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On Tuesday morning residents of this heavily contaminated metropolis encountered exposed to severely hazardous air that registered in the "alarming" category.

Extremely High Air Quality Measurements

Multiple areas of the city registered an air quality index exceeding 500, which equals a tenfold increase over the healthy threshold established by the global health authority.

Particular areas, levels of dangerous airborne particles hit highs of eighteen hundred, amounting to 15 to 20 times exceeding safe standards.

Fireworks Restrictions and Current Policy Shifts

Since 2020, officials had maintained a complete ban on the purchase and ignition of fireworks during Diwali due to their significant contribution to the deadly pollution that engulfs the capital as the cold season begins.

Yet earlier this year, the current regional government approached the supreme court to request a easing of the restrictions.

The suggestion was allowing "environmentally conscious pyrotechnics" – historically criticized by conservation groups as being only about 30% lower impact – as a middle ground between "heritage and environment".

Court Verdict and Implementation

Despite concerns of medical and ecological campaigners, judges agreed to the request, mandating that green firecrackers could be used during designated periods throughout the Diwali.

During the celebrations, there was extensive disregard of the regulated periods across the metropolis, with minimal regulation regarding whether the firecrackers being used were actually the more environmentally friendly type.

Numerous air quality sensors throughout the city registered contamination reaching highest levels around midnight to some of the worst measurements seen during celebrations in at least recent memory.

Cross-Border Implications

Extensive ignition of fireworks during the festival also triggered a blame game with adjacent Pakistan, with representatives in Pakistan's Punjab partly blaming declining air quality in their urban centers on hazardous particles originating in neighboring India following the celebrations.

Persistent Environmental Crisis

Extremely elevated readings of pollution in the city have remained as a serious problem for fifteen-plus years, with the problem showing no improvement.

Around Diwali, the concentration of dangerous airborne contaminants in the air has been documented to shoot up to seventy percent above the peak records ever measured in Beijing, which was formerly viewed as the world's most polluted metropolis.

Various Contamination Factors

This crisis in the capital is caused by a mix of multiple factors including transportation pollution, dust, construction activities, rubbish burning and pollutants from crop residue ignition in neighbouring regions of farming communities.

Throughout these areas, farmers illegally set their fields on fire to clear them quickly, creating hazardous pollution that remains stagnant over the capital as cooler air sets in.

Medical and Economic Impact

The economic and health impact on the nearly 33 million inhabitants residing in the capital region is substantial, according to multiple studies.

The contaminated air causes increased incidence of nervous system, cardiovascular and lung conditions, and can potentially cause cancer.

The pollution is calculated to be responsible for approximately 10k early mortalities each year in Delhi.