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As Tuesday dawned residents of the planet's dirtiest urban center found themselves breathing dangerously toxic air that fell into the "alarming" range.

Extremely High Pollution Measurements

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

Particular areas, readings of PM2.5 and PM10 soared to of 1800, representing 15 to 20 times above healthy levels.

Fireworks Restrictions and Current Changes

Since 2020, officials had maintained a complete ban on the purchase and ignition of fireworks during celebrations due to their major role to the deadly pollution that engulfs the metropolis as the cold season sets in.

However earlier this year, the newly elected local administration appealed to the supreme court to request a easing of the restrictions.

The suggestion was allowing "environmentally conscious pyrotechnics" – previously criticized by environmental experts as being only approximately one-third lower impact – as a middle ground between "tradition and environment".

Judicial Verdict and Reality

Much to the frustration of public health and environmental activists, the court approved the appeal, mandating that green firecrackers could be used during specific hours throughout the Diwali.

Throughout the festival evening, there was extensive disregard of the designated hours across the city, with insufficient enforcement regarding whether the fireworks being used were actually the supposedly greener type.

Many air quality sensors throughout the capital registered pollution spiking around midnight to extremely hazardous measurements recorded during celebrations in at least the past three years.

Regional Effects

The proliferation of pyrotechnics during the festival also sparked a controversy with bordering the neighboring country, with representatives in Pakistan's Punjab province partially attributing deteriorating atmospheric conditions in their urban centers on contaminants coming from across the border following the events.

Long-Standing Pollution Problem

Extremely elevated concentrations of air contamination in the city have continued as a major issue for over a decade and a half, with the problem gradually deteriorating.

During celebratory seasons, the levels of hazardous airborne contaminants in the atmosphere has been documented to shoot up to 70% higher the worst levels ever recorded in Beijing, which was formerly considered as the globally most contaminated urban center.

Multiple Contamination Factors

The situation in the capital is attributed to a mix of multiple factors including automobile exhaust, airborne particles, construction activities, waste incineration and haze from farm burning in nearby states of neighboring agricultural zones.

Within these states, rural residents regularly ignite agricultural waste to clear them quickly, creating hazardous haze that becomes contained over the capital as winter air arrives.

Public Health and Economic Impact

Both financial and medical toll on the approximately 33 million people calling home the Delhi area is substantial, according to multiple studies.

This pollution results in increased incidence of neurological, cardiovascular and respiratory conditions, and can even lead to oncological diseases.

Environmental contamination is estimated to be causing ten thousand untimely mortalities per year in Delhi.