Stage IV GRAP Revoked as Delhi's Air Quality Improves; Vigilance on Stage I-III Measures Intensified
Stage IV GRAP Revoked as Delhi's Air Quality Improves; Vigilance on Stage I-III Measures Intensified
In a significant relief for Delhi and the National Capital Region (NCR), the Commission for Air Quality Management (CAQM) has announced the revocation of Stage IV ('Severe+') measures under the Graded Response Action Plan (GRAP) due to improved air quality. However, strict adherence to measures under Stages I, II, and III has been emphasized to prevent further deterioration.
Improvement in Air Quality
Delhi’s Air Quality Index (AQI) showed notable improvement, reaching 369 ('Very Poor') on December 24, compared to a peak of 401 ('Severe') recorded on December 16. This positive change was attributed to favorable meteorological conditions, including improved wind speed, as forecasted by the India Meteorological Department (IMD) and the Indian Institute of Tropical Meteorology (IITM).
Measures Under Stage IV ('Severe+')
The Stage IV measures, invoked on December 16 when AQI levels breached the 400 mark, were stringent. These included:
- A ban on industrial activities contributing to severe pollution.
- Suspension of construction activities.
- Prohibition of entry for non-essential trucks into Delhi.
The invocation of these measures aligned with directives from the Supreme Court, emphasizing the gravity of the pollution crisis.
Continued Vigilance with Stage I-III Measures
Despite the revocation of Stage IV restrictions, the CAQM has stressed that Stages I, II, and III of the GRAP will remain in effect. These stages involve:
- Monitoring emissions from vehicles and industries.
- Regulating construction activities to control dust.
- Enforcing restrictions on waste burning.
The commission reiterated the need for strict implementation and monitoring of these measures across the NCR.
Importance of the Citizen Charter
The CAQM has appealed to citizens to adhere to guidelines outlined under GRAP-III. These include:
- Reducing outdoor activities to limit exposure to polluted air.
- Minimizing vehicle usage and opting for public transport.
- Avoiding waste burning and contributing to pollution control efforts.
“Given the unpredictable nature of winter weather, citizens must remain vigilant and proactive to ensure AQI levels do not worsen,” the commission stated.
Monitoring and Future Directives
The CAQM Sub-Committee on GRAP assured that it will continue to monitor air quality trends closely. The body emphasized its readiness to issue additional directives based on air quality assessments and forecasts by IMD and IITM.
The Graded Response Action Plan (GRAP) Explained
GRAP is a systematic approach to combat air pollution in Delhi-NCR. It prescribes a set of emergency measures corresponding to AQI levels, ranging from 'Moderate' to 'Severe+'. The plan is instrumental in mitigating pollution during critical periods and ensuring coordinated efforts among various agencies.
Conclusion
The revocation of Stage IV GRAP measures marks a temporary respite for Delhi and NCR residents. However, the continued implementation of Stages I-III underscores the need for sustained efforts to control air pollution. Both authorities and citizens play a crucial role in ensuring that the region's air quality does not deteriorate further.

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