World Air Quality Report [IQAIR]

By : Neha Dhyani

Updated : May 5, 2022, 6:32

The World Air Quality Report [IQAIR] provides you with an overview of the global air quality situation. It is a practical survey of 6475 cities in 117 countries, regions, and territories worldwide.

It works as an awareness cycle that engages, educates, and inspires governments, citizens, businesses, and collaborationism to create healthier communities and cities.

World Air Quality Report [IQAIR] Basics

  • The annual World Air Quality Report published by IQAir compiles and compares millions of PM2.5 measurements collected in thousands of locations around the world
  • The data is collected from a variety of regulatory and non-regulatory ground-based air quality monitors throughout the year
  • Even though many parts of the world still lack access to publicly available air quality data, global air quality data increased in 2021
  • The concentration of PM2.5 in New Delhi increased by 14.6% in 2021 to 96.4 Ig/m3, up from 84 Ig/m3 in 2020

World Air Quality Report [IQAIR] Standard Metric

The standard metric for the World Air Quality Report [IQAIR] was PM2.5 concentrations in micrograms per cubic meter (g/m3).

PM2.5 is a fine aerosol particle 2.5 microns or smaller in diameter, is one of six routinely measured criteria air pollutants, and is widely regarded as the most dangerous to human health due to its prevalence in the environment and wide range of health effects.

PM2.5 is produced by a variety of sources and can vary in chemical composition and physical properties, and characteristics. Sulfates, nitrates, black carbon, and ammonium are common chemical constituents of PM2.5. Internal combustion engines are the most common man-made sources.

Power generation, industrial processes, agricultural processes, construction, and residential wood are all examples of wood-based processes, as well as coal combustion. Dust storms, sandstorms, and thunderstorms are the most common natural sources of PM2.5 wildfires.

World Air Quality Report [IQAIR] 2021

  • According to IQAir Report 2021, New Delhi has been named the world's most polluted capital city for the second year in a row
  • The most polluted capital cities are: New Delhi, Dhaka (Bangladesh), N'Djamena (Chad), Dushanbe (Tajikistan), and Muscat (Oman)
  • In the meantime, Bhiwadi was India's most polluted city, followed by Ghaziabad, Delhi, and Jaunpur

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World Air Quality Report [IQAIR] Significance

  • Air pollution is a concern that has been increasing steadily over the years
  • 7 million deaths each year are a result of air pollution
  • Diseases such as asthma, cancer, and even heart-related diseases are usually a result of air pollution
  • USD 8 billion, which makes up 3 to 4% of the Gross World Product, is estimated to be the daily economic cost of air pollution
  • Specifically, during times of the COVID-19 pandemic, PM2.5 increases the risk of contraction of the virus and can cause the symptoms to be severe
  • The World Air Quality Report by IQAir works as an awareness cycle that engages, educates, and inspires governments, citizens, businesses, and collaborationism to create healthier communities and cities
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World Air Quality Report [IQAIR] - Awareness and Responsibilities

  • Increase public transportation and power through the use of clean and renewable energy sources
  • Create more infrastructure to encourage pedestrian and bicycle traffic
  • Strengthen and enforce vehicle and industry emission limits
  • Adopt new air quality guidelines based on the World Health Organization's Air Quality Guidelines for 2021
  • Use forest management strategies to keep wildfires at bay
  • Prohibit the use of agricultural and biomass fuels
  • Create novel civic strategies to improve air quality
  • Reduce your energy consumption
  • Recycle, upcycle, and buy less to reduce waste

The World Air Quality Report by IQAir provides you with an overview of the global air quality situation. The data presented is collected from a variety of regulatory and non-regulatory ground-based air quality monitors throughout the year.

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FAQs on World Air Quality Report [IQAIR]

Q.1. According to the World Air Quality Report [IQAIR], which is the most populated capital for the second row?

The most populated capital for the second row, according to the World Air Quality Report [IQAIR], is New Delhi

Q.2. Which countries in Central and South Asia experienced the worst air quality according to the World Air Quality Report [IQAIR]?

India and Pakistan are the countries that have experienced the worst air quality according to the World Air Quality Report [IQAIR].

Q.3. Which are the six capital countries that reported an average annual PM 2.5 concentration above 50 µg/m3 according to the World Air Quality Report [IQAIR]?

According to the World Air Quality Report [IQAIR], the six-country capitals that reported an average annual PM 2.5 concentration above 50 µg/m3 are Dhaka (Bangladesh), N'Djamena (Chad), Dushanbe (Tajikistan), Muscat (Oman), and Kathmandu (Nepal).

Q.4. Name the six metro cities except for Chennai that saw a rise in air pollution levels last year according to the World Air Quality Report [IQAIR]?

According to the World Air Quality Report [IQAIR], the six metro cities that saw a rise in air pollution levels last year are Delhi, Kolkata, Mumbai, Hyderabad, Bengaluru, and Chennai.

Q.5. Which cities in India met the WHO Air Quality Guidelines, and what does the World Air Quality Report [IQAIR] state regarding this?

Unfortunately, no cities in India met the WHO Air Quality Guidelines. As a result, India, along with Pakistan, experienced the worst air quality according to the World Air Quality Report [IQAIR].