Delhi-NCR Pollution Crisis: GRAP-IV Reimposed, Air Quality Severe
## Air Quality and GRAP Implementation in Delhi-NCR
The article discusses the implementation of Stage IV of the Graded Response Action Plan (GRAP) in Delhi-NCR, triggered by severe air pollution levels.As of january 17, 2026, the information regarding the November 21, 2025 modified GRAP requires verification as the date has passed.###
What is GRAP and its Stages?
The Graded Response Action Plan (GRAP) is a set of measures implemented in Delhi-NCR to combat air pollution, categorized into four stages based on the Air Quality Index (AQI). The Central Pollution Control Board (CPCB) details the GRAP framework. Stage I is activated when the AQI is between 0-100, Stage II between 101-200, Stage III between 201-300, and Stage IV when it exceeds 450, reaching the ‘severe+’ category.
Detail: Each stage introduces progressively stricter measures to reduce pollution sources, including restrictions on construction, industrial activities, vehicle usage, and increased public transport. The measures under earlier stages remain in effect as pollution worsens and higher stages are triggered.Example: The Environment Pollution (Prevention and Control) Authority (EPCA) initially proposed the GRAP, and it has been revised and implemented by the Ministry of Environment, Forest and Climate Change.
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Stage IV Restrictions on Vehicle Movement
Stage IV of GRAP does not impose a complete ban on private vehicle movement, but rather focuses on restricting vehicles based on their emission standards and fuel type. The Hindu reported in November 2023 that BS-III petrol and BS-IV diesel vehicles are prohibited from plying in Delhi-NCR during this phase, with exceptions made for vehicles providing essential services.Detail: This targeted approach aims to reduce emissions from older, more polluting vehicles while allowing newer, cleaner vehicles to continue operating.Essential services, such as medical transport and law enforcement, are exempt to ensure public safety and functionality.
Example: During a severe pollution episode in November 2023, the Delhi government enforced Stage IV restrictions, leading to a noticeable decrease in traffic congestion and a slight improvement in air quality, according to Down to earth.
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Current Air Quality Status (as of January 17, 2026)
As of January 17, 2026, the current AQI levels in Delhi-NCR and weather Stage IV of GRAP is currently active requires verification from authoritative sources.
Detail: Real-time air quality data is crucial for determining the appropriate GRAP stage. the Central Pollution Control Board’s (CPCB) AQI portal provides up-to-date information on air quality across India.
Example: If the AQI consistently exceeds 450 across delhi-NCR, Stage IV measures would be implemented, including the restrictions on BS-III petrol and BS-IV diesel vehicles. However, without current data, this remains speculative.