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As Tuesday dawned inhabitants of the world's most polluted city found themselves exposed to extremely polluted air that fell into the "alarming" level.

Alarming Pollution Measurements

Several parts of the city recorded an air quality index above 500, which represents 10x the healthy threshold recommended by the WHO.

In some locations, levels of toxic particulate matter soared to of 1800, representing fifteen to twenty times above healthy standards.

Fireworks Restrictions and New Policy Shifts

Beginning in 2020, authorities had enforced a comprehensive restriction on the sale and use of firecrackers during celebrations due to their major role to the dangerous pollution that covers the metropolis as winter sets in.

Yet recently, the newly elected city administration petitioned the supreme court to propose a modification of the prohibition.

The suggestion was allowing "eco-friendly fireworks" – previously criticized by environmental experts as being only approximately one-third reduced emissions – as a balance between "cultural practices and public health".

Judicial Verdict and Implementation

Despite concerns of medical and ecological advocates, the court complied with the appeal, specifying that environmentally conscious fireworks could be used during specific periods throughout the celebrations.

On Monday night, there was widespread disregard of the designated hours across the capital, with minimal enforcement regarding whether the fireworks being used were actually the supposedly greener variety.

Several monitoring devices throughout the capital recorded pollution spiking around late evening to extremely hazardous measurements recorded during Diwali in at least three years.

Regional Consequences

The widespread use of pyrotechnics during the festival also sparked a blame game with adjacent Pakistan, with officials in Pakistani Punjab partly blaming worsening air quality in Lahore on contaminants originating in India following the festivities.

Chronic Environmental Crisis

Alarmingly severe levels of pollution in Delhi have continued as a significant challenge for fifteen-plus years, with the situation gradually deteriorating.

Around Diwali, the amount of toxic particles in the air has been observed to shoot up to seventy percent above the worst records ever measured in China's capital, which was previously viewed as the planet's dirtiest urban center.

Various Contamination Sources

The situation in the capital is attributed to a combination of various sources including automobile exhaust, airborne particles, development work, rubbish burning and smoke from farm burning in neighbouring regions of Punjab and Haryana.

Throughout these areas, rural residents illegally ignite agricultural waste to expedite field preparation, generating hazardous haze that then gets trapped over the metropolitan area as colder air arrives.

Medical and Financial Toll

The economic and health impact on the nearly 33 million residents calling home the capital region is significant, according to various studies.

The contaminated air leads to increased incidence of neurological, heart and circulatory and breathing diseases, and can potentially cause oncological diseases.

Environmental contamination is estimated to be responsible for approximately 10k early deaths annually in Delhi.