Tuesday brought citizens of the planet's dirtiest urban center were faced with inhaling extremely polluted air that was classified as the "alarming" category.
Record-Breaking Pollution Measurements
Various sections of the city recorded an AQI above 500, which translates to 10x the healthy limit established by the WHO.
In some locations, levels of PM2.5 and PM10 reached peaks of 1,800, equating to fifteen to twenty times above healthy standards.
Pyrotechnics Restrictions and Current Policy Shifts
For the past four years, authorities had maintained a complete ban on the purchase and ignition of pyrotechnics during the Festival of Lights due to their substantial impact to the deadly haze that covers the metropolis as the cold season sets in.
However earlier this year, the newly elected regional government approached the judicial authority to request a easing of the prohibition.
The suggestion was allowing "eco-friendly fireworks" – previously doubted by environmentalists as being only approximately one-third reduced emissions – as a middle ground between "tradition and ecological concerns".
Judicial Ruling and Implementation
Despite concerns of environmental and health advocates, judicial authorities approved the appeal, specifying that green firecrackers could be ignited during limited periods throughout the celebrations.
During the celebrations, there was considerable flouting of the regulated periods across the capital, with minimal regulation regarding whether the firecrackers being used were actually the supposedly greener version.
Numerous air quality sensors throughout the capital showed contamination peaking around midnight to the most severe readings seen during celebrations in at least recent memory.
Cross-Border Effects
The widespread use of pyrotechnics during the celebrations also initiated a controversy with adjacent Pakistan, with officials in Pakistan's Punjab province partly blaming worsening air quality in Lahore on hazardous particles traveling from neighboring India following the celebrations.
Persistent Environmental Problem
Alarmingly severe concentrations of pollution in the city have persisted as a significant issue for fifteen-plus years, with the situation continuing to worsen.
Near the festival period, the levels of toxic particles in the atmosphere has been observed to spike to seventy percent above the most severe records ever documented in China's capital, which was previously considered as the globally most contaminated city.
Diverse Pollution Sources
This crisis in Delhi is resulting from a convergence of various sources including automobile exhaust, construction debris, building projects, rubbish burning and haze from farm burning in neighbouring regions of Punjab and Haryana.
Within these states, rural residents illegally set their fields on fire to prepare for next season, producing hazardous haze that becomes contained over the metropolitan area as colder air descends.
Medical and Economic Impact
The economic and health impact on the nearly 33 million people residing in the Delhi area is enormous, according to numerous research.
This pollution causes elevated rates of nervous system, cardiovascular and lung conditions, and can result in oncological diseases.
Air quality crisis is estimated to be responsible for 10,000 early fatalities per year in Delhi.
