Delhi's Air Turns 'Very Poor': What GRAP Stage II Means for You
Delhi-NCR's AQI crossed 300 this week and GRAP Stage II kicked in. Here is what triggered it, what the rules actually restrict, and how to protect your lungs.
Delhi-NCR woke up to dense smog on 2 November, and by the afternoon the city's average Air Quality Index (AQI) had crossed 300 for the first time this winter, touching 324 and peaking near 428 at some monitoring stations. That pushed the region from "poor" into "very poor" territory, and the Commission for Air Quality Management (CAQM) responded the same evening by invoking Stage II of the Graded Response Action Plan (GRAP) across the entire National Capital Region.
If you live in or near Delhi, this is not just another news alert. Stage II changes what is allowed on the roads, at construction sites and in restaurant kitchens, and it is also the point where doctors start advising extra caution for children, older adults and anyone with asthma, COPD or heart disease.
Why this is trending now
AQI had been climbing steadily after Diwali: 117 ("moderate") on 31 October, 261 ("poor") on 1 November, then past 300 the next day. CAQM blamed "unfavourable meteorological conditions" - cooler air, low wind speed and fog trap pollutants closer to the ground in winter - and said forecasts from the India Meteorological Department and the Indian Institute of Tropical Meteorology showed no quick improvement, meaning "very poor" air could persist for several days.
What GRAP Stage II actually restricts
GRAP is a staged set of emergency actions tied directly to the AQI reading, not a one-time order. Each stage adds to the one before it:
Stage I (AQI 201-300, "poor")
Mechanical sweeping and water sprinkling on roads, a ban on open burning of waste, and stricter checks on dust at construction sites.
Stage II (AQI 301-400, "very poor")
Adds intensified dust control and anti-smog guns, more frequent metro and bus services, stricter Pollution Under Control (PUC) certificate checks, action against visibly polluting vehicles, tighter inspection of industries and brick kilns, and a ban on coal or firewood in tandoors at hotels, restaurants and roadside eateries.
Stage III (AQI 401-450, "severe")
Hybrid or online classes for younger students, a halt on non-essential construction, and curbs on certain diesel and petrol vehicles.
Stage IV (AQI above 450, "severe plus")
Entry bans on trucks not carrying essential goods, work-from-home advisories, and a full stop on construction and demolition work.
As of this week, Delhi was under Stage I and Stage II together. Schools were not ordered shut; the Directorate of Education closes or shifts schools to hybrid classes only once Stage III or IV is invoked, so check official circulars rather than assuming classes are cancelled.
How to protect your health right now
- Avoid outdoor exercise, jogging or cycling during peak traffic hours, especially early morning, when pollutants sit closest to the ground.
- Wear a well-fitting N95 or N99 mask outdoors; cloth or surgical masks do not filter fine particulate matter (PM2.5).
- Keep windows closed during the worst hours and use an air purifier indoors if you have one, especially in a child's or elderly person's room.
- Check your city's real-time AQI on the CPCB's app or website before planning outdoor time, rather than going by how the sky looks.
What most people miss
- Air pollution harms healthy people too, not only the already vulnerable. WHO links outdoor fine-particle pollution to 4.2 million premature deaths a year worldwide, mostly from heart disease, stroke, lung disease and lung cancer, not only in people who were already sick.
- Indoor air is not automatically safe. Fine particles seep in through doors, windows and gaps; a sealed room with no purifier can still have unhealthy PM2.5 levels during a smog spell.
- A mask only helps if it fits. Gaps at the sides of an N95 let unfiltered air in, which defeats the purpose of wearing one.
- The AQI number is a city average. Readings vary sharply by neighbourhood, and areas near traffic corridors or construction sites often run far worse than the official average suggests.
