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3d ago

Delhi’s AQI Eases to ‘Poor’ for Second Day as GRAP‑4 Curbs Lifted

Regulators credit strong winds for the dip, signaling a likely slide back to very poor conditions in the coming days.

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In Noida region, between December 14 and December 22, dust suppression formed a key part of the response as pollution control measure (Sunil Ghosh/HT Photo)
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Commuters use face masks to avoid air pollution.

Overview

  • The CPCB put Delhi’s 24‑hour average AQI at 234 at 4 pm on Thursday, improving from 271 on Wednesday and 412 on Tuesday.
  • The CAQM revoked Stage IV restrictions under the Graded Response Action Plan, with Stages I–III continuing in force across Delhi‑NCR.
  • IMD and IITM forecasts warn of weakening winds, fog and lower mixing, with AQI projected to return to the very poor band by the weekend and persist there.
  • Official DSS data identified vehicles as the largest pollution source (about 17–18.5%), with Jhajjar in Haryana the top external contributor; industry, construction and waste burning added smaller shares.
  • Authorities reported stepped‑up measures and network upgrades, announcing six new monitoring stations including at JNU and IGNOU, and citing thousands of vehicle challans, truck diversions and large construction‑waste removals.