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Tuesday brought citizens of this heavily contaminated metropolis encountered inhaling extremely polluted air that registered in the "severe" category.

Record-Breaking Pollution Levels

Multiple areas of the capital recorded an AQI above 500, which represents 10x the recommended level recommended by the WHO.

Certain monitoring stations, levels of dangerous airborne particles soared to of eighteen hundred, amounting to 15-20x higher than safe limits.

Pyrotechnics Restrictions and Recent Developments

For the past four years, authorities had maintained a comprehensive restriction on the sale and use of pyrotechnics during celebrations due to their significant contribution to the dangerous smog that covers the metropolis as colder weather sets in.

Yet in recent months, the current local administration appealed to the highest court to propose a easing of the restrictions.

They proposed allowing "green crackers" – historically doubted by conservation groups as being only roughly 30 percent lower impact – as a balance between "tradition and environment".

Judicial Verdict and Enforcement

To the disappointment of medical and ecological campaigners, the court approved the request, mandating that eco-friendly pyrotechnics could be ignited during designated time windows throughout the celebrations.

Throughout the festival evening, there was extensive disregard of the time restrictions across the city, with little enforcement regarding whether the firecrackers being used were actually the more environmentally friendly variety.

Many monitoring devices throughout the city registered pollution reaching highest levels around late evening to some of the worst readings seen during celebrations in at least the past three years.

International Consequences

The proliferation of firecrackers during the celebrations also initiated a blame game with neighbouring the neighboring country, with officials in Pakistani Punjab partly blaming deteriorating pollution levels in Lahore on contaminants coming from neighboring India following the festivities.

Chronic Environmental Issue

Alarmingly severe levels of air contamination in the city have continued as a major problem for more than 15 years, with the problem gradually deteriorating.

Near Diwali, the concentration of dangerous airborne contaminants in the environment has been documented to increase dramatically to seventy percent above the peak levels ever recorded in Beijing, which was previously viewed as the planet's dirtiest metropolis.

Various Pollution Sources

This crisis in Delhi is caused by a convergence of different contributors including transportation pollution, airborne particles, construction activities, rubbish burning and haze from crop residue ignition in neighbouring areas of farming communities.

Within these states, rural residents illegally set their fields on fire to clear them quickly, creating hazardous smog that remains stagnant over the capital as colder air arrives.

Public Health and Financial Consequences

Both financial and medical consequences on the nearly 33 million residents calling home the Delhi area is significant, according to various investigations.

The contaminated air causes elevated rates of nervous system, cardiovascular and breathing disorders, and can even lead to cancer.

Environmental contamination is projected to be accounting for approximately 10k early fatalities per year in the capital.