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As Tuesday dawned citizens of this heavily contaminated metropolis encountered exposed to extremely polluted air that registered in the "alarming" range.

Record-Breaking Pollution Levels

Multiple areas of Delhi showed an pollution measurement over 500, which equals a tenfold increase over the safe limit set by the global health authority.

Certain monitoring stations, readings of PM2.5 and PM10 soared to of 1,800, amounting to 15-20x exceeding acceptable levels.

Pyrotechnics Ban and Recent Developments

Beginning in 2020, the government had maintained a comprehensive restriction on the sale and use of fireworks during Diwali due to their major role to the dangerous haze that covers the city as colder weather sets in.

Nevertheless in recent months, the current city administration petitioned the supreme court to request a relaxation of the restrictions.

They proposed allowing "eco-friendly fireworks" – previously criticized by conservation groups as being only about 30% lower impact – as a middle ground between "cultural practices and public health".

Judicial Verdict and Implementation

Despite concerns of environmental and health campaigners, the court complied with the request, specifying that environmentally conscious fireworks could be set off during specific periods throughout the festival.

During the celebrations, there was extensive flouting of the time restrictions across the metropolis, with little enforcement regarding whether the pyrotechnics being used were actually the more environmentally friendly version.

Many monitoring devices throughout Delhi registered contamination reaching highest levels around midnight to extremely hazardous levels recorded during Diwali in at least recent memory.

Regional Effects

The proliferation of pyrotechnics during the festival also triggered a dispute with bordering Pakistan, with authorities in Pakistan's Punjab partially attributing declining pollution levels in Lahore on contaminants traveling from India following the celebrations.

Long-Standing Environmental Problem

Extremely elevated concentrations of pollution in the capital have continued as a significant problem for more than 15 years, with the condition gradually deteriorating.

Near Diwali, the concentration of dangerous airborne contaminants in the air has been observed to spike to significantly exceeding the peak records ever recorded in Beijing, which was formerly considered as the world's most polluted city.

Multiple Pollution Sources

The problem in the city is caused by a mix of multiple factors including automobile exhaust, dust, development work, waste incineration and smoke from agricultural fires in adjacent states of neighboring agricultural zones.

In these regions, rural residents regularly set their fields on fire to prepare for next season, producing hazardous smog that remains stagnant over the city as colder air arrives.

Medical and Economic Consequences

Public health and economic toll on the nearly 33 million residents living in the metropolitan zone is substantial, according to multiple research.

The contaminated air results in elevated rates of nervous system, heart and circulatory and lung conditions, and can potentially cause malignancies.

The pollution is calculated to be accounting for ten thousand early deaths annually in Delhi.