Delhi’s air has now sat in the ‘very poor’ band for a third straight day. The AQI stood at 369, and twenty monitoring stations slipped into ‘severe’. PM2.5, the fine particulate that travels deep into the lungs and on into the blood, was the main pollutant. What we have is a planning failure.
No single villain explains Delhi’s smog, and that is partly why no single cure has turned up. Through the year, the city’s air is fed by traffic, road and construction dust, industry, waste and biomass burning, and domestic fuel. October and November add a seasonal layer of smoke from farm fires in Punjab, Haryana and beyond, and Diwali fireworks put a sharp spike on top. That stuble burning is smaller than the blame game would have you believe. Last November, stubble burning accounted for about 7 per cent of Delhi’s PM2.5, down from roughly 20 per cent the year before. The air still stayed ‘very poor’ to ‘severe’ for much of the month. The Centre for Science and Environment concluded that local emissions, not farm fires, were keeping pollution high.
A 2026 study found Delhi’s boundary layer stayed under 1 km from November to January, with lower ceilings tied to higher PM2.5. Harvest, festivals, falling temperatures and still air come round on the same calendar every year. The response is the part that doesn’t turn up on time.
Take the Graded Response Action Plan, Delhi’s emergency response . It switches on once the air is already bad, so by design it acts after the damage has started. Of 17 invocations between January 2025 and January 2026, 13 came only after air quality had crossed the threshold.
CREA found that Delhi’s PM2.5 averaged 249 micrograms per cubic metre in November 2024, the highest for any November in eight years. It also pointed out that the stricter stages were enforced late, even though forecasters had flagged a severe day.
The deeper problem is jurisdiction. Delhi shares one airshed with Haryana, Uttar Pradesh, Punjab and Rajasthan but is governed state by state. The Commission for Air Quality Management was set up to close that gap.
Since 2018-19 the Centre has put over Rs 3,120 crore into crop-residue machinery, and the Commission has now ordered stubble burning to be eliminated entirely in 2026. Delhi’s winter plan for 2026-27, with its construction-dust ban from November 1, was announced before the smog arrived, which has not happened often.
A city doesn’t stay breathless by accident. It happens when every winter gets handled as an emergency rather than something on the schedule. What’s needed is a twelve months committment to clean air. The authorities must act on the forecast, not the reading. Early-warning systems can see a severe spell days ahead.
More importantly, take the sources one at a time, all year round. That means cleaner, more public transport, mechanised road sweeping and enforced construction norms, cleaner industrial fuel, and an end to landfill and roadside fires.
A plan that starts on November 1 is already late. Delhi doesn’t need a fire fighting approach every year. It needs to stop having an emergency every year.