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On Tuesday morning inhabitants of the world's most polluted city encountered breathing severely hazardous air that was classified as the "severe" category.

Record-Breaking Air Quality Measurements

Various sections of the city showed an pollution measurement exceeding 500, which equals a tenfold increase over the healthy threshold set by the global health authority.

In some locations, concentrations of toxic particulate matter reached peaks of eighteen hundred, representing 15-20x exceeding acceptable limits.

Firecracker Prohibition and New Policy Shifts

For the past four years, authorities had implemented a total prohibition on the distribution and bursting of pyrotechnics during Diwali due to their significant contribution to the dangerous smog that blankets the city as the cold season approaches.

However earlier this year, the recently formed local leadership appealed to the supreme court to request a easing of the restrictions.

Officials advocated for allowing "environmentally conscious pyrotechnics" – which have been criticized by environmentalists as being only about 30% lower impact – as a balance between "tradition and ecological concerns".

Legal Decision and Implementation

Despite concerns of medical and ecological campaigners, judges approved the request, stipulating that green firecrackers could be ignited during designated hours throughout the festival.

During the celebrations, there was extensive disregard of the time restrictions across the metropolis, with minimal regulation regarding whether the pyrotechnics being used were actually the eco-friendly type.

Several monitoring devices throughout Delhi registered air quality reaching highest levels around the night hours to the most severe measurements seen during celebrations in at least three years.

Regional Effects

The widespread use of firecrackers during the celebrations also triggered a dispute with neighbouring the neighboring country, with authorities in Pakistan's Punjab province partly blaming declining pollution levels in their urban centers on contaminants coming from neighboring India following the events.

Chronic Environmental Issue

The dangerously high concentrations of pollution in Delhi have remained as a significant problem for fifteen-plus years, with the condition showing no improvement.

During the festival period, the concentration of hazardous airborne contaminants in the environment has been observed to increase dramatically to 70% higher the most severe records ever recorded in China's capital, which was formerly regarded as the world's most polluted city.

Diverse Pollution Factors

The situation in the capital is attributed to a combination of various sources including automobile exhaust, construction debris, development work, rubbish burning and smoke from farm burning in nearby regions of neighboring agricultural zones.

Throughout these areas, agricultural workers illegally ignite agricultural waste to clear them quickly, producing toxic haze that then gets trapped over the capital as colder air sets in.

Health and Economic Consequences

Public health and economic impact on the approximately 33 million residents living in the capital region is substantial, according to various studies.

The contaminated air results in elevated rates of nervous system, cardiovascular and lung disorders, and can even lead to cancer.

Environmental contamination is calculated to be responsible for approximately 10k premature deaths annually in the capital.