Delhi Pollution: Whats allowed and whats banned in national capital as GRAP stage IV restrictions kick in after AQI worsens

As Delhi continued to grapple with severe air quality, the Commission for Air Quality Management (CAQM) invoked Stage III and IV restrictions under the Graded Response Action Plan (GRAP) with immediate effect on Wednesday.  

This comes in line with directives from the Supreme Court aimed at curbing the rising pollution levels in the National Capital Region (NCR).  

On January 14, the national capital recorded an AQI of 275. However, dense fog, low temperatures, and poor dispersion conditions have led to a sharp increase in pollutant concentration levels. The AQI reached at 386 on January 15 and surged further, reaching 393 at 5 pm and 396 at 6 pm. As of now, the AQI has crossed the 300-mark, hence remaining in the severe category. Forecasts from India Meteorological Department (IMD) and IITM have indicated AQI may cross the critical 400-mark.  

What was SC's order regarding Delhi pollution?  

The Supreme Court, in its December 2024 order, instructed that Stage III restrcitions must be implemented if the AQI exceeds 350, and Stage IV measures must be invoked if AQI breaches 400. The CAQM has acted on these guidelines to curb further deterioration of air quality.  

Here's what comes under Stage III and IV restrictions:  

- Stage III (‘Severe’ AQI): Restrictions include a ban on construction and demolition activities except for essential projects like railways, metros, and national security infrastructure. Brick kilns, stone crushers, and mining activities are halted.  

- Stage IV (‘Severe+’ AQI): Stricter curbs are introduced, such as halting the entry of trucks into Delhi except those carrying essential commodities. Non-BS VI diesel vehicles are prohibited, and industrial activities reliant on unapproved fuels are suspended.  

Citizen advisory under GRAP  

The CAQM has urged citizens to follow the GRAP charter, which includes:  

1. Minimising outdoor activities and using public transport whenever possible.  

2. Avoiding the use of diesel generators and unnecessary vehicle use.  

3. Reducing waste burning and opting for carpooling or work-from-home arrangements.  

All concerned agencies in the NCR have been directed to strictly enforce, monitor, and review GRAP measures to ensure compliance. A vigilant approach is essential to prevent further escalation in air pollution levels.  

The Sub-Committee on GRAP will keep a close watch on the air quality scenario and forecasts from IMD/IITM. Periodic reviews will guide further actions as necessary. Residents and industries in the NCR must brace for a stricter regulatory environment as authorities strive to combat severe air pollution.