clm-15740b5492351ac0
quantitative
In 2025, GRAP stages were invoked only after the AQI had already climbed past the threshold on 13 of 17 occasions
Permanent project revision
Revision 2026-08-20-source-dates · effective 2026-07-26
Superseded. A later revision exists: 2026-08-20-source-dates-2 →
Created the first structured Evidence Passport with 1 claim and 9 source dossiers.
sha256:2e793017a33e636adcac83dc7032ffb755f26fce115219b495385d263b3f0465
add /evidencePassport — Added claim-level evidence mapping and source dossiers.add /revisionHistory — Established a permanent, hash-addressed baseline revision.The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.
clm-15740b5492351ac0
quantitative
In 2025, GRAP stages were invoked only after the AQI had already climbed past the threshold on 13 of 17 occasions
This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.
Awaiting operator and domain-expert review; publication of this revision implies neither.
sha256:2e793017a33e636adcac83dc7032ffb755f26fce115219b495385d263b3f0465
src-6b8cccbc2b5d562dThe operative GRAP schedule published by the Commission for Air Quality Management: the four stages, their AQI bands and the measures attached to each.
src-1df5e0db1641f943Most recent revision: measures moved into earlier stages. Confirms the regime is active and being tightened.
src-52d2ac68935cba3dA worked example of the trigger firing: AQI of 425 recorded at 9 AM, Stage-III restrictions imposed the same day by the CAQM GRAP sub-committee.
src-16741c63db3cec9fAct 29 of 2021, assent 12 August 2021. The statutory basis for CAQM, which replaced the Supreme Court-mandated EPCA as the body that invokes GRAP.
src-0c68ecb2bf3d340eOfficial statement that DPCC operates 26 real-time monitoring stations connected to the central network; other Delhi stations are run by CPCB, IMD, IITM and MoHUA.
src-984d07f3f118de2fCPCB's public AQI app and dataset: hourly AQI updates plus a citizen complaint function, released under India's National Data Sharing and Accessibility Policy.
src-55a046bc2ef1a0c0Peer-reviewed. Finds Stage I and II show measurable improvement but Stage III and IV little; concludes GRAP gives limited, meteorology-dependent short-term relief limited by reactive activation.
src-2d015e486f342f87Independent research institute. Documents the invocation lag (13 of 17 occasions in 2025) and the coverage gap: 40 stations against an estimated 52-60 needed, covering about a third of Delhi's area.
src-47b937c11a0081ceReporters observed PWD tankers repeatedly watering the ground around monitors at Jahangirpuri and Anand Vihar; earlier reporting found stations sited behind trees and walls, against placement norms.