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As Tuesday dawned inhabitants of this heavily contaminated metropolis encountered breathing severely hazardous air that registered in the "critical" category.

Record-Breaking Pollution Measurements

Multiple areas of the city showed an air quality index over 500, which translates to ten times the healthy limit established by the World Health Organization.

In some locations, levels of dangerous airborne particles reached peaks of 1,800, representing 15 to 20 times higher than acceptable levels.

Pyrotechnics Prohibition and Recent Developments

Beginning in 2020, the government had enforced a complete ban on the sale and use of firecrackers during the Festival of Lights due to their substantial impact to the deadly haze that engulfs the metropolis as the cold season sets in.

Nevertheless in recent months, the recently formed local leadership approached the supreme court to request a easing of the prohibition.

The suggestion was allowing "green crackers" – which have been doubted by environmentalists as being only about 30% reduced emissions – as a balance between "heritage and environment".

Judicial Decision and Implementation

Despite concerns of medical and ecological campaigners, judicial authorities complied with the appeal, specifying that eco-friendly pyrotechnics could be ignited during designated periods throughout the celebrations.

Throughout the festival evening, there was widespread disregard of the designated hours across the capital, with minimal regulation regarding whether the pyrotechnics being used were actually the eco-friendly version.

Numerous air quality sensors throughout the capital registered contamination peaking around the night hours to the most severe measurements seen during Diwali in at least three years.

Cross-Border Implications

The widespread use of firecrackers during Diwali also initiated a controversy with neighbouring the neighboring country, with officials in Pakistani the Punjab region partly blaming worsening atmospheric conditions in their urban centers on pollutants coming from across the border following the festivities.

Long-Standing Environmental Issue

Extremely elevated readings of air contamination in the capital have remained as a significant challenge for fifteen-plus years, with the situation gradually deteriorating.

Near celebratory seasons, the concentration of dangerous airborne contaminants in the atmosphere has been documented to spike to 70% higher the peak records ever measured in China's capital, which was formerly regarded as the world's most polluted metropolis.

Various Pollution Sources

The problem in the capital is attributed to a convergence of various sources including heavy vehicle emissions, airborne particles, construction activities, rubbish burning and haze from farm burning in nearby areas of Punjab and Haryana.

Within these states, farmers illegally burn crop residue to expedite field preparation, producing dangerous smog that then gets trapped over the metropolitan area as colder air arrives.

Public Health and Economic Impact

Both financial and medical toll on the nearly 33 million inhabitants residing in the metropolitan zone is substantial, according to numerous research.

This pollution results in elevated rates of neurological, heart and circulatory and breathing disorders, and can even lead to cancer.

Environmental contamination is estimated to be causing ten thousand premature fatalities annually in the city.