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On Tuesday morning citizens of the world's most polluted city encountered breathing dangerously toxic air that registered in the "critical" level.

Record-Breaking Pollution Measurements

Multiple areas of the city showed an AQI exceeding 500, which equals ten times the safe level set by the WHO.

In some locations, concentrations of PM2.5 and PM10 hit highs of 1800, equating to fifteen to twenty times higher than safe standards.

Fireworks Ban and Current Policy Shifts

Beginning in 2020, officials had implemented a complete ban on the sale and use of fireworks during celebrations due to their substantial impact to the dangerous haze that covers the city as colder weather sets in.

Yet in recent months, the newly elected regional leadership petitioned the judicial authority to propose a modification of the restrictions.

They proposed allowing "environmentally conscious pyrotechnics" – previously questioned by environmental experts as being only approximately one-third reduced emissions – as a balance between "cultural practices and ecological concerns".

Judicial Verdict and Implementation

Much to the frustration of public health and environmental advocates, judges approved the appeal, mandating that green firecrackers could be used during specific hours throughout the Diwali.

During the celebrations, there was extensive flouting of the designated hours across the metropolis, with insufficient monitoring regarding whether the firecrackers being used were actually the supposedly greener variety.

Many air quality sensors throughout the city showed air quality reaching highest levels around the night hours to some of the worst readings recorded during celebrations in at least three years.

Regional Implications

The proliferation of firecrackers during the festival also initiated a dispute with bordering Pakistan, with representatives in Pakistani the Punjab region partly blaming worsening pollution levels in Lahore on hazardous particles traveling from neighboring India following the events.

Persistent Environmental Crisis

The dangerously high levels of atmospheric toxins in the city have persisted as a serious challenge for fifteen-plus years, with the condition continuing to worsen.

Near the festival period, the amount of dangerous airborne contaminants in the atmosphere has been documented to shoot up to 70% higher the worst readings ever measured in Beijing, which was previously considered as the planet's dirtiest city.

Multiple Pollution Factors

The problem in the city is caused by a mix of various sources including heavy vehicle emissions, construction debris, construction activities, garbage fires and pollutants from crop residue ignition in neighbouring regions of farming communities.

Throughout these areas, farmers routinely ignite agricultural waste to clear them quickly, generating hazardous haze that then gets trapped over the city as colder air sets in.

Health and Economic Impact

The economic and health impact on the nearly 33 million inhabitants residing in the Delhi area is enormous, according to various investigations.

The contaminated air leads to elevated rates of nervous system, heart and circulatory and lung disorders, and can potentially cause malignancies.

Environmental contamination is calculated to be responsible for ten thousand untimely deaths annually in Delhi.