As the nation gears up for the joyous festivities of Diwali 2025, Delhi and the National Capital Region (NCR) are grappling with a familiar foe: deteriorating air quality. On October 19, 2025, the Air Quality Index (AQI) in the capital plunged into the “very poor” category, prompting the Commission for Air Quality Management (CAQM) to immediately enforce Stage-II restrictions under the Graded Response Action Plan (GRAP). With Diwali fireworks poised to exacerbate pollution levels, authorities have issued urgent calls for restraint to safeguard public health.
Air Quality Plummets: AQI Readings and Triggers
Delhi’s AQI averaged 367 on Sunday morning, according to the Central Pollution Control Board (CPCB), crossing the threshold for GRAP-II activation. Out of 38 monitoring stations, 12 reported “very poor” levels by evening, with hotspots like Noida and Ghaziabad already breaching the 300-mark. Forecasts from the India Meteorological Department (IMD) and Indian Institute of Tropical Meteorology (IITM) predict a further slide into “severe” territory post-Diwali, driven by stagnant winds, low temperatures, and emissions from firecrackers.
The pre-Diwali spike is attributed to a mix of vehicular exhaust, industrial emissions, construction dust, and early firecracker bursts—despite negligible stubble burning in neighboring Punjab this season. Environmentalists warn that the festival’s tradition of widespread fireworks could release harmful particulate matter (PM2.5 and PM10), ozone, and toxic gases, posing severe risks to respiratory health, particularly for children, the elderly, and those with pre-existing conditions.
GRAP-II Restrictions: Key Measures in Force
GRAP-II, invoked to prevent escalation, introduces targeted curbs across Delhi-NCR to curb emissions. Here’s a breakdown of the immediate actions:
| Category | Restrictions |
|---|---|
| Construction | Ban on all construction and demolition activities in Delhi and select NCR districts, except for essential projects like railways and metro works. |
| Industrial Operations | Closure of polluting units (e.g., stone crushers) in Delhi and NCR outskirts; stricter emission norms for industries using coal or wood. |
| Power Generation | Prohibition on diesel generator (DG) sets except for emergencies; coal-based plants must switch to gas or higher compliance levels. |
| Transportation | Interstate buses (non-electric, non-CNG, non-BS-VI diesel) barred from entering Delhi; enhanced parking fees to discourage private vehicles; increased frequency of public transport like metro and DTC buses. |
| Waste Management | Ban on open garbage burning; mandatory daily mechanical sweeping and water sprinkling on roads. |
| Food Sector | Restaurants, hotels, and street vendors must avoid coal/wood for cooking, opting for cleaner fuels like PNG or electricity. |
These measures will remain in effect until air quality improves or escalates to GRAP-III (AQI >400), which could include bans on non-essential diesel vehicles and private construction. The CAQM emphasized enforcement through flying squads and fines up to ₹1 lakh for violations.
Supreme Court Green Lights ‘Eco-Friendly’ Fireworks—With Caveats
In a timely ruling on October 15, 2025, the Supreme Court permitted the sale and use of “green firecrackers”—certified by NEERI and PESO for reduced emissions—in Delhi-NCR from October 18 to 21. These fireworks feature smaller shells, zero barium nitrate, and lower raw material content, potentially cutting pollution by 30-40% compared to traditional ones.
However, the nod comes with strict timelines:
- Bursting allowed only between 8:00 PM and 10:00 PM on October 19 and 20 (Diwali eve and day).
- No fireworks on other days, including weddings or personal events.
- Complete ban on series/bursting crackers, flower pots, and sky lanterns.
The decision reverses a blanket ban extended until March 2025, but critics like environmental activists argue it “defies logic” given the already fragile air quality. “Even ‘green’ crackers add to the toxic load during inversion conditions,” noted a report from The Wire, urging a shift to laser shows and community celebrations.
Health and Environmental Impacts: A Call for Responsible Festivities
Diwali’s sparkle often comes at a steep cost: Last year, post-festival AQI spiked to 500+, leading to school closures and hospital admissions for asthma and bronchitis. This year, with favorable winds absent, experts predict similar or worse outcomes. “Limit exposure—stay indoors during peak hours, use masks, and avoid outdoor activities,” advised the Delhi government.
The CAQM and AAP-led administration are ramping up awareness campaigns, promoting “green Diwali” initiatives like diya lighting and virtual fireworks. Metro services have been extended, and special pollution-control drones are monitoring hotspots.
Looking Ahead: A Breath of Fresh Air for Delhi?
As families light diyas on October 20, the focus shifts from celebration to collective responsibility. While GRAP-II buys time, long-term solutions—like electric vehicle adoption, green belts, and stricter stubble management—remain crucial. Delhi’s battle against smog is a stark reminder of urban India’s environmental fragility, but with civic participation, this Diwali could mark a turning point toward cleaner skies.
Stay updated with live AQI trackers on the CPCB app, and share your eco-friendly Diwali tips in the comments. Wishing all a safe and sparkling festival!
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