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Tuesday brought residents of the planet's dirtiest urban center encountered exposed to severely hazardous air that fell into the "critical" category.

Extremely High Pollution Measurements

Various sections of the capital recorded an air quality index over 500, which equals 10x the recommended threshold recommended by the World Health Organization.

Particular areas, levels of PM2.5 and PM10 reached peaks of 1,800, equating to fifteen to twenty times exceeding safe limits.

Pyrotechnics Ban and Current Changes

Beginning in 2020, the government had implemented a comprehensive restriction on the purchase and ignition of firecrackers during the Festival of Lights due to their major role to the dangerous haze that engulfs the capital as the cold season begins.

Nevertheless in recent months, the current local administration appealed to the supreme court to request a modification of the restrictions.

They proposed allowing "green crackers" – previously doubted by environmental experts as being only roughly 30 percent reduced emissions – as a compromise between "heritage and public health".

Court Verdict and Enforcement

Despite concerns of public health and environmental campaigners, judicial authorities approved the request, specifying that environmentally conscious fireworks could be ignited during designated periods throughout the Diwali.

Throughout the festival evening, there was widespread flouting of the designated hours across the capital, with little enforcement regarding whether the fireworks being used were actually the more environmentally friendly version.

Numerous air quality sensors throughout the capital recorded pollution reaching highest levels around the night hours to extremely hazardous levels observed during the festival in at least the past three years.

Regional Effects

The proliferation of fireworks during Diwali also triggered a blame game with bordering the neighboring country, with representatives in Pakistan's the Punjab region partially attributing declining atmospheric conditions in their urban centers on hazardous particles originating in across the border following the celebrations.

Long-Standing Environmental Crisis

The dangerously high concentrations of air contamination in the capital have remained as a serious challenge for more than 15 years, with the condition showing no improvement.

During Diwali, the levels of toxic particulate matter in the air has been documented to increase dramatically to seventy percent above the worst readings ever measured in the Chinese city, which was previously regarded as the world's most polluted metropolis.

Various Pollution Sources

The situation in the capital is caused by a mix of various sources including heavy vehicle emissions, dust, building projects, garbage fires and pollutants from agricultural fires in nearby areas of farming communities.

Within these states, farmers illegally ignite agricultural waste to prepare for next season, generating dangerous haze that remains stagnant over the capital as winter air arrives.

Health and Financial Toll

The economic and health impact on the nearly 33 million people living in the metropolitan zone is enormous, according to various studies.

This pollution causes increased incidence of neurological, cardiovascular and lung diseases, and can potentially cause cancer.

Air quality crisis is projected to be accounting for 10,000 premature mortalities annually in Delhi.