SF Prep Notes

CAQM invokes GRAP Stage-III in Delhi-NCR as AQI hits 424

On 14 November 2024 in Delhi, the CAQM sub-committee invoked Stage-III ('Severe') of the Graded Response Action Plan across the NCR from 8 AM on 15 November, after Delhi's AQI reached 424.

Summary

On 14 November 2024 in Delhi, the Commission for Air Quality Management (CAQM) sub-committee invoked all actions under Stage-III ('Severe') of the revised Graded Response Action Plan (GRAP) across the NCR from 8 AM on 15 November 2024, in addition to Stages I and II. Delhi's daily average AQI was 424 that day, as per the CPCB bulletin. Dense fog and north-westerly winds carrying pollutants to Delhi were cited as the main causes. The CAQM noted that in 2023 Stage-III had been invoked on 2 November, much earlier than this year.

Key facts

Date/place
14 Nov 2024, Delhi
Decision
GRAP Stage-III ('Severe') across NCR
Effective
8 AM, 15 Nov 2024
AQI (CPCB)
424
Causes
Dense fog; north-westerly winds
2023
Stage-III invoked on 2 Nov 2023

Practice MCQs 2 questions

Q1 Advanced

What was Delhi's daily average AQI on 14 November 2024, when CAQM invoked GRAP Stage-III?

Show answer

Correct answer: B — 424

PIB (MoEFCC): Delhi's daily average AQI was 424 as per the CPCB bulletin.

Q2

Stage-III of the revised Graded Response Action Plan (GRAP) corresponds to which air quality category?

Show answer

Correct answer: A — Severe

PIB (MoEFCC): Stage-III of the revised GRAP is 'Severe' air quality; Stage-IV is 'Severe+'.

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