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As Tuesday dawned inhabitants of this heavily contaminated metropolis were faced with inhaling severely hazardous air that fell into the "critical" range.

Extremely High Air Quality Levels

Multiple areas of the capital registered an AQI above 500, which represents ten times the safe threshold recommended by the WHO.

Certain monitoring stations, readings of toxic particulate matter hit highs of 1,800, equating to 15-20x above acceptable standards.

Fireworks Prohibition and New Developments

Since 2020, officials had maintained a comprehensive restriction on the purchase and ignition of pyrotechnics during the Festival of Lights due to their significant contribution to the hazardous pollution that covers the metropolis as colder weather begins.

However recently, the current city leadership approached the supreme court to request a modification of the prohibition.

Officials advocated for allowing "eco-friendly fireworks" – which have been doubted by environmental experts as being only approximately one-third lower impact – as a middle ground between "heritage and environment".

Court Ruling and Enforcement

To the disappointment of public health and environmental campaigners, judges approved the proposal, stipulating that eco-friendly pyrotechnics could be ignited during specific time windows throughout the festival.

On Monday night, there was considerable flouting of the designated hours across the metropolis, with minimal enforcement regarding whether the fireworks being used were actually the supposedly greener type.

Several air quality sensors throughout the city recorded air quality peaking around midnight to some of the worst levels recorded during celebrations in at least the past three years.

International Effects

Extensive ignition of fireworks during the festival also initiated a dispute with adjacent Pakistan, with representatives in Pakistani the Punjab region partially attributing worsening air quality in the city of Lahore on pollutants traveling from across the border following the events.

Long-Standing Pollution Problem

Alarmingly severe levels of air contamination in the city have remained as a major issue for over a decade and a half, with the problem gradually deteriorating.

During the festival period, the amount of toxic airborne contaminants in the atmosphere has been found to shoot up to seventy percent above the worst records ever recorded in the Chinese city, which was once viewed as the globally most contaminated city.

Multiple Contamination Sources

This crisis in the capital is resulting from a combination of different contributors including transportation pollution, airborne particles, development work, rubbish burning and pollutants from farm burning in neighbouring regions of neighboring agricultural zones.

Within these states, rural residents illegally burn crop residue to prepare for next season, producing toxic smog that remains stagnant over the city as winter air arrives.

Public Health and Economic Consequences

Both financial and medical impact on the nearly 33 million inhabitants living in the Delhi area is enormous, according to various studies.

The contaminated air causes high levels of nervous system, heart and circulatory and breathing conditions, and can result in oncological diseases.

The pollution is calculated to be causing approximately 10k untimely mortalities annually in the capital.