As Diwali 2025 approaches, Delhi and the wider National Capital Region (NCR) are facing a serious air-quality crisis. On the morning of October 20, 2025, Delhi’s Air Quality Index (AQI) shot into the “very poor” to even “severe” category in some areas — for example, one monitoring station recorded AQI readings over 400.
In response, the Commission for Air Quality Management (CAQM) invoked Stage II (GRAP 2) of the action plan for Delhi-NCR on Sunday evening, stating that all measures under Stage I and II must now be enforced with full vigour.
The timing is critical: the festival of lights often triggers heavy usage of firecrackers, increased vehicular traffic, dust from construction and ambient pollution sources, all of which combine with stagnant meteorological conditions (cooler winds, low mixing height) to trap pollutants near the ground.
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What Is GRAP and What Does Stage II (GRAP 2) Entail?
The Graded Response Action Plan (GRAP) is a framework designed to respond to worsening air-quality levels with escalating curbs as defined by AQI bands. The stages are:
Stage I – when AQI reaches “Poor” (201–300)
Stage II – when AQI is in “Very Poor” (301–400)
Stage III / Stage IV – when AQI hits “Severe” or “Severe +” (401-450/above)
GRAP 2 (Stage II) therefore means that air quality has crossed the “very poor” threshold and more stringent measures must now be applied. The order issued by CAQM indicates that in addition to all actions under Stage I, all agencies must step up enforcement and trigger additional measures.
Key measures under GRAP 2 include:
Daily mechanical or vacuum road-sweeping and water-sprinkling on major roads and dust-prone zones.
Enhanced inspections (and increased penalties) of construction and demolition sites for dust suppression norms.
Restrictions on diesel generator (DG) sets, especially in non-essential use.
Entry-restrictions for interstate buses into Delhi unless they meet clean fuel (CNG/electric) or BS-VI diesel standards.
Encouraging public transport: increased frequency of metro, buses; discouraging private vehicles through higher parking fees or restrictions.
Directions to RWAs (resident welfare associations) to avoid open-burning of biomass or waste, provide electric heaters to guards/gardeners to discourage heating via fire-wood or coal.
Why the Urgency Before Diwali?
The combination of factors has alarmed the authorities:
The AQI had already crossed into “very poor” territory days leading into Diwali. On October 19, readings around 296 at 4 pm and 302 by 7 pm triggered the action.
Meteorological conditions (cooler nights, low wind/ventilation) are expected to worsen dispersion of pollutants.
The festival means likely additional load: fire-cracker smoke, heavy vehicle traffic, consumer fireworks, increased household emissions.
The region is already dealing with background pollution from stubble-burning in neighbouring states, vehicle emissions, dust from construction and local sources.
By activating GRAP 2 now, the hope is to prevent slipping into Stage III or Stage IV, which would bring far more restrictive measures (like school closures or odd-even vehicle usage) and heightened health risks.
What It Means for You: Citizen Actions & Precautions
For residents of Delhi-NCR and those visiting, this is a time to act smartly:
Limit outdoor exposure, especially for vulnerable persons (children, elderly, those with respiratory/heart conditions).
Use N95 or equivalent masks when outdoors, especially in traffic jogs or polluted zones. Studies compare high-pollution exposure to smoking many cigarettes a day.
Prefer public transport, avoid unnecessary car trips. If driving, avoid idling, ensure your vehicle is service-well to minimise emissions.
Avoid or minimise firework bursting, especially in enclosed or down-wind areas. Use only certified “green crackers” and follow time limits. The government has urged this.
Avoid burning waste, leaves or biomass in open areas.
On construction sites or if you’re managing one: ensure dust suppressants, water-sprinkling, sheeted trucks, avoid overnight stock-piling of dusty material.
At home: consider using air-purifiers if possible, avoid smoking indoors, keep windows closed during morning/evening high pollution periods, and ventilate when air improves.
What If Things Get Worse?
If pollution continues to climb and the AQI tanks into Stage III or IV (“Severe” or “Severe +”), further curbs may follow including:
Total ban on private diesel vehicles, odd-even schemes.
Closure of schools, suspension of construction (especially outdoor heavy works), stoppage of DG-sets for non-essential power backup.
More stringent traffic regulations and possibly restrictions on bursting of firecrackers.
The reason authorities are acting now: better to catch rising pollution early than wait and then have to enforce harsher emergency measures.
Looking Ahead: The Bigger Picture
While short-term curbs can help ease the current episode, Delhi’s air-quality challenge is structural and recurring each winter. Fire‐crackers, crop‐burning, traffic emissions, construction dust, stagnant weather all interact. Experts say long-term solutions will require strengthening public transport, shifting away from diesel/polluting fuels, stricter compliance at construction sites, regional cooperation on crop‐residue burning and better urban planning.
This year’s early invocation of GRAP 2 shows heightened awareness and intention to intervene earlier — but its success will depend on implementation, citizen cooperation and the weather.
Final Thoughts
With Diwali around the corner and air quality already crossing danger zones, Delhi-NCR is under a serious pollution alert. The invocation of GRAP 2 is the signal: we must act now. Authorities have laid out the measures, but the effectiveness depends on everyone’s cooperation — from pausing unnecessary outdoor activity, avoiding fire‐crackers, switching to public transport and supporting dust control efforts. If we all pitch in, we might avert the worst smog levels and breathe a little easier this season.
