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Tuesday brought inhabitants of the world's most polluted city were faced with exposed to dangerously toxic air that registered in the "alarming" level.

Alarming Air Quality Levels

Several parts of the capital showed an pollution measurement above 500, which represents a tenfold increase over the recommended threshold recommended by the World Health Organization.

Certain monitoring stations, concentrations of PM2.5 and PM10 reached peaks of 1800, amounting to 15 to 20 times above healthy limits.

Pyrotechnics Prohibition and Current Policy Shifts

For the past four years, the government had implemented a comprehensive restriction on the sale and use of pyrotechnics during the Festival of Lights due to their major role to the dangerous haze that engulfs the metropolis as colder weather begins.

However recently, the newly elected regional administration petitioned the highest court to propose a modification of the restrictions.

The suggestion was allowing "environmentally conscious pyrotechnics" – historically criticized by environmental experts as being only roughly 30 percent less polluting – as a compromise between "tradition and ecological concerns".

Judicial Ruling and Reality

To the disappointment of medical and ecological advocates, the court agreed to the appeal, stipulating that eco-friendly pyrotechnics could be used during designated hours throughout the festival.

On Monday night, there was widespread violation of the designated hours across the city, with little regulation regarding whether the firecrackers being used were actually the more environmentally friendly type.

Several air quality sensors throughout the capital recorded contamination peaking around the night hours to extremely hazardous readings seen during Diwali in at least recent memory.

International Consequences

Extensive ignition of fireworks during the celebrations also initiated a dispute with bordering Pakistan, with authorities in Pakistani the Punjab region partly blaming deteriorating atmospheric conditions in Lahore on hazardous particles traveling from neighboring India following the events.

Chronic Environmental Issue

Alarmingly severe levels of atmospheric toxins in Delhi have remained as a significant issue for fifteen-plus years, with the situation showing no improvement.

Near the festival period, the amount of dangerous airborne contaminants in the environment has been found to increase dramatically to seventy percent above the most severe levels ever recorded in China's capital, which was formerly regarded as the planet's dirtiest metropolis.

Various Pollution Sources

The situation in Delhi is caused by a convergence of various sources including transportation pollution, construction debris, development work, rubbish burning and haze from farm burning in neighbouring areas of Punjab and Haryana.

In these regions, farmers regularly ignite agricultural waste to expedite field preparation, creating dangerous haze that then gets trapped over the metropolitan area as winter air sets in.

Health and Financial Impact

Public health and economic toll on the approximately 33 million residents calling home the Delhi area is enormous, according to various research.

This pollution results in high levels of neurological, heart and circulatory and lung conditions, and can potentially cause cancer.

Environmental contamination is projected to be accounting for 10,000 premature mortalities each year in Delhi.