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On Tuesday morning residents of the world's most polluted city found themselves inhaling dangerously toxic air that was classified as the "severe" category.

Alarming Pollution Readings

Multiple areas of Delhi registered an air quality index over 500, which equals ten times the recommended level recommended by the World Health Organization.

In some locations, concentrations of dangerous airborne particles soared to of eighteen hundred, representing 15-20x exceeding safe limits.

Firecracker Restrictions and Current Policy Shifts

Since 2020, the government had maintained a comprehensive restriction on the distribution and bursting of pyrotechnics during the Festival of Lights due to their substantial impact to the dangerous haze that blankets the metropolis as the cold season begins.

Yet earlier this year, the newly elected local government approached the supreme court to propose a relaxation of the restrictions.

Officials advocated for allowing "eco-friendly fireworks" – previously doubted by environmentalists as being only about 30% reduced emissions – as a balance between "heritage and ecological concerns".

Legal Decision and Implementation

Much to the frustration of environmental and health advocates, the court agreed to the appeal, specifying that green firecrackers could be ignited during limited time windows throughout the Diwali.

During the celebrations, there was considerable flouting of the regulated periods across the metropolis, with little enforcement regarding whether the fireworks being used were actually the more environmentally friendly variety.

Many recording stations throughout the capital showed air quality reaching highest levels around late evening to extremely hazardous measurements observed during the festival in at least recent memory.

International Implications

The widespread use of fireworks during Diwali also initiated a blame game with neighbouring the neighboring country, with officials in Pakistan's Punjab province partially attributing worsening atmospheric conditions in the city of Lahore on pollutants coming from neighboring India following the festivities.

Long-Standing Pollution Crisis

Alarmingly severe levels of air contamination in the capital have continued as a significant problem for fifteen-plus years, with the problem gradually deteriorating.

During Diwali, the concentration of toxic particulate matter in the air has been found to shoot up to seventy percent above the peak levels ever documented in China's capital, which was formerly viewed as the world's most polluted metropolis.

Various Pollution Factors

The situation in the capital is caused by a convergence of different contributors including transportation pollution, airborne particles, construction activities, rubbish burning and haze from agricultural fires in neighbouring states of Punjab and Haryana.

Throughout these areas, farmers routinely ignite agricultural waste to prepare for next season, generating hazardous smog that remains stagnant over the capital as cooler air descends.

Public Health and Financial Toll

Both financial and medical consequences on the nearly 33 million people living in the metropolitan zone is enormous, according to numerous investigations.

These hazardous conditions leads to increased incidence of nervous system, cardiovascular and lung diseases, and can potentially cause oncological diseases.

The pollution is calculated to be causing 10,000 early fatalities each year in Delhi.