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Tuesday brought residents of this heavily contaminated metropolis were faced with breathing severely hazardous air that was classified as the "severe" level.

Extremely High Air Quality Measurements

Various sections of the capital registered an AQI over 500, which equals a tenfold increase over the recommended limit recommended by the global health authority.

In some locations, readings of dangerous airborne particles hit highs of 1800, equating to 15-20x exceeding acceptable limits.

Pyrotechnics Prohibition and New Developments

Beginning in 2020, authorities had maintained a total prohibition on the purchase and ignition of pyrotechnics during celebrations due to their substantial impact to the dangerous pollution that blankets the city as the cold season approaches.

Yet recently, the recently formed regional government appealed to the highest court to seek a modification of the ban.

They proposed allowing "green crackers" – historically criticized by environmental experts as being only about 30% less polluting – as a balance between "heritage and environment".

Judicial Verdict and Implementation

Much to the frustration of medical and ecological activists, the court agreed to the proposal, specifying that environmentally conscious fireworks could be set off during specific periods throughout the festival.

Throughout the festival evening, there was extensive flouting of the time restrictions across the city, with insufficient enforcement regarding whether the pyrotechnics being used were actually the supposedly greener variety.

Several recording stations throughout the capital showed pollution peaking around the night hours to some of the worst readings observed during the festival in at least three years.

Cross-Border Effects

Extensive ignition of pyrotechnics during Diwali also triggered a blame game with neighbouring Pakistan, with officials in Pakistan's the Punjab region partly blaming declining air quality in Lahore on hazardous particles traveling from neighboring India following the festivities.

Chronic Environmental Issue

Extremely elevated concentrations of air contamination in the capital have continued as a major challenge for more than 15 years, with the problem gradually deteriorating.

Near the festival period, the levels of hazardous particles in the atmosphere has been documented to spike to seventy percent above the peak readings ever documented in Beijing, which was formerly considered as the globally most contaminated city.

Multiple Pollution Factors

The situation in the capital is resulting from a convergence of various sources including automobile exhaust, dust, development work, garbage fires and haze from farm burning in neighbouring areas of neighboring agricultural zones.

In these regions, agricultural workers routinely ignite agricultural waste to clear them quickly, producing toxic smog that then gets trapped over the metropolitan area as cooler air arrives.

Public Health and Financial Consequences

The economic and health consequences on the nearly 33 million inhabitants calling home the metropolitan zone is enormous, according to various investigations.

These hazardous conditions causes high levels of neurological, cardiovascular and respiratory disorders, and can even lead to malignancies.

Environmental contamination is projected to be responsible for 10,000 early deaths each year in the city.