Permanent project revision
Revision 2026-08-27-correction-run · effective 2026-08-27
Current revision. This is the snapshot used by the live entity page.
Date the independent analysis from the page and record the verbatim locator for the count of late invocations.
sha256:7efe677ebe7a03ae7e0679c5226dca333ee1a83ef37268f90898af7698935c67
replace /snapshot/projectFingerprint — Updated projectFingerprint to the current sourced project record.replace /snapshot/claims — Updated claims to the current sourced project record.replace /snapshot/sources — Updated sources to the current sourced project record.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.
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quantitative
About 40 continuous monitoring stations run by Delhi's pollution control committee, the central board and national research institutes feed an hourly Air Quality Index that is published publicly and through the SAMEER app
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quantitative
Since 2017 that number has legal force: under the Graded Response Action Plan, defined AQI thresholds trigger escalating curbs across the capital region
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descriptive
A later revision extended the trigger to the forecast, so a stage can be invoked when the AQI is merely expected to cross a threshold under the dynamic model and the IMD/IITM weather forecast
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quantitative
the Commission for Air Quality Management tightened the schedule again in November 2025
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descriptive
Delhi's monitors have been accused of being sprayed with water or dropping offline at peak pollution
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quantitative
In 2025, GRAP stages were invoked only after the AQI had already climbed past the threshold on 13 of 17 occasions (CEEW analysis)
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quantitative
extending it to the forecast was the right repair, and in 2025 the stages were still invoked after the air had already gone bad on 13 of 17 occasions
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descriptive
reporters found a public works tanker spraying water around the monitor in Jahangirpuri while the dust and debris beside it went untouched
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.
sha256:7efe677ebe7a03ae7e0679c5226dca333ee1a83ef37268f90898af7698935c67
src-6b8cccbc2b5d562dThe Commission's own GRAP schedule as a PDF: the four stages, their AQI bands and the measures each stage triggers. The document states no publication date.
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-0c68ecb2bf3d340eDelhi environment department page on ambient air quality. No publication date is recorded: the page could not be retrieved when this entry was checked, so nothing about its content is asserted here beyond the department's own description of the page in its navigation.
src-984d07f3f118de2fThe government open-data catalogue entry for the SAMEER national AQI feed. A continuously maintained catalogue page, so it states no publication date.
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 analysis, published 21 May 2026, carrying the count of late invocations and the argument for acting on forecasts rather than on measured exceedances.
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.
src-8a042af3cbd8544eGovernment release on the revised GRAP: actions are triggered when Delhi’s AQI goes beyond a threshold or is expected to go beyond it under the dynamic model and the IMD/IITM meteorological forecast.
src-955b0d09c6f30471Full text of the Act that constitutes the Commission administering GRAP. Replaces the India Code link for the same Act, which now returns 404.