On 21 July 2026, the Commission for Air Quality Management (CAQM) reported a fresh round of enforcement actions across the National Capital Region (NCR) — dozens of inspections and compliance orders to curb air pollution. For a CDS/OTA aspirant, air quality is one of the most reliably examined environment topics, and the CAQM — with its tools like the Graded Response Action Plan (GRAP) and the Air Quality Index (AQI) — is exactly the institutional-and-conceptual cluster the exam tests.
The news in one frame
The essentials:
- What: the CAQM reviewed enforcement across the NCR (inspections and compliance orders).
- Who: the Commission for Air Quality Management — the statutory body for NCR air quality.
- Tools: the Graded Response Action Plan (GRAP) and the Air Quality Index (AQI).
- Why it matters: Delhi-NCR suffers severe winter air pollution, worsened by stubble burning.
What is the CAQM?
Start with the institution. The Commission for Air Quality Management in NCR and Adjoining Areas (CAQM) is a statutory body created under the CAQM Act, 2021. Key facts:
- It replaced the earlier EPCA (Environment Pollution Prevention & Control Authority), giving air-quality governance a stronger legal footing.
- Its jurisdiction covers Delhi and the NCR parts of Haryana, Punjab, Rajasthan and Uttar Pradesh — a region-wide mandate that a single state couldn't provide.
- It can coordinate, plan and enforce measures across states, issue directions, and impose penalties — overriding overlapping authorities on air-quality matters.
The point of a regional body is that air pollution crosses state borders — smoke from farm fires in Punjab affects Delhi — so a coordinated authority is essential. This governance-and-environment area is exactly what the CDS/OTA notes on the economy and environment touch.
The Graded Response Action Plan (GRAP)
The examinable tool is GRAP — a stage-wise emergency plan that tightens restrictions as air worsens, based on the AQI:
- Stage I (Poor, AQI 201–300) — dust control, ban on garbage burning.
- Stage II (Very Poor, AQI 301–400) — more restrictions, diesel-genset limits, parking fees.
- Stage III (Severe, AQI 401–450) — bans on construction and certain vehicles.
- Stage IV (Severe+, AQI >450) — trucks restricted, schools/offices may shift to hybrid mode.
GRAP is pre-emptive — actions kick in before pollution peaks. These themes recur in the CDS/OTA daily current affairs.
The Air Quality Index (AQI)
Understand the measurement:
- The AQI converts complex pollution data into a single number and colour code — from Good (0–50) through Satisfactory, Moderate, Poor, Very Poor to Severe (401–500).
- It tracks eight pollutants, chiefly PM2.5 and PM10 (particulate matter), plus ozone, NO₂, SO₂, CO, ammonia and lead.
- PM2.5 (fine particles ≤2.5 microns) is the most dangerous — it lodges deep in the lungs and bloodstream.
- India's AQI was launched under the national "Ek Number" / SAFAR initiative and is monitored by the Central Pollution Control Board (CPCB).
The revision hook: CAQM = statutory body (Act 2021) for NCR air quality (Delhi + parts of Haryana/Punjab/Rajasthan/UP), replaced EPCA; uses GRAP (stage-wise, AQI-based) and the AQI (8 pollutants, PM2.5/PM10 key); CPCB monitors; stubble burning is a major winter source.
Sources of air pollution — and solutions
Round out with the causes and responses:
- Major sources: vehicle emissions, industry, construction dust, waste burning, and seasonally, stubble (parali) burning in Punjab/Haryana, plus firecrackers and temperature inversion in winter that traps pollutants.
- Legal backbone: the Air (Prevention and Control of Pollution) Act, 1981 and the Environment (Protection) Act, 1986.
- Programmes: the National Clean Air Programme (NCAP) targets cutting particulate pollution in cities; push for CNG/EVs, cleaner fuels (BS-VI), and crop-residue management (e.g., bio-decomposers, Happy Seeder).
- Bodies: CPCB (central) and State Pollution Control Boards enforce standards.
The wider environmental-governance web
A little more depth the exam rewards — the CAQM sits among several bodies:
- CPCB (Central Pollution Control Board) and State PCBs — set standards and monitor air/water pollution under the Air Act 1981 and Water Act 1974.
- National Green Tribunal (NGT, 2010) — a specialised court for environmental disputes, which can order pollution action.
- Ministry of Environment, Forest & Climate Change (MoEF&CC) — the nodal ministry.
- SAFAR / CPCB monitoring stations — real-time air data feeding the AQI.
A useful distinction: the CAQM plans and coordinates, the CPCB monitors and standard-sets, and the NGT adjudicates — three different roles the exam likes to separate. Air pollution also connects to climate (black carbon, a short-lived climate pollutant) and to health (WHO ranks it among the top mortality risks), which makes it a strong cross-cutting essay theme.
Why it matters
For the essay/interview and bigger picture:
- Public health: air pollution causes respiratory and heart disease and shortens lives — a major health crisis.
- Cooperative federalism: the CAQM shows how a cross-state problem needs coordinated action.
- Sustainable cities: clean air advances SDG 11 (sustainable cities) and SDG 3 (health).
Exam relevance in one paragraph
For CDS/OTA GK, retain: the Commission for Air Quality Management (CAQM) is a statutory body created under the CAQM Act, 2021 (replacing the EPCA) to manage air quality across the NCR and adjoining areas of Haryana, Punjab, Rajasthan and Uttar Pradesh; it uses the Graded Response Action Plan (GRAP), a stage-wise plan tied to the Air Quality Index (Good to Severe), which tracks eight pollutants (PM2.5/PM10 being most harmful) and is monitored by the CPCB; major pollution sources include vehicles, industry, dust and seasonal stubble burning, tackled under the Air Act 1981, the Environment Act 1986 and the National Clean Air Programme (NCAP). For the essay, frame it as coordinated action for clean air and public health.
🎯 Practice MCQs
Q1. The CAQM is a: (a) statutory body (b) constitutional body (c) private company (d) court → (a) — a statutory body (CAQM Act, 2021).
Q2. The CAQM manages air quality in: (a) the NCR and adjoining areas (b) all of India (c) only Mumbai (d) coastal states → (a) — Delhi-NCR and adjoining areas.
Q3. The CAQM replaced which earlier body? (a) EPCA (b) CPCB (c) NGT (d) NITI Aayog → (a) — the EPCA.
Q4. GRAP stands for: (a) Graded Response Action Plan (b) Green Rural Action Programme (c) General Reserve Air Policy (d) Grid Response Alert Plan → (a) — Graded Response Action Plan.
Q5. GRAP actions are triggered based on the: (a) Air Quality Index (b) rainfall (c) stock market (d) temperature only → (a) — the AQI.
Q6. Which pollutant is the most harmful to health? (a) PM2.5 (b) oxygen (c) nitrogen (d) argon → (a) — fine particulate matter PM2.5.
Q7. The AQI in India tracks how many pollutants? (a) eight (b) two (c) twenty (d) four → (a) — eight.
Q8. Air quality data is monitored centrally by the: (a) CPCB (b) SEBI (c) TRAI (d) ISRO → (a) — the Central Pollution Control Board.
Q9. A major seasonal source of NCR pollution is: (a) stubble (parali) burning (b) sea spray (c) volcanoes (d) glaciers → (a) — crop-residue (stubble) burning.
Q10. An AQI of 401–500 is categorised as: (a) Severe (b) Good (c) Moderate (d) Satisfactory → (a) — Severe.
Q11. The main law to control air pollution is the: (a) Air (Prevention and Control of Pollution) Act, 1981 (b) IPC (c) RTI Act (d) Companies Act → (a) — the Air Act, 1981.
Q12. The national programme to reduce particulate pollution in cities is: (a) NCAP (b) MGNREGA (c) Ujjwala (d) PM-KISAN → (a) — the National Clean Air Programme.
Q13. Winter pollution in Delhi is trapped near the ground by: (a) temperature inversion (b) heavy rain (c) strong winds (d) high tide → (a) — temperature inversion.
Q14. A technology to manage crop residue instead of burning is the: (a) Happy Seeder / bio-decomposer (b) Bt seed (c) drip irrigation (d) cold storage → (a) — the Happy Seeder / bio-decomposer.
Q15. GRAP is significant because its actions are: (a) pre-emptive (before pollution peaks) (b) only after the season (c) voluntary only (d) for rural areas → (a) — pre-emptive, stage-wise.
📋 How this gets asked (PYQ pattern)
Air pollution is a high-frequency CDS/OTA environment set. The reliable framings are the CAQM (statutory, 2021, replaced EPCA), GRAP (AQI-based stages), the AQI/PM2.5, and the Air Act 1981/NCAP. A common trap calls the CAQM a constitutional body or confuses CAQM (policy/coordination) with CPCB (monitoring). The fresh 2026 hook is the NCR enforcement drive — ideal for "which body / which plan / which pollutant" items. We reference the pattern, not any exact past question.
Preparing for CDS or OTA? Air pollution, environmental bodies and clean-air policy are high-yield environment topics and strong essay material on public health. Follow our daily CDS/OTA current affairs and train with serving-officer faculty in the upcoming Cavalier courses in Delhi.
✍️ Written by Aditya Tiwari — Economy & current-affairs faculty at The Cavalier. Reviewed by the Cavalier Faculty Desk. The Cavalier, founded by ex-Army officers, has trained NDA/CDS/SSB aspirants since 2001 (Facebook · YouTube).
Source: PIB / Commission for Air Quality Management, 21 July 2026. Facts cross-verified with independent sources.