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Tuesday brought citizens of the planet's dirtiest urban center encountered inhaling severely hazardous air that fell into the "severe" level.

Record-Breaking Air Quality Levels

Multiple areas of Delhi showed an air quality index over 500, which represents ten times the safe limit established by the global health authority.

Particular areas, levels of dangerous airborne particles reached peaks of 1,800, amounting to 15-20x above healthy standards.

Fireworks Ban and Recent Policy Shifts

Beginning in 2020, the government had implemented a comprehensive restriction on the distribution and bursting of pyrotechnics during celebrations due to their significant contribution to the dangerous pollution that engulfs the city as the cold season begins.

Nevertheless in recent months, the newly elected local government appealed to the judicial authority to propose a easing of the prohibition.

They proposed allowing "environmentally conscious pyrotechnics" – previously criticized by environmental experts as being only roughly 30 percent lower impact – as a balance between "cultural practices and environment".

Legal Decision and Implementation

Despite concerns of public health and environmental campaigners, judges agreed to the proposal, specifying that green firecrackers could be used during designated hours throughout the celebrations.

On Monday night, there was widespread violation of the designated hours across the city, with insufficient regulation regarding whether the pyrotechnics being used were actually the more environmentally friendly type.

Many recording stations throughout the capital registered air quality reaching highest levels around midnight to extremely hazardous levels recorded during Diwali in at least the past three years.

Cross-Border Effects

Extensive ignition of pyrotechnics during the festival also initiated a blame game with neighbouring the neighboring country, with authorities in Pakistan's the Punjab region partly blaming worsening air quality in their urban centers on pollutants originating in across the border following the events.

Long-Standing Environmental Crisis

Alarmingly severe levels of pollution in the capital have persisted as a significant challenge for over a decade and a half, with the situation showing no improvement.

Near the festival period, the levels of hazardous particulate matter in the atmosphere has been documented to shoot up to significantly exceeding the peak records ever documented in China's capital, which was previously viewed as the planet's dirtiest metropolis.

Various Pollution Sources

This crisis in the city is caused by a combination of various sources including transportation pollution, airborne particles, building projects, rubbish burning and smoke from crop residue ignition in neighbouring areas of farming communities.

Throughout these areas, farmers routinely set their fields on fire to expedite field preparation, producing hazardous smog that becomes contained over the metropolitan area as colder air sets in.

Medical and Financial Impact

Both financial and medical consequences on the nearly 33 million residents residing in the Delhi area is enormous, according to various research.

The contaminated air leads to high levels of neurological, heart and circulatory and respiratory disorders, and can potentially cause malignancies.

Environmental contamination is projected to be responsible for ten thousand premature mortalities each year in Delhi.