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On Tuesday morning inhabitants of the planet's dirtiest urban center found themselves breathing severely hazardous air that was classified as the "critical" level.

Alarming Air Quality Readings

Various sections of the capital recorded an air quality index exceeding 500, which represents 10x the healthy level recommended by the WHO.

Particular areas, levels of dangerous airborne particles reached peaks of 1,800, equating to 15-20x higher than healthy levels.

Firecracker Restrictions and Current Developments

Since 2020, the government had implemented a complete ban on the purchase and ignition of pyrotechnics during celebrations due to their significant contribution to the hazardous haze that engulfs the city as colder weather sets in.

However in recent months, the current local leadership petitioned the supreme court to request a relaxation of the ban.

They proposed allowing "environmentally conscious pyrotechnics" – which have been questioned by environmental experts as being only about 30% reduced emissions – as a middle ground between "cultural practices and ecological concerns".

Judicial Verdict and Enforcement

Much to the frustration of medical and ecological activists, judicial authorities complied with the appeal, specifying that green firecrackers could be ignited during limited hours throughout the festival.

Throughout the festival evening, there was considerable violation of the time restrictions across the capital, with insufficient monitoring regarding whether the fireworks being used were actually the supposedly greener version.

Numerous recording stations throughout the capital recorded air quality spiking around late evening to some of the worst readings recorded during the festival in at least three years.

International Effects

The proliferation of fireworks during the festival also initiated a dispute with adjacent Pakistan, with representatives in Pakistani Punjab partly blaming worsening air quality in the city of Lahore on hazardous particles coming from across the border following the festivities.

Long-Standing Pollution Problem

Extremely elevated concentrations of atmospheric toxins in the city have continued as a serious problem for fifteen-plus years, with the problem gradually deteriorating.

Near the festival period, the concentration of dangerous airborne contaminants in the environment has been observed to shoot up to seventy percent above the most severe records ever measured in China's capital, which was formerly viewed as the globally most contaminated city.

Diverse Pollution Contributors

The situation in Delhi is resulting from a mix of different contributors including transportation pollution, construction debris, development work, garbage fires and haze from farm burning in neighbouring states of Punjab and Haryana.

In these regions, rural residents routinely set their fields on fire to expedite field preparation, producing toxic haze that remains stagnant over the capital as cooler air arrives.

Health and Economic Consequences

Both financial and medical consequences on the nearly 33 million people living in the Delhi area is substantial, according to numerous studies.

This pollution leads to high levels of neurological, cardiovascular and respiratory disorders, and can even lead to malignancies.

Environmental contamination is estimated to be accounting for approximately 10k early mortalities annually in the city.