CAQM invokes GRAP Stage-III across NCR as Delhi's AQI crosses 350
Delhi's AQI rose from 297 on 8 January to 357 at 4 pm on 9 January amid calm winds and fog.
Summary
The Commission for Air Quality Management (CAQM) Sub-Committee on the Graded Response Action Plan (GRAP) invoked all Stage-III actions across the National Capital Region with immediate effect on 9 January 2025 after Delhi's average AQI rose to 357 at 4 pm, according to the CPCB bulletin. Delhi's AQI had been 297 on 8 January and rose because of calm winds and foggy conditions. A 9-point Stage-III action plan, meant for 'Severe' air quality (Delhi AQI 401â450), came into force in addition to the Stage I and II measures already in force.
Key facts
- Date
- 9 January 2025
- Decision
- GRAP Stage-III invoked across NCR
- Delhi AQI
- 357 at 4 pm (297 on 8 January)
- Cause
- Calm winds and foggy conditions
- Stage-III category
- 'Severe' air quality, AQI 401â450
- Action plan
- 9-point plan, plus Stages I and II
Practice MCQs 3 questions
What was Delhi's average AQI at 4 pm on 9 January 2025, when CAQM invoked GRAP Stage-III?
Show answer
Correct answer: C â 357
PIB: Delhi's AQI breached the 350 mark at 4 pm as it clocked 357, per the CPCB bulletin.
Under the revised GRAP, Stage-III corresponds to which category of Delhi's air quality?
Show answer
Correct answer: D â 'Severe' (AQI 401â450)
PIB: Stage-III of revised GRAP is 'Severe' air quality (Delhi AQI ranging between 401â450).
What were cited as the reasons for the sharp rise in Delhi's AQI on 9 January 2025?
Show answer
Correct answer: A â Calm winds and foggy conditions
PIB: the AQI rose from 297 on 8 January to 357 on 9 January owing to calm winds and foggy conditions.