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On Tuesday morning citizens of this heavily contaminated metropolis found themselves exposed to extremely polluted air that registered in the "severe" range.

Extremely High Pollution Measurements

Multiple areas of Delhi showed an air quality index exceeding 500, which translates to a tenfold increase over the safe threshold recommended by the World Health Organization.

Certain monitoring stations, levels of toxic particulate matter reached peaks of eighteen hundred, representing 15-20x higher than healthy levels.

Fireworks Ban and Current Changes

Beginning in 2020, the government had enforced a total prohibition on the sale and use of firecrackers during the Festival of Lights due to their substantial impact to the dangerous haze that engulfs the metropolis as winter sets in.

However in recent months, the current regional government appealed to the highest court to propose a relaxation of the ban.

They proposed allowing "environmentally conscious pyrotechnics" – previously criticized by environmental experts as being only roughly 30 percent reduced emissions – as a middle ground between "heritage and public health".

Court Decision and Reality

Despite concerns of public health and environmental advocates, the court approved the proposal, stipulating that environmentally conscious fireworks could be used during designated time windows throughout the festival.

Throughout the festival evening, there was widespread disregard of the time restrictions across the metropolis, with insufficient enforcement regarding whether the pyrotechnics being used were actually the supposedly greener variety.

Numerous monitoring devices throughout Delhi showed air quality spiking around midnight to some of the worst readings observed during celebrations in at least three years.

International Consequences

Extensive ignition of fireworks during the festival also initiated a controversy with adjacent the neighboring country, with authorities in Pakistan's the Punjab region pointing to deteriorating atmospheric conditions in their urban centers on hazardous particles originating in India following the celebrations.

Chronic Pollution Issue

The dangerously high concentrations of pollution in the city have continued as a significant issue for more than 15 years, with the condition continuing to worsen.

Around the festival period, the amount of hazardous particulate matter in the environment has been documented to spike to 70% higher the most severe levels ever measured in Beijing, which was once regarded as the world's most polluted metropolis.

Diverse Pollution Sources

The situation in the city is resulting from a combination of different contributors including transportation pollution, construction debris, building projects, waste incineration and haze from farm burning in adjacent states of neighboring agricultural zones.

Within these states, agricultural workers regularly set their fields on fire to expedite field preparation, producing toxic smog that then gets trapped over the metropolitan area as winter air arrives.

Public Health and Economic Consequences

The economic and health consequences on the roughly thirty-three million people residing in the metropolitan zone is substantial, according to numerous research.

These hazardous conditions results in high levels of nervous system, heart and circulatory and lung diseases, and can result in oncological diseases.

The pollution is estimated to be causing ten thousand premature fatalities each year in Delhi.