, alongside secondary particulate formation (photochemical reactions of precursor gases) within NCR [S1]. - Long-term measures target structural transport-sector reform rather than seasonal firefighting (unlike stubble-burning bans, firecracker restrictions).
Legal/Constitutional - SC exercising continuing mandamus jurisdiction over environmental governance, a pattern from M.C. Mehta v. Union of India line of cases. - Court signaled it will not entertain objections to CAQM's recommendations, effectively making them binding directions — raises questions on separation of powers between judiciary and executive policy-making [S2].
Administrative/Governance - Highlights Centre-Delhi-NCR states coordination challenges; CAQM was created precisely to overcome inter-state/UT coordination failures of the EPCA era. - Concerns flagged that "long-term" goals remain continuous processes without time-bound targets, undermining accountability [S2].
Scientific/Technological - Reliance on meta-analysis of a decade of PM2.5 source-apportionment studies (2015–2025) to attribute pollution causes — reflects growing role of data-driven policy inputs in judicial proceedings [S1].
6. Recent Developments (last 12-18 months)
- 21 January 2026: SC directs Delhi govt and other authorities to submit implementation plans for CAQM's long-term recommendations; ASG Aishwarya Bhati presents measures on CAQM's behalf [S1].
- SC reportedly set a four-week deadline for stakeholders to submit implementation plans [S2].
- CJI instructed the Ministry of Environment/Power to present a proposal for relocating coal-based industries from Delhi-NCR, with alternative fuel source options [S2].
- Ongoing monitoring: Supreme Court Observer and Down To Earth report the Court continuing to review CAQM's "scientific roadmap," noting persistent implementation gaps [S2].
7. Prelims Hooks
- CAQM was constituted under the Commission for Air Quality Management in NCR and Adjoining Areas Act, 2021, replacing EPCA.
- CAQM's jurisdiction covers Delhi and adjoining NCR districts of Haryana, Uttar Pradesh, and Rajasthan.
- The Graded Response Action Plan (GRAP) has four stages, escalating with AQI deterioration; Stage IV is the most stringent.
- In the January 2026 SC hearing, the Bench was headed by CJI Surya Kant.
- Aishwarya Bhati, Additional Solicitor General, represented CAQM before the Court.
- CAQM's recommended long-term measures include phasing out polluting vehicles, PUC regime reform, and a revised EV policy.
- The pollution source analysis cited covered PM2.5 studies from 2015 to 2025.
- CAQM's nodal ministry is the Ministry of Environment, Forest and Climate Change (MoEFCC).
- 2024 recorded 209 days of "Good–Moderate" AQI (below 200) in Delhi, per CAQM data.
- CAQM's mechanism includes Regional Rapid Transit System (RRTS) integration for last-mile connectivity.
- Vehicular emission is identified as the single largest contributing source of Delhi-NCR air pollution per the case proceedings.
8. Mains Relevance
- GS-II: Governance — Centre-State relations, statutory bodies, judiciary's role in policy implementation (continuing mandamus).
- GS-III: Environment — pollution, conservation, environmental impact assessment.
- Possible question stems: 1. "Discuss the institutional evolution from EPCA to CAQM in tackling Delhi-NCR's air pollution. How effective has this transition been?" (GS-III) 2. "Critically examine the Supreme Court's role in enforcing environmental policy through continuing mandamus, with reference to recent directions on Delhi's air pollution." (GS-II) 3. "Vehicular emissions remain the largest contributor to Delhi's air pollution despite years of intervention. Suggest a comprehensive transport-sector reform strategy." (GS-III)
9. Related Topics to Study Next
- Graded Response Action Plan (GRAP) — the operational escalation mechanism CAQM enforces.
- EPCA vs CAQM — institutional comparison, a classic prelims trap.
- M.C. Mehta v. Union of India cases — foundational SC environmental jurisprudence and continuing mandamus.
- National Clean Air Programme (NCAP) — MoEFCC's broader pan-India air quality initiative.
- Stubble burning and crop residue management — seasonal contributor to NCR pollution, tied to Punjab/Haryana agri-policy.
- Electric Vehicle (EV) policy / FAME scheme — links to the EV-transition measures cited in this case.
- Bharat Stage (BS) emission norms — vehicular pollution control standard relevant to PUC regime discussion.
- Doctrine of Continuing Mandamus — judicial review concept underlying SC's sustained monitoring role.
10. Common Errors / Trap Areas
- Confusing CAQM with EPCA — CAQM is a statutory body (2021 Act), EPCA was a non-statutory authority it replaced.
- Assuming CAQM covers all of India — it is specific to NCR and adjoining areas, not a national body (that's NCAP's domain).
- Misattributing nodal ministry — CAQM functions under MoEFCC, not the Ministry of Urban Development or Ministry of Road Transport, despite its transport-heavy recommendations.
- Conflating GRAP stages with CAQM's long-term structural measures — GRAP is short-term/seasonal emergency response; the SC's January 2026 directive concerns long-term structural reform.
- Assuming the SC order applies only to Delhi — it addresses "Delhi and other authorities," implying NCR states too.
11. Sources
- [S1] SC asks Centre, Delhi to submit action plan on curbing air pollution — The Hindu — https://www.thehindu.com/todays-paper/2026-01-22/th_international/articleG7FFFK0PJ-13196474.ece — (tier: 4)
- [S2] SC orders Delhi-NCR to implement CAQM's long-term air pollution plan — Business Standard — https://www.business-standard.com/india-news/supreme-court-sc-delhi-ncr-caqm-air-pollution-air-quality-crisis-aqi-126012100960_1.html — (tier: 4)
- [S3] Commission for Air Quality Management — PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=1671452 — (tier: 1)