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On Tuesday morning inhabitants of the planet's dirtiest urban center found themselves exposed to extremely polluted air that was classified as the "alarming" level.

Alarming Air Quality Measurements

Various sections of the city showed an pollution measurement exceeding 500, which represents ten times the safe level recommended by the WHO.

Particular areas, concentrations of toxic particulate matter soared to of 1,800, equating to fifteen to twenty times exceeding acceptable limits.

Pyrotechnics Prohibition and Recent Changes

For the past four years, the government had implemented a comprehensive restriction on the sale and use of firecrackers during the Festival of Lights due to their significant contribution to the deadly pollution that engulfs the capital as colder weather begins.

However recently, the newly elected local government approached the judicial authority to propose a modification of the restrictions.

Officials advocated for allowing "environmentally conscious pyrotechnics" – which have been questioned by environmental experts as being only about 30% lower impact – as a balance between "heritage and environment".

Legal Decision and Enforcement

To the disappointment of environmental and health activists, the court agreed to the appeal, specifying that green firecrackers could be set off during specific periods throughout the Diwali.

During the celebrations, there was extensive disregard of the designated hours across the city, with little monitoring regarding whether the pyrotechnics being used were actually the eco-friendly version.

Numerous recording stations throughout the capital recorded air quality reaching highest levels around the night hours to extremely hazardous measurements recorded during the festival in at least three years.

International Implications

Extensive ignition of fireworks during Diwali also sparked a controversy with neighbouring Pakistan, with officials in Pakistani Punjab partly blaming deteriorating atmospheric conditions in Lahore on contaminants traveling from across the border following the celebrations.

Chronic Pollution Problem

Extremely elevated concentrations of air contamination in Delhi have persisted as a major issue for more than 15 years, with the situation gradually deteriorating.

During the festival period, the levels of dangerous airborne contaminants in the air has been documented to shoot up to seventy percent above the most severe readings ever documented in the Chinese city, which was previously regarded as the globally most contaminated urban center.

Multiple Contamination Contributors

The problem in the city is caused by a convergence of various sources including transportation pollution, dust, construction activities, rubbish burning and pollutants from crop residue ignition in adjacent states of Punjab and Haryana.

Within these states, farmers illegally burn crop residue to clear them quickly, creating dangerous haze that remains stagnant over the city as winter air descends.

Public Health and Economic Toll

Public health and economic toll on the approximately 33 million residents living in the capital region is substantial, according to multiple research.

These hazardous conditions results in high levels of neurological, cardiovascular and lung disorders, and can potentially cause cancer.

The pollution is projected to be accounting for ten thousand untimely fatalities annually in the city.