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As Tuesday dawned inhabitants of the world's most polluted city were faced with breathing severely hazardous air that fell into the "alarming" level.

Alarming Pollution Readings

Multiple areas of Delhi recorded an pollution measurement exceeding 500, which represents ten times the recommended level established by the World Health Organization.

Certain monitoring stations, readings of toxic particulate matter soared to of eighteen hundred, equating to fifteen to twenty times above acceptable levels.

Firecracker Ban and Current Policy Shifts

Since 2020, authorities had enforced a comprehensive restriction on the sale and use of fireworks during Diwali due to their significant contribution to the deadly smog that blankets the capital as winter approaches.

Nevertheless earlier this year, the recently formed regional administration appealed to the supreme court to propose a easing of the prohibition.

They proposed allowing "environmentally conscious pyrotechnics" – previously criticized by environmentalists as being only about 30% reduced emissions – as a middle ground between "heritage and public health".

Court Verdict and Implementation

To the disappointment of public health and environmental campaigners, judicial authorities complied with the appeal, specifying that eco-friendly pyrotechnics could be ignited during designated periods throughout the celebrations.

On Monday night, there was extensive flouting of the time restrictions across the capital, with little monitoring regarding whether the pyrotechnics being used were actually the eco-friendly version.

Many monitoring devices throughout Delhi showed contamination reaching highest levels around late evening to extremely hazardous levels seen during the festival in at least the past three years.

Cross-Border Consequences

The proliferation of pyrotechnics during the festival also initiated a blame game with bordering Pakistan, with representatives in Pakistan's the Punjab region partly blaming deteriorating air quality in their urban centers on pollutants originating in across the border following the events.

Persistent Pollution Issue

The dangerously high readings of air contamination in the capital have remained as a significant problem for fifteen-plus years, with the condition showing no improvement.

Around Diwali, the levels of toxic particles in the atmosphere has been found to increase dramatically to 70% higher the most severe records ever documented in China's capital, which was formerly considered as the planet's dirtiest urban center.

Diverse Contamination Contributors

The problem in the capital is resulting from a convergence of different contributors including automobile exhaust, airborne particles, building projects, garbage fires and haze from crop residue ignition in adjacent areas of neighboring agricultural zones.

In these regions, agricultural workers illegally ignite agricultural waste to expedite field preparation, creating toxic haze that remains stagnant over the capital as cooler air sets in.

Health and Economic Toll

Both financial and medical toll on the nearly 33 million inhabitants residing in the metropolitan zone is significant, according to various research.

This pollution leads to high levels of nervous system, cardiovascular and lung diseases, and can potentially cause oncological diseases.

The pollution is projected to be responsible for approximately 10k premature fatalities per year in the city.