Skip to main content

New Delhi And Kolkata Are The Two Most Polluted Cities In The World

New Delhi And Kolkata Are The Two Most Polluted Cities In The World

 New Delhi and Kolkata are the two most polluted cities in the world in terms of PM2.5 levels, according to a report released by Health Effects Institutes (HEI) based in the United States. The study ranked cities based on two major air pollutants found — fine particulate matter (PM2.5) and nitrogen dioxide (NO2).

According to the latest State of Global Air report on air quality and health in cities, most global cities far exceed World Health Organisation's (WHO) air pollution guidelines. The report, 'Air Quality and Health in Cities', used data from 2010 to 2019. Earlier, the WHO issued guidelines that cut acceptable annual exposure of small and hazardous airborne particles known as PM2.5 to 5 micrograms per cubic meter of air. 

According to the report, Shanghai city in China and Moscow city in Russia are the two most polluted cities in terms of exposure to nitrogen dioxide (NO2).

Which cities are the most polluted in terms of PM2.5 levels?

Delhi (India), Kolkata (India), Kano (Nigeria), Lima (Peru), Dhaka (Bangladesh), Jakarta (Indonesia), Lagos (Nigeria), Karachi (Pakistan), Beijing (China), and Accra (Ghana) are the top 10 most polluted cities in terms of exposure to PM2.5.

Exposure to PM2.5 pollution is higher in cities located in low and middle-income countries. Exposure to PM2.5 often causes respiratory problems. 

Which cities are the most polluted in terms of NO2 levels?

Shanghai (China), Moscow (Russia), Tehran (Iran), St. Petersburg (Russia), Beijing (China), Cairo (Egypt), Ashgabat (Turkmenistan), Minsk (Belarus), Istanbul (Turkey), and Ho Chi Minh City (Vietnam) are the top 10 most polluted cities in terms of exposure to NO2.

Exposure to NO2 pollution is higher in cities located in high-income and low-middle-income countries.

Reportedly, the highest population-weighted annual average PM2.5 exposure in 2019 was in India’s capital, Delhi, at 110 μg/m3, followed by Kolkata at 84 μg/m3.


Labels:

Comments

Post a Comment

Popular posts from this blog

Bangladesh Military Expresses Discontent Over Chinese Weapons; Reports 'Sub-Standard' and Faulty Parts

  Bangladesh, a traditional buyer of Chinese military equipment, has raised grievances with Beijing regarding the delivery of defective components and technical malfunctions in its imported military hardware. This issue is not unique to Bangladesh, as other nations like Myanmar have also encountered problems with Chinese fighter jets, according to an ET report. Experts in the Chinese defense industry argue that Beijing lacks the expertise to manufacture highly sophisticated military hardware and is not yet considered a top-tier producer of modern defense equipment. They claim that much of China's weapon systems are based on outdated technology copied from the West. Developing countries often opt for Chinese weapons due to their lower cost compared to similar systems from Western countries. China sells arms through state-run export organizations like the Aviation Industry Corporation of China (AVIC), NORINCO, and CVIC. Sources familiar with the matter told ET that the Bangladesh mil...
Post a Comment
Read more

India raises concern over North Korea missile tests at UNSC, 2nd time in weeks

 As the United Nations Security Council (UNSC) met for the second time in a month over the missile tests in North Korea, India yet again raised concerns over the impact on peace and security in the region. New Delhi has also reiterated its support for the denuclearisation in the Korean peninsula, underlining that it is “in collective interest” while also stressing that “dialogue and diplomacy” are preferred means to resolve the issue. The latest intercontinental ballistic missile (ICBM) test by the DPRK (Democratic People's Republic of Korea) has again sparked tensions between nations with the United States and its allies calling for the country to limit its programs even as Russia and China back Pyongyang amid the likelihood of new sanctions. In the latest UNSC meeting, the United States, Britain, France, and India were among 14 nations to "strongly condemn" the latest North Korea launch on Friday, which was reported to have landed about 125 miles (200 kilometers) from ...
Post a Comment
Read more

North Korea Celebrates 'New Era of a Space Power' after Satellite Launch

  In a significant development, North Korea recently celebrated what it termed a 'new era of a space power' following the successful launch of a satellite. The reclusive nation's space endeavors have long been a source of international concern and scrutiny, raising questions about its technological capabilities and intentions. This latest achievement has reignited debates and speculation about North Korea's space ambitions. The satellite launch, conducted by North Korea's space agency, comes amid a backdrop of geopolitical tensions and global attention on the Korean Peninsula. The state media hailed the event as a major milestone, highlighting the successful deployment of the satellite into orbit. However, it is important to note that the international community remains skeptical, with concerns over the dual-use nature of space technology that could potentially be applied to ballistic missile systems. North Korea's pursuit of space capabilities has been a conten...
Post a Comment
Read more