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On Tuesday morning residents of the planet's dirtiest urban center encountered inhaling extremely polluted air that fell into the "alarming" level.

Record-Breaking Pollution Measurements

Multiple areas of Delhi registered an air quality index exceeding 500, which equals 10x the safe level established by the global health authority.

In some locations, concentrations of PM2.5 and PM10 hit highs of 1,800, amounting to fifteen to twenty times higher than acceptable levels.

Pyrotechnics Ban and Recent Policy Shifts

Since 2020, the government had implemented a total prohibition on the sale and use of pyrotechnics during the Festival of Lights due to their substantial impact to the hazardous smog that blankets the metropolis as colder weather begins.

However earlier this year, the recently formed city government approached the judicial authority to propose a easing of the ban.

The suggestion was allowing "green crackers" – previously doubted by environmental experts as being only roughly 30 percent less polluting – as a balance between "heritage and public health".

Legal Ruling and Reality

Despite concerns of medical and ecological activists, judges approved the proposal, mandating that green firecrackers could be set off during limited periods throughout the Diwali.

On Monday night, there was extensive violation of the time restrictions across the city, with little enforcement regarding whether the firecrackers being used were actually the more environmentally friendly variety.

Numerous monitoring devices throughout Delhi registered contamination spiking around late evening to extremely hazardous measurements observed during celebrations in at least three years.

International Consequences

The proliferation of pyrotechnics during Diwali also sparked a blame game with adjacent Pakistan, with officials in Pakistani Punjab province partially attributing declining air quality in their urban centers on contaminants traveling from India following the festivities.

Long-Standing Environmental Crisis

Extremely elevated readings of atmospheric toxins in Delhi have continued as a serious issue for more than 15 years, with the situation continuing to worsen.

During the festival period, the concentration of toxic airborne contaminants in the air has been observed to shoot up to significantly exceeding the peak records ever documented in China's capital, which was formerly regarded as the world's most polluted metropolis.

Various Pollution Contributors

The situation in Delhi is attributed to a mix of multiple factors including automobile exhaust, airborne particles, development work, garbage fires and haze from crop residue ignition in adjacent regions of neighboring agricultural zones.

In these regions, rural residents illegally burn crop residue to clear them quickly, producing toxic pollution that remains stagnant over the capital as colder air sets in.

Medical and Economic Toll

Public health and economic impact on the nearly 33 million residents residing in the metropolitan zone is substantial, according to numerous studies.

This pollution causes increased incidence of neurological, heart and circulatory and breathing disorders, and can even lead to malignancies.

The pollution is calculated to be responsible for approximately 10k premature fatalities annually in Delhi.