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On Tuesday morning residents of the world's most polluted city found themselves inhaling severely hazardous air that was classified as the "critical" range.

Extremely High Pollution Readings

Several parts of the capital showed an AQI exceeding 500, which translates to a tenfold increase over the recommended threshold recommended by the World Health Organization.

Particular areas, concentrations of dangerous airborne particles soared to of eighteen hundred, equating to fifteen to twenty times above safe levels.

Fireworks Restrictions and New Policy Shifts

Since 2020, officials had implemented a comprehensive restriction on the sale and use of pyrotechnics during the Festival of Lights due to their major role to the deadly pollution that covers the city as the cold season sets in.

However earlier this year, the current regional administration petitioned the highest court to request a relaxation of the prohibition.

Officials advocated for allowing "green crackers" – historically doubted by environmental experts as being only about 30% lower impact – as a middle ground between "heritage and public health".

Court Verdict and Enforcement

Much to the frustration of public health and environmental advocates, judicial authorities agreed to the proposal, stipulating that eco-friendly pyrotechnics could be ignited during designated periods throughout the celebrations.

On Monday night, there was widespread disregard of the time restrictions across the capital, with minimal enforcement regarding whether the fireworks being used were actually the eco-friendly type.

Numerous air quality sensors throughout Delhi registered air quality peaking around the night hours to extremely hazardous levels observed during Diwali in at least the past three years.

Cross-Border Effects

The widespread use of firecrackers during Diwali also initiated a controversy with bordering the neighboring country, with authorities in Pakistani the Punjab region partly blaming declining pollution levels in their urban centers on hazardous particles coming from India following the festivities.

Long-Standing Environmental Issue

Alarmingly severe levels of atmospheric toxins in the city have persisted as a significant challenge for fifteen-plus years, with the condition gradually deteriorating.

Near the festival period, the levels of hazardous particles in the air has been found to shoot up to significantly exceeding the most severe readings ever measured in the Chinese city, which was formerly viewed as the globally most contaminated metropolis.

Multiple Contamination Factors

This crisis in the city is attributed to a combination of various sources including automobile exhaust, construction debris, building projects, garbage fires and haze from crop residue ignition in adjacent states of neighboring agricultural zones.

Within these states, agricultural workers routinely ignite agricultural waste to expedite field preparation, creating toxic haze that remains stagnant over the capital as cooler air arrives.

Health and Economic Consequences

Public health and economic consequences on the nearly 33 million people living in the metropolitan zone is significant, according to various investigations.

The contaminated air causes high levels of neurological, cardiovascular and breathing conditions, and can result in oncological diseases.

Environmental contamination is estimated to be causing ten thousand untimely deaths annually in Delhi.