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Tuesday brought residents of the planet's dirtiest urban center were faced with exposed to extremely polluted air that registered in the "alarming" range.

Extremely High Air Quality Levels

Multiple areas of the capital recorded an AQI above 500, which translates to ten times the safe threshold set by the WHO.

In some locations, readings of toxic particulate matter hit highs of 1,800, representing 15-20x above healthy levels.

Firecracker Restrictions and New Changes

Beginning in 2020, the government had enforced a total prohibition on the distribution and bursting of fireworks during Diwali due to their significant contribution to the deadly smog that blankets the city as the cold season begins.

However recently, the newly elected city leadership appealed to the highest court to request a easing of the restrictions.

They proposed allowing "green crackers" – previously doubted by environmental experts as being only roughly 30 percent less polluting – as a compromise between "tradition and ecological concerns".

Judicial Decision and Implementation

Despite concerns of environmental and health campaigners, judicial authorities agreed to the appeal, specifying that eco-friendly pyrotechnics could be used during specific periods throughout the celebrations.

On Monday night, there was widespread disregard of the regulated periods across the city, with little enforcement regarding whether the fireworks being used were actually the supposedly greener version.

Many monitoring devices throughout Delhi registered air quality spiking around midnight to the most severe readings recorded during Diwali in at least the past three years.

International Consequences

The proliferation of firecrackers during the festival also sparked a controversy with bordering Pakistan, with authorities in Pakistan's Punjab partly blaming worsening atmospheric conditions in their urban centers on pollutants coming from across the border following the events.

Persistent Pollution Problem

Alarmingly severe levels of pollution in the capital have remained as a major challenge for over a decade and a half, with the situation continuing to worsen.

Near Diwali, the concentration of hazardous particulate matter in the air has been documented to shoot up to 70% higher the worst levels ever recorded in China's capital, which was once considered as the world's most polluted urban center.

Various Contamination Factors

This crisis in the capital is resulting from a combination of different contributors including automobile exhaust, construction debris, building projects, garbage fires and haze from farm burning in nearby areas of neighboring agricultural zones.

Within these states, rural residents regularly ignite agricultural waste to expedite field preparation, producing hazardous haze that becomes contained over the capital as winter air descends.

Health and Financial Toll

Public health and economic impact on the roughly thirty-three million residents living in the Delhi area is significant, according to multiple research.

This pollution leads to elevated rates of neurological, heart and circulatory and respiratory conditions, and can even lead to cancer.

Environmental contamination is projected to be accounting for ten thousand early fatalities per year in the capital.