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GS3 · Air pollution

GRAP Stage IV revoked as Delhi AQI improves to 271

1 min readPollution
Battle IAS current affairs title card: GRAP Stage IV revoked as Delhi AQI improves to 271 (GS3 · Air pollution, 24 December 2025)

What happened

  • CAQM revoked GRAP Stage IV on 24 December 2025 when Delhi’s AQI improved to 271; Stage IV had been imposed on 13 December when AQI crossed 450 [PIB].
  • Stages I–III remain in force [PIB].

Background

  • Stage IV bans entry of most trucks and halts construction.

Why it matters

  • It was the season’s worst spell. Stage IV lasted 11 days.

How to use this in Mains

GS-III Conservation, environmental pollution and degradation

  1. As per PIB (2025-12-24): CAQM revoked GRAP Stage IV on 24 December 2025 when Delhi's AQI improved to 271; Stage IV had been imposed on 13 December when AQI crossed 450.
  2. It was the season's worst spell. Stage IV lasted 11 days.
Quotable data point

CAQM revoked GRAP Stage IV on 24 December 2025 when Delhi's AQI improved to 271.

PIB: MoEFCC: GRAP IV revoked, 24 Dec 2025

Exam angle

UPSC

Prelims: GRAP.

Practice MCQs

Original practice questions (not PYQs).

Practice · UPSC

AQI on revocation

Answer (b) & explanation

PIB.

Practice · UPSC

Stage IV invoked on

Answer (b) & explanation

PIB.

Practice · UPSC

Stage IV trigger AQI

Answer (c) & explanation

PIB.

Go deeper

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Official source: PIB: MoEFCC: GRAP IV revoked, 24 Dec 2025

facts from cited sources only; faculty review pending