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On Tuesday morning residents of the planet's dirtiest urban center found themselves inhaling extremely polluted air that was classified as the "alarming" range.

Extremely High Air Quality Readings

Multiple areas of the city showed an pollution measurement exceeding 500, which equals ten times the recommended level established by the WHO.

Particular areas, levels of dangerous airborne particles hit highs of 1,800, representing 15 to 20 times above acceptable levels.

Firecracker Ban and New Developments

For the past four years, officials had enforced a comprehensive restriction on the purchase and ignition of pyrotechnics during celebrations due to their substantial impact to the hazardous pollution that engulfs the capital as the cold season approaches.

Yet recently, the newly elected regional administration appealed to the judicial authority to propose a modification of the prohibition.

They proposed allowing "eco-friendly fireworks" – previously doubted by environmentalists as being only about 30% less polluting – as a balance between "heritage and public health".

Legal Verdict and Enforcement

Despite concerns of medical and ecological activists, judicial authorities approved the appeal, specifying that green firecrackers could be set off during limited periods throughout the celebrations.

Throughout the festival evening, there was extensive flouting of the designated hours across the capital, with little regulation regarding whether the fireworks being used were actually the supposedly greener variety.

Several recording stations throughout the capital showed pollution reaching highest levels around the night hours to some of the worst levels observed during Diwali in at least the past three years.

International Effects

Extensive ignition of fireworks during the festival also initiated a controversy with bordering the neighboring country, with officials in Pakistani Punjab pointing to worsening atmospheric conditions in the city of Lahore on hazardous particles originating in India following the festivities.

Long-Standing Environmental Problem

Alarmingly severe readings of air contamination in the capital have remained as a serious problem for more than 15 years, with the condition gradually deteriorating.

Around the festival period, the levels of dangerous particles in the environment has been observed to increase dramatically to seventy percent above the peak records ever recorded in the Chinese city, which was previously regarded as the world's most polluted urban center.

Multiple Contamination Contributors

The situation in the capital is attributed to a combination of multiple factors including automobile exhaust, dust, construction activities, waste incineration and smoke from farm burning in neighbouring regions of Punjab and Haryana.

Within these states, rural residents routinely ignite agricultural waste to expedite field preparation, creating dangerous haze that then gets trapped over the capital as cooler air descends.

Medical and Financial Toll

The economic and health impact on the roughly thirty-three million people residing in the Delhi area is substantial, according to numerous investigations.

The contaminated air results in elevated rates of neurological, heart and circulatory and breathing disorders, and can potentially cause oncological diseases.

Air quality crisis is calculated to be causing approximately 10k untimely fatalities per year in the city.