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On Tuesday morning citizens of the world's most polluted city encountered breathing dangerously toxic air that was classified as the "alarming" category.

Record-Breaking Pollution Levels

Several parts of the capital registered an AQI exceeding 500, which translates to a tenfold increase over the healthy limit established by the World Health Organization.

Particular areas, concentrations of PM2.5 and PM10 soared to of eighteen hundred, amounting to 15-20x above acceptable limits.

Pyrotechnics Restrictions and Recent Changes

Since 2020, officials had enforced a total prohibition on the purchase and ignition of fireworks during the Festival of Lights due to their substantial impact to the dangerous haze that covers the capital as winter sets in.

Yet earlier this year, the newly elected local administration appealed to the supreme court to request a modification of the restrictions.

They proposed allowing "eco-friendly fireworks" – which have been criticized by environmentalists as being only roughly 30 percent lower impact – as a middle ground between "heritage and ecological concerns".

Judicial Ruling and Reality

Despite concerns of medical and ecological advocates, judicial authorities approved the request, stipulating that environmentally conscious fireworks could be ignited during specific periods throughout the celebrations.

Throughout the festival evening, there was widespread disregard of the designated hours across the city, with minimal enforcement regarding whether the fireworks being used were actually the supposedly greener variety.

Several air quality sensors throughout Delhi registered pollution spiking around late evening to some of the worst levels seen during Diwali in at least recent memory.

International Effects

The widespread use of pyrotechnics during Diwali also initiated a controversy with neighbouring Pakistan, with officials in Pakistan's Punjab province pointing to worsening atmospheric conditions in the city of Lahore on contaminants originating in India following the festivities.

Persistent Environmental Problem

The dangerously high levels of pollution in Delhi have continued as a serious issue for over a decade and a half, with the condition continuing to worsen.

Near the festival period, the amount of dangerous airborne contaminants in the atmosphere has been documented to spike to significantly exceeding the peak records ever documented in Beijing, which was once considered as the world's most polluted urban center.

Various Pollution Contributors

The situation in the city is resulting from a convergence of various sources including automobile exhaust, construction debris, construction activities, waste incineration and pollutants from crop residue ignition in neighbouring regions of farming communities.

Throughout these areas, rural residents regularly burn crop residue to expedite field preparation, creating hazardous pollution that then gets trapped over the metropolitan area as winter air sets in.

Medical and Economic Impact

Public health and economic toll on the roughly thirty-three million people residing in the capital region is substantial, according to numerous research.

These hazardous conditions results in high levels of neurological, cardiovascular and lung diseases, and can result in cancer.

Air quality crisis is projected to be causing ten thousand early mortalities each year in the city.