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Tuesday brought citizens of the planet's dirtiest urban center encountered breathing severely hazardous air that was classified as the "critical" range.

Record-Breaking Air Quality Readings

Several parts of the capital showed an air quality index above 500, which translates to a tenfold increase over the safe limit recommended by the WHO.

Certain monitoring stations, concentrations of dangerous airborne particles hit highs of eighteen hundred, amounting to 15-20x exceeding acceptable levels.

Firecracker Prohibition and New Changes

Beginning in 2020, the government had enforced a total prohibition on the sale and use of fireworks during celebrations due to their substantial impact to the hazardous pollution that engulfs the capital as the cold season approaches.

Nevertheless recently, the newly elected city government petitioned the supreme court to seek a modification of the prohibition.

The suggestion was allowing "eco-friendly fireworks" – historically criticized by environmental experts as being only about 30% lower impact – as a balance between "heritage and public health".

Judicial Verdict and Reality

Despite concerns of environmental and health campaigners, judicial authorities complied with the appeal, stipulating that green firecrackers could be used during specific time windows throughout the Diwali.

During the celebrations, there was considerable disregard of the designated hours across the metropolis, with insufficient regulation regarding whether the fireworks being used were actually the eco-friendly variety.

Several air quality sensors throughout the capital showed contamination peaking around midnight to some of the worst levels recorded during Diwali in at least three years.

International Consequences

The proliferation of pyrotechnics during the celebrations also sparked a dispute with bordering the neighboring country, with officials in Pakistan's Punjab partly blaming declining atmospheric conditions in Lahore on pollutants traveling from across the border following the celebrations.

Chronic Environmental Problem

Alarmingly severe concentrations of atmospheric toxins in the capital have persisted as a major issue for more than 15 years, with the situation continuing to worsen.

During the festival period, the amount of hazardous particles in the air has been documented to shoot up to significantly exceeding the worst levels ever documented in China's capital, which was formerly considered as the globally most contaminated metropolis.

Diverse Contamination Factors

This crisis in Delhi is caused by a combination of various sources including heavy vehicle emissions, dust, building projects, waste incineration and pollutants from crop residue ignition in neighbouring states of neighboring agricultural zones.

Within these states, rural residents illegally burn crop residue to clear them quickly, generating dangerous haze that then gets trapped over the metropolitan area as colder air descends.

Public Health and Economic Impact

The economic and health impact on the approximately 33 million inhabitants living in the metropolitan zone is enormous, according to various studies.

The contaminated air leads to increased incidence of neurological, heart and circulatory and breathing diseases, and can even lead to cancer.

Environmental contamination is calculated to be causing ten thousand early deaths each year in the capital.