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Tuesday brought residents of this heavily contaminated metropolis found themselves breathing dangerously toxic air that fell into the "alarming" level.

Record-Breaking Air Quality Levels

Various sections of Delhi registered an air quality index above 500, which represents a tenfold increase over the healthy level set by the World Health Organization.

Certain monitoring stations, concentrations of toxic particulate matter reached peaks of 1800, representing 15-20x above healthy limits.

Fireworks Ban and Current Changes

Since 2020, the government had implemented a complete ban on the purchase and ignition of firecrackers during celebrations due to their major role to the dangerous pollution that engulfs the metropolis as winter begins.

Yet earlier this year, the recently formed city administration petitioned the supreme court to request a modification of the prohibition.

They proposed allowing "green crackers" – which have been doubted by environmental experts as being only roughly 30 percent lower impact – as a balance between "heritage and public health".

Legal Verdict and Implementation

Despite concerns of public health and environmental advocates, judicial authorities complied with the request, mandating that environmentally conscious fireworks could be used during specific hours throughout the Diwali.

Throughout the festival evening, there was widespread violation of the regulated periods across the city, with minimal enforcement regarding whether the firecrackers being used were actually the more environmentally friendly type.

Many air quality sensors throughout the capital registered air quality spiking around midnight to some of the worst measurements recorded during celebrations in at least recent memory.

International Consequences

The proliferation of firecrackers during Diwali also sparked a blame game with adjacent the neighboring country, with authorities in Pakistan's Punjab partially attributing declining air quality in Lahore on contaminants originating in across the border following the events.

Persistent Pollution Crisis

Alarmingly severe levels of pollution in Delhi have remained as a major issue for over a decade and a half, with the situation showing no improvement.

Near the festival period, the amount of toxic particles in the atmosphere has been observed to increase dramatically to significantly exceeding the worst records ever measured in the Chinese city, which was formerly viewed as the world's most polluted metropolis.

Diverse Pollution Contributors

The problem in the city is resulting from a combination of various sources including transportation pollution, construction debris, building projects, garbage fires and smoke from farm burning in neighbouring regions of neighboring agricultural zones.

Throughout these areas, agricultural workers regularly ignite agricultural waste to expedite field preparation, producing dangerous haze that then gets trapped over the capital as winter air arrives.

Health and Financial Toll

Public health and economic impact on the approximately 33 million residents calling home the capital region is enormous, according to various studies.

These hazardous conditions leads to increased incidence of nervous system, cardiovascular and respiratory diseases, and can result in cancer.

Environmental contamination is estimated to be responsible for 10,000 early mortalities each year in Delhi.