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Tuesday brought residents of the planet's dirtiest urban center found themselves inhaling extremely polluted air that registered in the "critical" level.

Extremely High Pollution Readings

Multiple areas of Delhi recorded an air quality index above 500, which equals a tenfold increase over the recommended limit recommended by the WHO.

In some locations, concentrations of toxic particulate matter hit highs of eighteen hundred, representing 15-20x exceeding safe limits.

Pyrotechnics Ban and Recent Changes

Since 2020, the government had enforced a total prohibition on the distribution and bursting of firecrackers during celebrations due to their substantial impact to the dangerous smog that blankets the capital as colder weather sets in.

However in recent months, the newly elected regional leadership petitioned the highest court to seek a relaxation of the prohibition.

The suggestion was allowing "green crackers" – which have been criticized by environmental experts as being only about 30% lower impact – as a middle ground between "tradition and environment".

Legal Decision and Enforcement

Much to the frustration of medical and ecological campaigners, judges approved the appeal, specifying that eco-friendly pyrotechnics could be set off during specific time windows throughout the celebrations.

Throughout the festival evening, there was considerable flouting of the regulated periods across the city, with insufficient monitoring regarding whether the fireworks being used were actually the eco-friendly version.

Many monitoring devices throughout the city registered air quality reaching highest levels around late evening to the most severe readings recorded during Diwali in at least recent memory.

Cross-Border Consequences

The proliferation of pyrotechnics during Diwali also triggered a blame game with bordering Pakistan, with officials in Pakistani Punjab partially attributing declining air quality in Lahore on contaminants coming from neighboring India following the festivities.

Chronic Environmental Issue

The dangerously high readings of pollution in the capital have remained as a serious problem for over a decade and a half, with the condition showing no improvement.

Around Diwali, the concentration of hazardous particles in the air has been observed to shoot up to 70% higher the peak levels ever recorded in Beijing, which was once viewed as the planet's dirtiest city.

Diverse Contamination Sources

The situation in Delhi is caused by a convergence of different contributors including heavy vehicle emissions, dust, construction activities, waste incineration and pollutants from farm burning in neighbouring states of farming communities.

Within these states, agricultural workers illegally ignite agricultural waste to clear them quickly, generating hazardous haze that becomes contained over the metropolitan area as cooler air arrives.

Health and Economic Toll

Both financial and medical toll on the roughly thirty-three million people residing in the Delhi area is substantial, according to various research.

This pollution causes high levels of nervous system, cardiovascular and lung disorders, and can result in malignancies.

The pollution is calculated to be responsible for ten thousand early mortalities annually in Delhi.