Brian Barton
New Delhi has consistently been ranked among the world's most polluted cities, and in 2024, it was declared the most polluted capital city in the world for the fourth consecutive year by IQAir. The city's poor air quality has been attributed to various factors, including vehicular emissions, industrial activities, crop burning, and garbage fires. The air pollution in New Delhi has severe health implications, with an estimated 2.2 million children suffering from irreversible lung damage and air pollution being the fifth-largest cause of death in India.
| Characteristics | Values |
|---|---|
| Date | 20 March 2024 |
| Organisation | IQAir |
| Report | 6th Annual World Air Quality Report |
| India's rank | Third most polluted country globally |
| India's PM2.5 concentration | Exceeded the WHO annual guideline by more than 10 times |
| India's most polluted metropolitan area | Begusarai |
| India's average PM2.5 concentration | 54.4 μg/m3 in 2023 |
| National Capital Region's PM2.5 level increase | 10% |
| National Capital Region's monthly average PM2.5 level | 255 μg/m3 in November |
| Main cause of pollution | Vehicle emissions |
Explore related products
$348.54
What You'll Learn
- New Delhi was ranked the world's most polluted capital city in 2021, 2023 and 2024
- India has the world's highest death rate from chronic respiratory diseases and asthma
- The Great Smog of Delhi in 2016 was caused by power plants, stubble burning and vehicles
- Delhi's landfills pollute the air through smoke and odour
- India's rapid industrialisation and poor enforcement of environmental laws have contributed to rising pollution
New Delhi was ranked the world's most polluted capital city in 2021, 2023 and 2024
New Delhi, the capital of India, has been ranked the world's most polluted capital city multiple times in recent years. Notably, it topped the list in 2021, 2023, and 2024, with air pollution levels posing significant health risks to its vast population.
In 2021, an August survey of 7,000 world cities by the US-based Health Effects Institute found New Delhi to have the most harmful air pollution of any major city globally. This poor air quality has had devastating consequences, with an estimated 2.2 million children in Delhi suffering from irreversible lung damage. The situation has led to strong sentiments expressed by India's Supreme Court, highlighting the severity of the issue.
Moving into 2023, New Delhi continued to face alarming levels of air pollution. According to the World Air Quality Report published by IQAir, New Delhi ranked first among 134 capital cities analyzed, with an average annual PM2.5 concentration of 92.7 micrograms per cubic meter of air. This concentration exceeded the World Health Organization's goal by a significant margin, showcasing the urgent need for air quality improvements in the city.
In 2024, New Delhi was once again named the world's most polluted capital city in the World Air Quality Report by IQAir. It recorded an annual PM2.5 level of 108.3 µg/m³, and the city's AQI concentration stood at 169. Additionally, on November 18, 2024, Delhi recorded its worst air quality of the season, with a 24-hour AQI reading of 491, indicating hazardous conditions.
The persistent issue of air pollution in New Delhi has been attributed to various factors, including vehicle emissions, stubble burning, power plants, industrial activities, and poor waste management. These sources of pollution have severe health and environmental impacts, affecting not only the residents of New Delhi but also the surrounding districts.
Pollution's Social Sin: A Collective Moral Failure
You may want to see also
Explore related products
India has the world's highest death rate from chronic respiratory diseases and asthma
India has the highest death rate from chronic respiratory diseases and asthma in the world. According to the World Health Organization, air pollution in India kills about 2 million people annually, making it the fifth-largest cause of death in the country. Notably, the capital, New Delhi, has been ranked as the most polluted capital city in the world.
Chronic respiratory diseases, including chronic obstructive pulmonary disease (COPD) and asthma, have imposed a significant burden on India. COPD and asthma were responsible for 75.6% and 20.0%, respectively, of chronic respiratory disease disability-adjusted life years (DALYs) in India in 2016. The number of COPD cases in India increased from 28.1 million in 1990 to 55.3 million in 2016, with an increase in prevalence from 3.3% to 4.2%. Similarly, there were 37.9 million cases of asthma in India in 2016. The highest DALY rates for both COPD and asthma in 2016 were in the states of Rajasthan and Uttar Pradesh.
The disparity in the burden of chronic respiratory diseases in India is notable. Despite having only 18% of the world's population, India accounts for 32% of global DALYs from these diseases. The less developed states in north India, particularly Rajasthan and Uttar Pradesh, have the highest rates of age-standardised DALYs from COPD and asthma. This disparity highlights the urgent need for targeted policy interventions to address this significant cause of disease burden in India.
The air pollution in New Delhi, the capital of India, has been a significant contributor to the country's high death rate from chronic respiratory diseases and asthma. In August 2022, a survey of 7,000 world cities by the US-based Health Effects Institute found Delhi to have the most harmful air pollution of any major city globally. The air pollution in Delhi has irreversible health impacts, especially on children. Approximately 2.2 million children in Delhi have suffered irreversible lung damage due to poor air quality, and the city's air pollution also affects the surrounding districts.
The sources of air pollution in New Delhi are diverse and complex. Vehicle emissions play a significant role, accounting for 40% of PM2.5 emissions in the city. Other sources include stubble burning, contributing to 38% of the city's pollution in 2023, and power plants, with the Badarpur Thermal Power Station being a notable example until its permanent shutdown in 2018. Animal agriculture also contributes to Delhi's pollution, as farmers have burned their crops in surrounding states since the 1980s. These factors have led to New Delhi consistently ranking as one of the most polluted capital cities globally.
Pollution's Impact: Devastating the Biosphere
You may want to see also
Explore related products
The Great Smog of Delhi in 2016 was caused by power plants, stubble burning and vehicles
New Delhi has consistently been ranked among the most polluted cities globally. In 2024, the 6th Annual World Air Quality Report by IQAir found New Delhi to be the most polluted capital city in the world. The report also identified India as the third most polluted country globally in 2023.
In 2016, New Delhi experienced an extreme air pollution event known as the "Great Smog of Delhi." This event was caused by a combination of power plants, stubble burning, and vehicles, among other factors. Here is a more detailed explanation:
Power Plants: Delhi is home to several coal-fired power plants, including the Badarpur Thermal Power Station, which was a significant contributor to particulate matter pollution in the city. During the Great Smog of 2016, the power plant was temporarily shut down to alleviate air pollution.
Stubble Burning: The practice of stubble burning is common in the agricultural states surrounding Delhi, such as Punjab, Haryana, and Uttar Pradesh. During the autumn and winter months, millions of tons of crop residues are burned, contributing to the smog in Delhi.
Vehicles: Delhi has a high number of vehicles, with around 11 million cars in the city. Vehicle emissions, including those from diesel and petrol engines, contribute significantly to air pollution in Delhi. The increase in vehicle numbers, coupled with the decline in non-polluting modes of public transportation, exacerbates the problem.
Other factors that contributed to the Great Smog of Delhi in 2016 include lit garbage, road dust, factory emissions, and cold weather conditions that trapped the smoke in the city. The levels of PM2.5 and PM10 particulate matter reached extremely high levels, posing significant health risks to the population.
To address the air pollution crisis in Delhi, various measures have been proposed and implemented, including the adoption of electric vehicles, the installation of smog towers, the use of environmentally friendly fuels, and the promotion of public transportation.
Florida's Wildlife Under Threat from Light Pollution
You may want to see also
Explore related products
Delhi's landfills pollute the air through smoke and odour
Delhi, the capital of India, has been ranked as the most polluted city in the world in several surveys and reports. In August 2022, an US-based Health Effects Institute survey of 7,000 cities found Delhi to have the most harmful air pollution of any major city. The city's poor air quality has irreversibly damaged the lungs of 2.2 million children.
Delhi's landfills are a significant contributor to the city's air pollution. There are three major landfills in Delhi: Bhalswa, Ghazipur, and Okhla. These landfills are managed by the local government but are criticized for inadequate waste segregation, overfilling, and unsanitary conditions. The landfills emit smoke and odors from landfill fires, releasing toxic pollutants into the air.
The methane emissions from these landfills are particularly concerning. Methane is a potent greenhouse gas, and its leaks from the landfills have been identified as global hotspots. During Delhi's scorching summer months, the highly flammable methane gas often catches fire, resulting in toxic infernos that send choking fumes into the air. These fires can take weeks to extinguish, further degrading the city's air quality.
The waste pickers who work at these landfills are exposed to significant health and safety risks, including air pollution, hazardous materials, fires, and cave-ins. They also face social and economic challenges, such as stigmatization and harassment and a lack of basic infrastructure services.
Delhi's struggle with landfills and air pollution is complex. The city produces over 11,000 tons of waste per day, overwhelming the capacity of its landfills. Efforts like biomining have been implemented to segregate trash and reclaim resources, but they have not effectively addressed the continuous dumping of new biodegradable waste. The city faces the challenge of promoting sustainable waste management practices while mitigating the environmental and social impacts of its landfills.
Kansas River Pollution: A Troubling Overview
You may want to see also
Explore related products
India's rapid industrialisation and poor enforcement of environmental laws have contributed to rising pollution
India's rapid industrialization and poor enforcement of environmental laws have significantly contributed to its rising pollution levels. The country faces various environmental issues, including air, water, and noise pollution, as well as waste management problems.
India's industrialization has led to a significant increase in air pollution. The burning of fuelwood and biomass, such as dried waste from livestock, is a primary source of energy for many households. The annual crop burning practice in northwest India, north India, and eastern Pakistan releases harmful pollutants into the atmosphere, causing smog and haze issues in cities like Delhi. Vehicle emissions, industrial waste, construction, and power generation also contribute to poor air quality. The country's dependence on coal, oil, and gas makes it the world's third-largest polluter, releasing billions of metric tonnes of carbon emissions annually.
Water pollution is another pressing issue, with India's rivers and lakes often becoming open sewers for residential and industrial waste. Pesticides, herbicides, oil products, and heavy metals in the water kill aquatic life and damage freshwater biodiversity. Approximately 40 million Indians suffer from waterborne diseases like typhoid, cholera, and hepatitis, with nearly 400,000 fatalities each year. Water pollution also damages crops, as infectious bacteria and diseases in irrigation water inhibit their growth.
India's rapid urbanization has resulted in a buildup of heavy metals in the soil of cities like Ghaziabad, leading to health issues for residents. Poor urban planning has also contributed to noise pollution, with side-by-side industrial and residential buildings causing excessive noise in residential areas. The country's high population density has increased the use of automobiles, leading to traffic congestion and slow-moving traffic, which exacerbates air pollution.
While the Indian government has introduced legislative measures and programs to mitigate pollution, enforcement has been challenging due to resource constraints, civil non-compliance, and corruption. The Central Pollution Control Board (CPCB), established in 1974, monitors pollution levels, sets industrial emission standards, and regulates effluent treatment. However, the legislation supporting these bodies has not kept pace with scientific developments, limiting their effectiveness. As a result, India continues to grapple with poor air quality, with cities like New Delhi consistently ranking as the most polluted capital city in the world.
Grand Lake's Pollution Problem: An In-depth Analysis
You may want to see also
Frequently asked questions
New Delhi was ranked the most polluted city in the world in 2023, according to a Swiss-based air-quality monitoring group, IQAir.
New Delhi was ranked the most polluted capital city in the world in 2021, for the fourth consecutive year, according to the World Air Quality Report by IQAir.
The main causes of air pollution in New Delhi include vehicular emissions, industrial emissions, crop fire smoke, and coal combustion. Poor industrial regulation and rapid construction have also been cited as contributing factors.
