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On Tuesday morning inhabitants of the world's most polluted city were faced with exposed to dangerously toxic air that was classified as the "severe" level.

Extremely High Air Quality Levels

Several parts of Delhi recorded an AQI exceeding 500, which represents 10x the safe level set by the global health authority.

Particular areas, readings of PM2.5 and PM10 hit highs of 1800, equating to 15 to 20 times higher than acceptable limits.

Pyrotechnics Ban and Recent Changes

Since 2020, officials had maintained a comprehensive restriction on the distribution and bursting of firecrackers during the Festival of Lights due to their substantial impact to the deadly haze that engulfs the city as the cold season begins.

However in recent months, the newly elected local leadership approached the highest court to request a modification of the prohibition.

Officials advocated for allowing "environmentally conscious pyrotechnics" – previously criticized by environmentalists as being only approximately one-third lower impact – as a middle ground between "cultural practices and ecological concerns".

Judicial Ruling and Reality

To the disappointment of medical and ecological activists, judges complied with the proposal, mandating that eco-friendly pyrotechnics could be ignited during designated hours throughout the festival.

During the celebrations, there was widespread disregard of the time restrictions across the city, with little regulation regarding whether the fireworks being used were actually the eco-friendly type.

Many air quality sensors throughout the city showed pollution spiking around the night hours to the most severe measurements seen during Diwali in at least recent memory.

Cross-Border Consequences

Extensive ignition of fireworks during the celebrations also triggered a blame game with adjacent the neighboring country, with officials in Pakistani the Punjab region partially attributing declining atmospheric conditions in Lahore on hazardous particles originating in India following the festivities.

Chronic Environmental Issue

Extremely elevated concentrations of pollution in the city have remained as a major problem for fifteen-plus years, with the problem gradually deteriorating.

Near the festival period, the concentration of dangerous airborne contaminants in the atmosphere has been observed to spike to 70% higher the most severe records ever measured in Beijing, which was previously viewed as the globally most contaminated urban center.

Various Pollution Sources

The situation in the city is attributed to a convergence of different contributors including automobile exhaust, dust, building projects, garbage fires and pollutants from crop residue ignition in neighbouring regions of neighboring agricultural zones.

In these regions, rural residents routinely set their fields on fire to prepare for next season, producing hazardous haze that becomes contained over the capital as colder air sets in.

Health and Financial Impact

Both financial and medical consequences on the nearly 33 million inhabitants living in the capital region is significant, according to multiple research.

These hazardous conditions leads to increased incidence of neurological, cardiovascular and respiratory disorders, and can result in oncological diseases.

The pollution is estimated to be causing 10,000 early mortalities annually in the capital.