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As Tuesday dawned inhabitants of the world's most polluted city encountered inhaling extremely polluted air that registered in the "severe" category.

Alarming Pollution Levels

Several parts of Delhi showed an air quality index above 500, which translates to a tenfold increase over the recommended threshold established by the global health authority.

Particular areas, levels of toxic particulate matter hit highs of 1800, amounting to 15 to 20 times exceeding healthy standards.

Pyrotechnics Restrictions and Recent Developments

Beginning in 2020, officials had implemented a complete ban on the sale and use of fireworks during Diwali due to their significant contribution to the hazardous pollution that engulfs the capital as the cold season begins.

However earlier this year, the recently formed local government approached the judicial authority to seek a modification of the ban.

The suggestion was allowing "environmentally conscious pyrotechnics" – historically questioned by environmental experts as being only roughly 30 percent reduced emissions – as a middle ground between "cultural practices and ecological concerns".

Court Decision and Implementation

Much to the frustration of public health and environmental campaigners, judicial authorities agreed to the appeal, specifying that environmentally conscious fireworks could be ignited during limited time windows throughout the Diwali.

Throughout the festival evening, there was extensive disregard of the designated hours across the city, with insufficient regulation regarding whether the firecrackers being used were actually the more environmentally friendly variety.

Numerous recording stations throughout the city recorded air quality reaching highest levels around midnight to extremely hazardous readings seen during the festival in at least the past three years.

Regional Implications

The proliferation of firecrackers during the celebrations also sparked a controversy with neighbouring Pakistan, with authorities in Pakistani Punjab pointing to worsening pollution levels in Lahore on contaminants originating in neighboring India following the festivities.

Chronic Pollution Problem

The dangerously high readings of atmospheric toxins in the capital have persisted as a serious problem for more than 15 years, with the condition showing no improvement.

During celebratory seasons, the amount of toxic particles in the air has been documented to spike to seventy percent above the most severe levels ever measured in China's capital, which was formerly considered as the globally most contaminated metropolis.

Various Pollution Sources

The problem in the capital is attributed to a combination of different contributors including heavy vehicle emissions, airborne particles, building projects, garbage fires and haze from agricultural fires in nearby states of Punjab and Haryana.

Within these states, agricultural workers regularly burn crop residue to expedite field preparation, producing toxic smog that becomes contained over the capital as colder air descends.

Public Health and Financial Consequences

Public health and economic toll on the nearly 33 million residents calling home the capital region is enormous, according to multiple investigations.

These hazardous conditions causes elevated rates of neurological, cardiovascular and breathing disorders, and can result in malignancies.

The pollution is estimated to be causing 10,000 early deaths each year in the city.