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As Tuesday dawned inhabitants of the planet's dirtiest urban center encountered breathing extremely polluted air that was classified as the "severe" level.

Alarming Pollution Levels

Multiple areas of Delhi registered an air quality index over 500, which represents 10x the healthy limit set by the World Health Organization.

Certain monitoring stations, concentrations of dangerous airborne particles soared to of 1800, representing fifteen to twenty times above safe levels.

Fireworks Ban and New Developments

Beginning in 2020, authorities had implemented a total prohibition on the purchase and ignition of pyrotechnics during celebrations due to their substantial impact to the deadly pollution that blankets the city as colder weather begins.

Yet earlier this year, the current local government appealed to the highest court to propose a relaxation of the ban.

They proposed allowing "environmentally conscious pyrotechnics" – previously criticized by environmentalists as being only approximately one-third reduced emissions – as a compromise between "heritage and ecological concerns".

Judicial Ruling and Implementation

To the disappointment of environmental and health activists, judges agreed to the proposal, stipulating that green firecrackers could be used during designated hours throughout the celebrations.

On Monday night, there was extensive violation of the time restrictions across the metropolis, with insufficient monitoring regarding whether the firecrackers being used were actually the eco-friendly variety.

Several monitoring devices throughout the city registered pollution spiking around the night hours to the most severe levels seen during Diwali in at least recent memory.

Cross-Border Consequences

The widespread use of firecrackers during Diwali also initiated a dispute with adjacent the neighboring country, with authorities in Pakistani Punjab province pointing to worsening air quality in their urban centers on hazardous particles coming from across the border following the celebrations.

Long-Standing Environmental Crisis

Extremely elevated readings of atmospheric toxins in the capital have continued as a serious challenge for more than 15 years, with the situation continuing to worsen.

During the festival period, the amount of toxic particulate matter in the atmosphere has been observed to shoot up to significantly exceeding the worst levels ever documented in Beijing, which was previously considered as the globally most contaminated city.

Multiple Pollution Contributors

This crisis in Delhi is caused by a convergence of multiple factors including heavy vehicle emissions, dust, construction activities, garbage fires and smoke from farm burning in nearby regions of farming communities.

Throughout these areas, rural residents routinely ignite agricultural waste to clear them quickly, producing toxic pollution that becomes contained over the city as colder air descends.

Public Health and Financial Toll

Public health and economic consequences on the approximately 33 million inhabitants residing in the Delhi area is significant, according to multiple studies.

This pollution leads to elevated rates of neurological, heart and circulatory and breathing disorders, and can even lead to cancer.

Air quality crisis is projected to be causing approximately 10k early mortalities each year in Delhi.