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On Tuesday morning inhabitants of the planet's dirtiest urban center were faced with breathing extremely polluted air that fell into the "critical" level.

Extremely High Pollution Levels

Several parts of the capital showed an AQI above 500, which equals ten times the healthy threshold recommended by the global health authority.

Certain monitoring stations, readings of PM2.5 and PM10 reached peaks of 1800, amounting to fifteen to twenty times higher than healthy standards.

Firecracker Ban and New Policy Shifts

Beginning in 2020, the government had maintained a total prohibition on the sale and use of firecrackers during celebrations due to their significant contribution to the hazardous pollution that covers the capital as colder weather approaches.

Nevertheless earlier this year, the current city leadership petitioned the judicial authority to propose a easing of the restrictions.

They proposed allowing "environmentally conscious pyrotechnics" – previously doubted by conservation groups as being only approximately one-third less polluting – as a middle ground between "heritage and ecological concerns".

Court Decision and Reality

Despite concerns of public health and environmental advocates, the court complied with the request, specifying that eco-friendly pyrotechnics could be ignited during specific hours throughout the festival.

On Monday night, there was considerable disregard of the time restrictions across the capital, with insufficient enforcement regarding whether the pyrotechnics being used were actually the eco-friendly version.

Numerous air quality sensors throughout the city showed pollution reaching highest levels around late evening to some of the worst readings observed during Diwali in at least the past three years.

Regional Implications

The widespread use of pyrotechnics during Diwali also sparked a blame game with neighbouring Pakistan, with authorities in Pakistani Punjab province partially attributing worsening pollution levels in their urban centers on pollutants coming from neighboring India following the festivities.

Chronic Pollution Crisis

Extremely elevated concentrations of pollution in the city have remained as a significant challenge for fifteen-plus years, with the problem gradually deteriorating.

Around celebratory seasons, the concentration of hazardous airborne contaminants in the environment has been found to increase dramatically to seventy percent above the worst records ever recorded in China's capital, which was once considered as the planet's dirtiest metropolis.

Diverse Contamination Sources

This crisis in the city is resulting from a combination of multiple factors including automobile exhaust, dust, development work, rubbish burning and smoke from agricultural fires in neighbouring states of farming communities.

In these regions, rural residents illegally burn crop residue to expedite field preparation, creating dangerous pollution that becomes contained over the city as cooler air descends.

Health and Economic Consequences

Public health and economic impact on the roughly thirty-three million people calling home the Delhi area is significant, according to various studies.

This pollution results in increased incidence of nervous system, cardiovascular and lung disorders, and can even lead to malignancies.

Air quality crisis is calculated to be causing 10,000 untimely mortalities each year in the capital.