Supreme Court orders daily checks on Delhi’s Diwali pollution
Officials must now prove pollution controls protect public health.
Overview
Delhi’s winter air has reached dangerous levels as Diwali fireworks threaten to add more pollution. levels topped 461 micrograms per cubic metre in some areas, and the daily reached 324, rated very poor. Cold weather and weak winds keep pollution from traffic, dust, construction, coal and firewood, industry, farm fires and fireworks close to the ground.
The has imposed , including tougher construction checks, road cleaning, parking charges, vehicle inspections and more public transport. The Supreme Court permits only during limited hours on November 7 and 8. A full ban returns on November 9. Officials will compare pollution readings before, during and after Diwali. The results will depend on weather, compliance and illegal fireworks, while people with breathing problems face the greatest immediate risk.
Timeline
The Supreme Court ordered pre-Diwali, Diwali and post-Diwali air-quality monitoring
The Supreme Court directed the , in consultation with , to prepare daily air-quality reports for November 2–6, November 7–8 and November 9–30, covering the periods before, during and after Diwali.
The Supreme Court permitted certified green firecrackers only during limited Diwali windows
The Supreme Court allowed only certified in Delhi-NCR on November 7 and 8, with firing permitted from 6:00 a.m. to 7:00 a.m. and 8:00 p.m. to 10:00 p.m. The order required certification linked to and , restricted sales and use to approved products, and prohibited fireworks within 300 metres of specified health, care and . The court restored a complete firecracker ban from November 9, recognising that even a limited fireworks period could produce a sharp particulate spike in already stagnant air.
The Commission for Air Quality Management activated Stage II GRAP restrictions across Delhi-NCR
The moved into Stage II of the as pollution reached the very poor range. The response included stronger dust-control and road-cleaning measures, tighter checks on construction activity, more mechanised sweeping and restrictions on polluting fuel use. Local authorities and enforcement agencies were tasked with implementing the measures while monitoring traffic, construction sites and major pollution hotspots.
Winter pollution intensified in Delhi as emissions accumulated under sluggish winds
Officials and air-quality assessments attributed Delhi’s deterioration to a combination of transport emissions, , construction, road dust, industrial and residential sources. Falling temperatures and sluggish winds limited dispersion, allowing pollution to accumulate near the surface ahead of Diwali.
Delhi’s air quality worsened as Diwali pollution controls came under pressure
Delhi’s daily average reached 324, in the very poor range, on November 2, prompting the to invoke across the NCR. The available record supports worsening air quality, but not the specific weather-based accumulation claim.
Delhi expanded traffic and public-transport measures to reduce pre-Diwali emissions
Authorities increased vehicle inspections and sought to limit emissions from as traffic and congestion added to the pollution load. Measures also included higher parking charges, additional services, staggered office timings and intensified road-cleaning operations. The measures targeted exposure from transport and dust, but their short-term effect depended on compliance, traffic volumes and whether stagnant weather continued.