‘Enjoying Delhi weather?’ CJI’s quip as Supreme Court takes up air pollution crisis, flags vehicular emission

The Supreme Court opened a hearing on Delhi-NCR’s worsening air pollution with Chief Justice Surya Kant asking whether people were enjoying Delhi’s weather. The three-judge bench then focused on an AQI near 400, heavy traffic and the limits of restrictions. It said lasting improvement requires changed public behaviour and greater awareness.

The bench identified vehicular pollution as a major problem on roads linking Delhi with Ghaziabad, Greater Noida, Gurugram and Faridabad. It also discussed industrial emissions, construction and road dust, and stubble burning. Authorities described measures including vehicle curbs, geo-tagged pollution-under-control certificates and action against visibly smoky vehicles.

The court warned that simply adding orders could encourage more violations. It also questioned school closures and online classes, saying decisions should follow expert advice behind GRAP. On Friday, thick smog pushed Delhi’s AQI to 391, close to the severe category, making enforcement and public cooperation increasingly important.

The Air Quality Index, or AQI, is a single number used to communicate how polluted the air is. Higher readings indicate worse air quality and greater concern for people exposed to it. The index combines pollution measurements into an easier public warning than listing every pollutant separately.

Delhi’s overall AQI stood at 391 on Friday. The article describes this as bringing the city to the brink of the severe category. The Supreme Court also said the AQI was already touching 400 during its discussion. Thick smog covered the national capital as the reading worsened sharply.

A reading near 400 signals an urgent pollution episode, not an ordinary bad-air day. The court therefore examined vehicles, dust, industrial emissions and crop-residue fires, while also discussing schools and outdoor workers. The article does not provide a detailed health advisory linked specifically to 391, but it shows why authorities were considering responses under GRAP.

Delhi-NCR faced a broad pollution crisis rather than a single-source problem. The Supreme Court discussed an AQI close to 400 and thick smog over Delhi. It highlighted pollution from vehicles, industries, construction and demolition, road dust, and crop-residue burning. These sources can operate together, making cleanup harder.

Traffic was the court’s strongest concern. Roads connecting Delhi with Ghaziabad, Greater Noida, Gurugram and Faridabad carried large numbers of vehicles in bumper-to-bumper conditions. The Centre also listed five key areas for pollution control and described measures targeting smoky vehicles, pollution certificates and entry restrictions.

The immediate reality was a reading of 391, near the severe category. The court said restrictions alone would not solve the problem and could increase violations. It stressed awareness and changed behaviour, while relying on expert guidance behind GRAP for decisions such as school closures and online classes.

Vehicles release pollution directly into the air, and Delhi-NCR’s dense traffic puts many emissions close to people and buildings. The Supreme Court called vehicular pollution the major problem after observing the kinds and numbers of vehicles using roads across the region. Traffic therefore became a central focus of the hearing.

The bench pointed to roads connecting Delhi with Ghaziabad, Greater Noida, Gurugram and Faridabad. It described traffic across Delhi-NCR as heavy and bumper-to-bumper. Authorities said they were restricting certain vehicles, geo-tagging pollution-under-control certificates and acting against vehicles emitting visible smoke. Complaints from apps and social media helped identify them.

This source matters because it crosses city boundaries and affects commuters, roadside workers and residents. The article does not quantify vehicles’ exact share of pollution, but the court clearly treated them as the major cause. It also warned that repeated restrictions may fail unless drivers and the wider public change behaviour.

Severe pollution affects more than visibility or official AQI figures. Prolonged exposure to polluted air can irritate the eyes and throat and worsen breathing problems, according to established health knowledge. The article itself focuses less on medical symptoms and more on unequal exposure and lost opportunities.

The Supreme Court noted that poor people bear the greatest burden because they spend much of their time working on roads. It also said the festive season is often their only opportunity to earn a livelihood. That makes simply stopping outdoor activity difficult, even when smog is thick and air quality is near severe.

Delhi’s AQI reached 391, close to the severe category, while bumper-to-bumper traffic continued. The court questioned school closures and online classes and preferred expert advice under GRAP. The immediate challenge is protecting vulnerable people without removing essential work or education, while longer-term progress depends on reducing pollution at its sources.

The hearing questioned whether restrictions alone can solve Delhi-NCR’s pollution crisis. The Supreme Court said more orders could multiply violations, so people need greater awareness and must change daily behaviour. This approach targets compliance, not just the wording or number of rules.

For stubble burning, the bench said farmers should learn about alternatives, including machines that manage crop residue without setting it alight. Authorities also described vehicle measures, such as entry curbs, geo-tagged pollution-under-control certificates and action against visibly smoky vehicles. Cleaner public or low-emission transport is another practical direction, although the article does not announce a specific plan for it.

The current AQI of 391 showed that immediate action remained necessary. The court also wanted school and online-learning decisions to follow expert advice behind GRAP. A lasting response would combine public awareness, workable farming technology, effective vehicle controls and cooperation across Delhi-NCR rather than rely only on prohibitions.

The article identifies five major pollution areas: industrial emissions, vehicular pollution, construction and demolition dust, road dust and stubble burning. These sources release a mixture of fine particles and gases. Fine particles can remain suspended in air and enter the breathing zone, while gases can directly irritate the respiratory system or contribute to further pollution.

Vehicle engines burn fuel and produce exhaust. Crop-residue fires create smoke and ash. Construction activity and moving traffic lift dust from surfaces. Industrial facilities release emissions from fuel use and manufacturing processes. The article does not give chemical names or explain the detailed formation of particles, so these mechanisms are based on established environmental science.

Delhi’s smog episode showed how several sources can combine. The AQI reached 391, and the court singled out vehicles while also discussing stubble burning and dust. Authorities responded across all five areas, but the court said lasting improvement requires awareness and behaviour change, not only additional restrictions.