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As Tuesday dawned inhabitants of this heavily contaminated metropolis were faced with exposed to dangerously toxic air that was classified as the "severe" range.

Extremely High Air Quality Readings

Multiple areas of the capital registered an AQI above 500, which represents ten times the recommended level recommended by the World Health Organization.

In some locations, levels of dangerous airborne particles soared to of eighteen hundred, representing fifteen to twenty times above healthy limits.

Fireworks Ban and Current Changes

For the past four years, officials had implemented a complete ban on the purchase and ignition of pyrotechnics during Diwali due to their major role to the hazardous pollution that engulfs the city as the cold season sets in.

However in recent months, the recently formed regional leadership petitioned the judicial authority to request a modification of the restrictions.

Officials advocated for allowing "eco-friendly fireworks" – which have been questioned by environmentalists as being only roughly 30 percent lower impact – as a balance between "heritage and public health".

Court Decision and Reality

Despite concerns of environmental and health advocates, the court complied with the appeal, stipulating that eco-friendly pyrotechnics could be ignited during designated time windows throughout the festival.

During the celebrations, there was extensive disregard of the designated hours across the city, with insufficient monitoring regarding whether the pyrotechnics being used were actually the eco-friendly type.

Several monitoring devices throughout the city recorded air quality peaking around midnight to some of the worst levels seen during Diwali in at least the past three years.

Regional Consequences

Extensive ignition of firecrackers during the celebrations also initiated a controversy with neighbouring the neighboring country, with authorities in Pakistani the Punjab region pointing to deteriorating pollution levels in the city of Lahore on hazardous particles originating in neighboring India following the festivities.

Chronic Pollution Problem

Extremely elevated levels of pollution in the city have remained as a major problem for more than 15 years, with the condition continuing to worsen.

During celebratory seasons, the concentration of hazardous particulate matter in the atmosphere has been documented to increase dramatically to significantly exceeding the worst records ever recorded in the Chinese city, which was formerly considered as the world's most polluted city.

Various Contamination Sources

This crisis in the capital is resulting from a combination of different contributors including transportation pollution, dust, construction activities, waste incineration and haze from farm burning in neighbouring areas of Punjab and Haryana.

Within these states, rural residents regularly burn crop residue to prepare for next season, producing toxic smog that becomes contained over the city as cooler air descends.

Medical and Economic Impact

Public health and economic consequences on the nearly 33 million residents residing in the Delhi area is significant, according to multiple investigations.

These hazardous conditions results in high levels of nervous system, cardiovascular and respiratory conditions, and can result in oncological diseases.

Air quality crisis is estimated to be accounting for 10,000 premature fatalities each year in the capital.