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As Tuesday dawned inhabitants of the planet's dirtiest urban center encountered inhaling dangerously toxic air that registered in the "severe" category.

Record-Breaking Air Quality Measurements

Multiple areas of the city showed an AQI over 500, which translates to a tenfold increase over the safe limit recommended by the global health authority.

Certain monitoring stations, readings of PM2.5 and PM10 reached peaks of 1,800, amounting to fifteen to twenty times exceeding acceptable limits.

Fireworks Ban and Current Policy Shifts

Beginning in 2020, authorities had enforced a complete ban on the sale and use of fireworks during the Festival of Lights due to their major role to the hazardous pollution that engulfs the city as winter begins.

However in recent months, the recently formed local government petitioned the highest court to request a modification of the restrictions.

The suggestion was allowing "environmentally conscious pyrotechnics" – historically criticized by environmentalists as being only about 30% less polluting – as a compromise between "cultural practices and ecological concerns".

Legal Verdict and Enforcement

Despite concerns of public health and environmental campaigners, the court approved the request, mandating that green firecrackers could be set off during limited hours throughout the celebrations.

On Monday night, there was widespread flouting of the designated hours across the capital, with insufficient regulation regarding whether the fireworks being used were actually the supposedly greener type.

Numerous monitoring devices throughout the city recorded pollution spiking around late evening to the most severe measurements recorded during the festival in at least the past three years.

Cross-Border Implications

The widespread use of pyrotechnics during the celebrations also initiated a blame game with adjacent the neighboring country, with authorities in Pakistan's Punjab province partly blaming declining pollution levels in Lahore on contaminants originating in India following the celebrations.

Long-Standing Environmental Issue

Extremely elevated readings of air contamination in the city have continued as a major problem for more than 15 years, with the problem showing no improvement.

Around Diwali, the amount of hazardous particles in the environment has been found to increase dramatically to 70% higher the peak levels ever measured in Beijing, which was once viewed as the planet's dirtiest urban center.

Various Pollution Contributors

This crisis in the capital is resulting from a combination of multiple factors including heavy vehicle emissions, airborne particles, construction activities, garbage fires and haze from agricultural fires in adjacent regions of Punjab and Haryana.

Throughout these areas, farmers illegally ignite agricultural waste to expedite field preparation, generating dangerous smog that then gets trapped over the capital as winter air arrives.

Medical and Financial Toll

Public health and economic toll on the approximately 33 million people calling home the capital region is substantial, according to numerous research.

The contaminated air results in high levels of nervous system, cardiovascular and lung conditions, and can even lead to malignancies.

Air quality crisis is calculated to be accounting for ten thousand early mortalities annually in the capital.