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Tuesday brought residents of the planet's dirtiest urban center were faced with exposed to severely hazardous air that registered in the "severe" category.

Extremely High Pollution Readings

Multiple areas of the city registered an pollution measurement exceeding 500, which translates to a tenfold increase over the recommended limit set by the World Health Organization.

In some locations, readings of dangerous airborne particles hit highs of eighteen hundred, amounting to 15 to 20 times above acceptable levels.

Firecracker Prohibition and Recent Policy Shifts

Beginning in 2020, authorities had implemented a comprehensive restriction on the distribution and bursting of firecrackers during celebrations due to their significant contribution to the deadly smog that blankets the metropolis as the cold season sets in.

Yet recently, the current city administration appealed to the supreme court to propose a modification of the prohibition.

Officials advocated for allowing "environmentally conscious pyrotechnics" – previously questioned by conservation groups as being only about 30% reduced emissions – as a middle ground between "cultural practices and environment".

Judicial Ruling and Enforcement

Much to the frustration of public health and environmental campaigners, judges complied with the proposal, stipulating that environmentally conscious fireworks could be set off during specific hours throughout the festival.

On Monday night, there was extensive disregard of the designated hours across the metropolis, with minimal monitoring regarding whether the fireworks being used were actually the supposedly greener version.

Numerous air quality sensors throughout the city registered contamination reaching highest levels around the night hours to extremely hazardous readings seen during the festival in at least recent memory.

International Effects

Extensive ignition of firecrackers during the festival also sparked a blame game with adjacent the neighboring country, with authorities in Pakistan's the Punjab region partly blaming deteriorating pollution levels in the city of Lahore on contaminants traveling from neighboring India following the events.

Long-Standing Pollution Problem

Extremely elevated levels of air contamination in the capital have persisted as a major challenge for over a decade and a half, with the situation showing no improvement.

Near the festival period, the amount of toxic airborne contaminants in the atmosphere has been documented to spike to significantly exceeding the peak levels ever documented in China's capital, which was previously viewed as the world's most polluted city.

Multiple Pollution Contributors

The problem in the capital is caused by a mix of multiple factors including transportation pollution, construction debris, building projects, rubbish burning and pollutants from farm burning in neighbouring areas of farming communities.

Throughout these areas, farmers regularly set their fields on fire to clear them quickly, creating hazardous pollution that becomes contained over the capital as winter air arrives.

Public Health and Financial Impact

The economic and health toll on the approximately 33 million residents calling home the capital region is significant, according to multiple investigations.

This pollution results in elevated rates of neurological, cardiovascular and lung conditions, and can even lead to cancer.

Environmental contamination is projected to be accounting for ten thousand untimely fatalities per year in Delhi.