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As Tuesday dawned inhabitants of the world's most polluted city were faced with inhaling extremely polluted air that registered in the "severe" level.

Extremely High Pollution Readings

Various sections of the capital showed an pollution measurement exceeding 500, which represents a tenfold increase over the healthy threshold set by the World Health Organization.

Particular areas, levels of PM2.5 and PM10 hit highs of 1,800, amounting to 15 to 20 times higher than safe limits.

Fireworks Restrictions and Current Policy Shifts

Beginning in 2020, officials had maintained a comprehensive restriction on the purchase and ignition of pyrotechnics during celebrations due to their significant contribution to the hazardous pollution that engulfs the capital as the cold season sets in.

However recently, the newly elected regional government approached the supreme court to propose a relaxation of the prohibition.

The suggestion was allowing "eco-friendly fireworks" – previously criticized by environmentalists as being only approximately one-third less polluting – as a middle ground between "cultural practices and ecological concerns".

Court Ruling and Reality

Much to the frustration of public health and environmental activists, the court complied with the appeal, stipulating that green firecrackers could be ignited during specific time windows throughout the Diwali.

On Monday night, there was considerable flouting of the designated hours across the capital, with minimal enforcement regarding whether the firecrackers being used were actually the more environmentally friendly type.

Many air quality sensors throughout Delhi registered contamination spiking around late evening to extremely hazardous readings observed during Diwali in at least recent memory.

Cross-Border Implications

The widespread use of pyrotechnics during Diwali also initiated a controversy with adjacent Pakistan, with representatives in Pakistan's the Punjab region partly blaming worsening pollution levels in the city of Lahore on hazardous particles coming from India following the events.

Chronic Pollution Crisis

The dangerously high levels of pollution in the capital have continued as a significant problem for more than 15 years, with the problem gradually deteriorating.

Around Diwali, the concentration of toxic particulate matter in the environment has been found to increase dramatically to 70% higher the peak readings ever documented in China's capital, which was previously regarded as the globally most contaminated city.

Diverse Contamination Factors

The situation in the capital is resulting from a combination of multiple factors including automobile exhaust, airborne particles, construction activities, waste incineration and haze from farm burning in adjacent regions of neighboring agricultural zones.

Throughout these areas, agricultural workers illegally burn crop residue to prepare for next season, producing hazardous haze that becomes contained over the metropolitan area as cooler air arrives.

Public Health and Economic Impact

Both financial and medical toll on the roughly thirty-three million residents calling home the metropolitan zone is substantial, according to numerous studies.

These hazardous conditions results in high levels of neurological, heart and circulatory and respiratory conditions, and can result in cancer.

Environmental contamination is estimated to be accounting for ten thousand premature fatalities annually in Delhi.