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Tuesday brought citizens of the world's most polluted city were faced with inhaling severely hazardous air that fell into the "severe" category.

Alarming Pollution Levels

Multiple areas of the city showed an AQI exceeding 500, which equals a tenfold increase over the safe threshold established by the WHO.

Certain monitoring stations, levels of dangerous airborne particles hit highs of 1800, representing 15 to 20 times exceeding acceptable standards.

Fireworks Prohibition and New Policy Shifts

Since 2020, the government had implemented a complete ban on the distribution and bursting of firecrackers during Diwali due to their substantial impact to the dangerous pollution that blankets the metropolis as colder weather approaches.

However earlier this year, the newly elected local government petitioned the supreme court to propose a relaxation of the ban.

The suggestion was allowing "eco-friendly fireworks" – which have been questioned by environmental experts as being only roughly 30 percent less polluting – as a middle ground between "heritage and environment".

Legal Verdict and Implementation

To the disappointment of medical and ecological advocates, the court approved the request, specifying that green firecrackers could be set off during specific hours throughout the celebrations.

Throughout the festival evening, there was considerable violation of the time restrictions across the metropolis, with insufficient regulation regarding whether the fireworks being used were actually the supposedly greener version.

Numerous air quality sensors throughout the capital showed contamination peaking around late evening to extremely hazardous readings seen during Diwali in at least three years.

International Implications

The proliferation of firecrackers during the festival also initiated a dispute with neighbouring Pakistan, with representatives in Pakistani Punjab province partly blaming declining air quality in the city of Lahore on pollutants coming from neighboring India following the celebrations.

Long-Standing Pollution Problem

Extremely elevated readings of air contamination in Delhi have remained as a significant issue for over a decade and a half, with the condition continuing to worsen.

Near Diwali, the amount of dangerous airborne contaminants in the environment has been observed to spike to 70% higher the most severe readings ever recorded in the Chinese city, which was formerly viewed as the globally most contaminated city.

Diverse Contamination Sources

This crisis in Delhi is caused by a mix of multiple factors including automobile exhaust, construction debris, construction activities, garbage fires and haze from farm burning in adjacent areas of neighboring agricultural zones.

In these regions, farmers routinely set their fields on fire to prepare for next season, producing toxic pollution that then gets trapped over the capital as cooler air descends.

Medical and Economic Toll

Both financial and medical toll on the nearly 33 million residents calling home the metropolitan zone is enormous, according to various studies.

These hazardous conditions leads to elevated rates of nervous system, heart and circulatory and lung conditions, and can even lead to oncological diseases.

Environmental contamination is calculated to be responsible for ten thousand premature fatalities each year in Delhi.