Health and Me

Itisha Arya

As Air Quality Drops, Delhi Enforces Stage 4 Measures Under GRAP 3: What It Means For You

grap 4 measures delhi air pollution

Delhi residents are once again dealing with heavy pollution as a dense layer of smog covered the city on November 22. In response to the worsening situation, the Commission for Air Quality Management (CAQM) on Saturday put GRAP Stage IV curbs into force, as several monitoring stations across the Capital recorded air in the ‘severe’ category.

Under the updated rules, the Government of National Capital Territory of Delhi and the NCR state administrations will decide whether public, municipal and private offices should function with only half their staff on site, with the remaining employees working from home. CAQM noted in its latest advisory, “CAQM has revised the GRAP schedule on 21.11.2025 to make it more stringent thus preventing further deterioration of air quality in Delhi-NCR.”

<h2>Which Measures Of GRAP 4 Are Being Taken Under GRAP 3?</h2>

As per CAQM, the following GRAP 4 steps will now be implemented during GRAP 3:

<ul><li>NCR state governments and GNCTD will consider allowing public, municipal and private offices to operate at 50 percent capacity, with the remaining staff working remotely.</li><li>The Central Government may also take a call on offering work-from-home options for employees in central government offices.</li></ul>

<h2>Other Restrictions In Delhi Under GRAP 3</h2>

Since GRAP 3 remains active in Delhi, activities such as non-essential construction, demolition work, and the use of older vehicle categories, including those below the Bharat Stage (BS)-IV emission norms, continue to be limited. People have been advised to minimise time spent outdoors, especially during the early mornings and late evenings when pollution is often at its peak. On Friday, the Delhi government also directed schools and other educational institutions to halt all sports and outdoor physical activities.

GRAP follows four levels, each tied to the Air Quality Index (<span>AQI</span>) at the time.

Stage I of GRAP begins when air quality reaches the “poor” range (AQI between 201 and 300, which can cause breathing discomfort after prolonged exposure).

Stage II is enforced when air turns “very poor” (AQI between 301 and 400, which can result in respiratory issues with continued exposure).

Stage III comes into effect when pollution becomes “severe” (AQI between 401 and 500, a level at which even healthy individuals may feel the impact and those with existing conditions face serious health risks).

Stage IV of GRAP is declared when pollution crosses into the “severe+” range (AQI above 500).

India’s national AQI framework, created by the Central Pollution Control Board (CPCB), categorises air quality based on its potential impact on health, ranging from mild discomfort to significant respiratory and heart-related problems.

Each stage of GRAP includes a fixed set of actions for authorities to follow. As pollution increases and GRAP moves to the next stage, measures from earlier levels continue. This creates a step-by-step response system designed to slow down the rise in pollution and prevent conditions from becoming even more harmful.

At the moment, GRAP III is in force in Delhi, as air quality has been shifting between the ‘severe’ and ‘very poor’ bands. A range of restrictions linked to this stage is already being implemented across the city.

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Delhi residents are once again dealing with heavy pollution as a dense layer of smog covered the city on November 22. In response to the worsening situation, the Commission for Air Quality Management (CAQM) on Saturday put GRAP Stage IV curbs into force, as several monitoring stations across the Capital recorded air in the ‘severe’ category.Under the updated rules, the Government of National Capital Territory of Delhi and the NCR state administrations will decide whether public, municipal and private offices should function with only half their staff on site, with the remaining employees working from home. CAQM noted in its latest advisory, “CAQM has revised the GRAP schedule on 21.11.2025 to make it more stringent thus preventing further deterioration of air quality in Delhi-NCR.”Which Measures Of GRAP 4 Are Being Taken Under GRAP 3?As per CAQM, the following GRAP 4 steps will now be implemented during GRAP 3:NCR state governments and GNCTD will consider allowing public, municipal and private offices to operate at 50 percent capacity, with the remaining staff working remotely.The Central Government may also take a call on offering work-from-home options for employees in central government offices.Other Restrictions In Delhi Under GRAP 3Since GRAP 3 remains active in Delhi, activities such as non-essential construction, demolition work, and the use of older vehicle categories, including those below the Bharat Stage (BS)-IV emission norms, continue to be limited. People have been advised to minimise time spent outdoors, especially during the early mornings and late evenings when pollution is often at its peak. On Friday, the Delhi government also directed schools and other educational institutions to halt all sports and outdoor physical activities.Stages of GRAPGRAP follows four levels, each tied to the Air Quality Index (AQI) at the time.Stage I of GRAP begins when air quality reaches the “poor” range (AQI between 201 and 300, which can cause breathing discomfort after prolonged exposure).Stage II is enforced when air turns “very poor” (AQI between 301 and 400, which can result in respiratory issues with continued exposure).Stage III comes into effect when pollution becomes “severe” (AQI between 401 and 500, a level at which even healthy individuals may feel the impact and those with existing conditions face serious health risks).Stage IV of GRAP is declared when pollution crosses into the “severe+” range (AQI above 500).India’s national AQI framework, created by the Central Pollution Control Board (CPCB), categorises air quality based on its potential impact on health, ranging from mild discomfort to significant respiratory and heart-related problems.Each stage of GRAP includes a fixed set of actions for authorities to follow. As pollution increases and GRAP moves to the next stage, measures from earlier levels continue. This creates a step-by-step response system designed to slow down the rise in pollution and prevent conditions from becoming even more harmful.At the moment, GRAP III is in force in Delhi, as air quality has been shifting between the ‘severe’ and ‘very poor’ bands. A range of restrictions linked to this stage is already being implemented across the city.