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As Tuesday dawned inhabitants of this heavily contaminated metropolis were faced with exposed to extremely polluted air that fell into the "severe" category.

Alarming Air Quality Levels

Various sections of the capital registered an air quality index exceeding 500, which represents a tenfold increase over the safe level set by the global health authority.

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

Pyrotechnics Ban and New Developments

Beginning in 2020, authorities had enforced a comprehensive restriction on the sale and use of firecrackers during the Festival of Lights due to their substantial impact to the hazardous pollution that covers the city as the cold season begins.

Yet earlier this year, the recently formed local administration approached the supreme court to propose a easing of the ban.

Officials advocated for allowing "green crackers" – previously criticized by environmental experts as being only approximately one-third lower impact – as a balance between "heritage and public health".

Legal Ruling and Enforcement

Despite concerns of medical and ecological advocates, judges complied with the request, specifying that green firecrackers could be ignited during designated hours throughout the Diwali.

During the celebrations, there was considerable violation of the designated hours across the metropolis, with insufficient regulation regarding whether the pyrotechnics being used were actually the eco-friendly type.

Several air quality sensors throughout the city recorded pollution reaching highest levels around the night hours to some of the worst measurements seen during celebrations in at least the past three years.

International Consequences

The proliferation of fireworks during Diwali also triggered a dispute with neighbouring Pakistan, with authorities in Pakistan's Punjab province partially attributing worsening pollution levels in the city of Lahore on contaminants originating in across the border following the celebrations.

Persistent Environmental Problem

Extremely elevated concentrations of air contamination in the capital have remained as a significant issue for more than 15 years, with the problem continuing to worsen.

During the festival period, the levels of toxic airborne contaminants in the atmosphere has been observed to shoot up to 70% higher the peak records ever measured in China's capital, which was formerly viewed as the world's most polluted metropolis.

Multiple Contamination Factors

The problem in the city is resulting from a mix of multiple factors including heavy vehicle emissions, airborne particles, development work, waste incineration and pollutants from farm burning in adjacent states of neighboring agricultural zones.

Throughout these areas, rural residents regularly burn crop residue to prepare for next season, producing hazardous smog that remains stagnant over the city as winter air arrives.

Medical and Financial Impact

The economic and health toll on the roughly thirty-three million inhabitants calling home the metropolitan zone is significant, according to numerous investigations.

These hazardous conditions leads to high levels of nervous system, heart and circulatory and lung diseases, and can even lead to oncological diseases.

Environmental contamination is estimated to be accounting for 10,000 early deaths annually in the capital.