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On Tuesday morning inhabitants of this heavily contaminated metropolis were faced with inhaling severely hazardous air that fell into the "alarming" category.

Alarming Pollution Measurements

Various sections of the capital showed an AQI over 500, which translates to a tenfold increase over the safe level established by the global health authority.

In some locations, readings of toxic particulate matter reached peaks of eighteen hundred, equating to 15-20x above acceptable limits.

Firecracker Prohibition and New Changes

Beginning in 2020, authorities had enforced a total prohibition on the distribution and bursting of firecrackers during Diwali due to their substantial impact to the dangerous haze that covers the capital as the cold season approaches.

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

They proposed allowing "green crackers" – which have been doubted by conservation groups as being only approximately one-third reduced emissions – as a middle ground between "heritage and ecological concerns".

Legal Verdict and Implementation

Much to the frustration of public health and environmental advocates, judicial authorities approved the proposal, specifying that eco-friendly pyrotechnics could be ignited during limited time windows throughout the festival.

Throughout the festival evening, there was extensive flouting of the regulated periods across the capital, with insufficient regulation regarding whether the firecrackers being used were actually the supposedly greener variety.

Many air quality sensors throughout the city recorded air quality spiking around midnight to some of the worst levels recorded during Diwali in at least the past three years.

Regional Implications

The widespread use of firecrackers during Diwali also triggered a blame game with bordering the neighboring country, with representatives in Pakistan's Punjab province partially attributing deteriorating air quality in Lahore on contaminants traveling from across the border following the events.

Long-Standing Pollution Crisis

The dangerously high levels of atmospheric toxins in the city have remained as a significant issue for over a decade and a half, with the problem continuing to worsen.

Near the festival period, the levels of toxic particulate matter in the environment has been observed to increase dramatically to seventy percent above the most severe readings ever recorded in Beijing, which was formerly viewed as the world's most polluted urban center.

Multiple Pollution Contributors

The problem in Delhi is caused by a convergence of multiple factors including automobile exhaust, airborne particles, building projects, rubbish burning and haze from farm burning in neighbouring areas of Punjab and Haryana.

Within these states, farmers regularly burn crop residue to expedite field preparation, producing toxic smog that remains stagnant over the capital as colder air descends.

Public Health and Economic Toll

The economic and health impact on the nearly 33 million people calling home the Delhi area is significant, according to multiple research.

These hazardous conditions results in increased incidence of neurological, cardiovascular and respiratory diseases, and can result in oncological diseases.

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