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On Tuesday morning inhabitants of this heavily contaminated metropolis found themselves breathing extremely polluted air that registered in the "alarming" category.

Extremely High Pollution Levels

Several parts of the capital registered an AQI over 500, which translates to 10x the healthy level established by the World Health Organization.

In some locations, readings of PM2.5 and PM10 soared to of eighteen hundred, representing 15 to 20 times exceeding healthy standards.

Pyrotechnics Ban and New Policy Shifts

Beginning in 2020, officials had maintained a complete ban on the distribution and bursting of fireworks during the Festival of Lights due to their significant contribution to the hazardous haze that engulfs the metropolis as winter approaches.

Yet in recent months, the newly elected city leadership approached the judicial authority to request a easing of the prohibition.

Officials advocated for allowing "eco-friendly fireworks" – previously criticized by conservation groups as being only roughly 30 percent reduced emissions – as a compromise between "tradition and ecological concerns".

Legal Verdict and Enforcement

Much to the frustration of public health and environmental advocates, judicial authorities approved the appeal, mandating that green firecrackers could be ignited during limited periods throughout the celebrations.

On Monday night, there was considerable disregard of the designated hours across the city, with insufficient regulation regarding whether the pyrotechnics being used were actually the supposedly greener variety.

Many recording stations throughout the city recorded pollution reaching highest levels around the night hours to extremely hazardous levels observed during celebrations in at least the past three years.

International Implications

The proliferation of fireworks during Diwali also triggered a controversy with neighbouring Pakistan, with authorities in Pakistan's Punjab partly blaming deteriorating pollution levels in the city of Lahore on hazardous particles originating in neighboring India following the events.

Chronic Environmental Issue

Extremely elevated concentrations of pollution in the capital have persisted as a serious issue for over a decade and a half, with the condition showing no improvement.

Around the festival period, the amount of toxic particles in the atmosphere has been documented to spike to seventy percent above the peak readings ever documented in China's capital, which was formerly regarded as the planet's dirtiest urban center.

Diverse Pollution Sources

This crisis in the city is resulting from a mix of various sources including transportation pollution, construction debris, construction activities, waste incineration and smoke from agricultural fires in nearby areas of neighboring agricultural zones.

Within these states, agricultural workers regularly set their fields on fire to expedite field preparation, generating toxic haze that becomes contained over the metropolitan area as colder air arrives.

Medical and Economic Consequences

The economic and health impact on the roughly thirty-three million residents living in the capital region is substantial, according to multiple investigations.

These hazardous conditions causes elevated rates of nervous system, cardiovascular and lung diseases, and can potentially cause malignancies.

The pollution is projected to be causing approximately 10k untimely deaths each year in Delhi.