Air Pollution in NCR: Causes, Impact & Solutions

Air Pollution in NCR: Causes, Impact & Solutions

Air pollution in Delhi and the National Capital Region (NCR) has become a serious public health

and environmental issue for India. Each year around winter, a thick blanket of smog settles,

suﬀocating the residents and disrupting their daily activities. The health impacts of poor air quality stretch well beyond the temporary inconvenience of Residents of Delhi. The World Health

Organisation (WHO) has estimated that air pollution accounts for approximately 7 million deaths

annually, which demonstrates the magnitude of a problem that continues to worsen.

There are many factors contributing to the persistent air pollution in the NCR, one of the leading

causes is the excessive number of vehicles on the roads. The vehicular population in Delhi-NCR is among the highest across the country. Emitted petrol and diesel vehicle gases contain a number of poisonous pollutants including particulate matter (PM2.5 and PM10) and nitrogen oxides. With the population of vehicles, the rate of air pollution is expected to follow. Multiple studies have identified the transportation sector as a leading cause of air pollution in NCR.

Pollution caused by industrial activities is also a big concern. In and around NCR there are

boundless numbers of factories, brick kilns, diesel generators, and coal-based power plants that

contribute to the already worsening air quality. Industrial and power generation activities are the

primary causes of the air pollution challenge Delhi faces today.

Dust also plays a significant role. During construction, demolition, and even from unsealed roads

and open land, airborne dust particles are created. Lots of projects in the Delhi-NCR area create

dust as part of the project that stays suspended, and it gets worse with open burn practices of

waste as they release toxic compounds.

During the winter months, pollution is worsened by the stubble burning from the nearest states of

Punjab and Haryana. Farmers burn the remains of their harvest, and the smoke comes to Delhi

because of the winds. This adds to the thick fog people see in the months of October and

November. Researchers agree that stubble burning is worse for pollution during some periods;

however, dust, vehicles, and industries are the main factors that cause pollution during the year.

The eﬀects of pollution are extremely dangerous. It can lead to respiratory illnesses, lung cancer,

heart disease, stroke, and even reduce lung function. Children and the elderly and people with

these illnesses are the most vulnerable because their bodies cannot adjust to the polluted

environment. Confronting this issue demands a combination of a short, medium, and long-term

Approach.

Here, the expansion of public transport, promotion of EVs, control of industrial

emissions, and better management of solid waste, along with dust control measures and the

implementation of building regulations, can assist in the mitigation of this problem. Further, better

enforcement of the National Clean Air Programme (NCAP), improved tracing of pollution sources, and adoption of more eﬀective alternatives to stubble burning are important measures.

Key Data on Air Pollution in NCR

Global vs Delhi Air Quality: The WHO recommends an annual PM2.5 level of 5 µg/m³, while Delhi’s annual average PM2.5 concentration often exceeds 90 µg/m³, making it among the most polluted major cities in the world.
Vehicle Emissions: Transport contributes approximately 20–30% of Delhi’s PM2.5 pollution, making it one of the largest local sources of air pollution in the NCR.
Air Pollution and Health: Air pollution causes around 7 million deaths globally every year, including an estimated 2.1 million deaths in India annually linked to exposure to polluted air.
Stubble Burning Impact: During peak burning periods in October and November, stubble burning can contribute up to 40% of Delhi’s daily PM2.5 levels, but for most of the year, local sources such as vehicles, industries, and dust remain the dominant contributors.
Construction and Road Dust: Studies estimate that road dust and construction activities can account for 30–40% of PM10 pollution in Delhi-NCR during certain periods.
Pollution Levels: An AQI (Air Quality Index) between 0–50 is considered “Good”, while Delhi’s AQI during severe winter episodes often exceeds 400–500, falling into the “Severe” category.
Children’s Health: Research suggests that children living in highly polluted cities can have 10–20% lower lung capacity compared to those living in areas with cleaner air.
Electric Vehicles vs Conventional Vehicles: Electric vehicles produce zero tailpipe emissions, while petrol and diesel vehicles continuously release pollutants such as nitrogen oxides and particulate matter that contribute directly to urban air pollution.