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As Tuesday dawned inhabitants of the world's most polluted city found themselves breathing dangerously toxic air that was classified as the "severe" level.

Record-Breaking Air Quality Measurements

Various sections of Delhi showed an AQI exceeding 500, which represents a tenfold increase over the healthy level established by the World Health Organization.

Certain monitoring stations, levels of dangerous airborne particles reached peaks of eighteen hundred, amounting to 15-20x higher than safe levels.

Pyrotechnics Restrictions and New Policy Shifts

For the past four years, authorities had enforced a complete ban on the sale and use of pyrotechnics during Diwali due to their significant contribution to the hazardous haze that engulfs the capital as winter sets in.

However recently, the newly elected local administration approached the highest court to seek a relaxation of the prohibition.

They proposed allowing "green crackers" – previously doubted by environmental experts as being only roughly 30 percent lower impact – as a middle ground between "cultural practices and ecological concerns".

Legal Ruling and Reality

Despite concerns of medical and ecological campaigners, the court complied with the appeal, stipulating that green firecrackers could be ignited during specific hours throughout the Diwali.

On Monday night, there was widespread violation of the designated hours across the capital, with insufficient monitoring regarding whether the firecrackers being used were actually the more environmentally friendly variety.

Numerous monitoring devices throughout the capital showed pollution spiking around the night hours to the most severe measurements recorded during Diwali in at least the past three years.

Cross-Border Implications

Extensive ignition of fireworks during the festival also triggered a dispute with adjacent the neighboring country, with officials in Pakistan's Punjab province pointing to worsening atmospheric conditions in the city of Lahore on hazardous particles traveling from India following the events.

Long-Standing Environmental Problem

Alarmingly severe concentrations of atmospheric toxins in the capital have remained as a serious challenge for fifteen-plus years, with the problem showing no improvement.

During celebratory seasons, the levels of hazardous airborne contaminants in the atmosphere has been observed to spike to 70% higher the worst levels ever recorded in the Chinese city, which was previously considered as the globally most contaminated urban center.

Multiple Contamination Contributors

This crisis in Delhi is attributed to a mix of multiple factors including heavy vehicle emissions, dust, development work, waste incineration and pollutants from farm burning in nearby states of Punjab and Haryana.

In these regions, farmers routinely ignite agricultural waste to prepare for next season, generating hazardous pollution that becomes contained over the capital as cooler air arrives.

Public Health and Financial Consequences

Both financial and medical consequences on the approximately 33 million people calling home the capital region is substantial, according to multiple research.

The contaminated air leads to high levels of nervous system, heart and circulatory and breathing conditions, and can potentially cause cancer.

Air quality crisis is projected to be responsible for ten thousand premature mortalities annually in the capital.