World Air Quality Report 2023

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Source-This post on World Air Quality Report 2023 is based on the article “Delhi World’s Most Polluted Capital Again, India Has 3rd Worst Air Quality: Report” published in “ABP News” on 19th MARCH 2024.

Why in the News?

According to the World Air Quality Report 2023, Delhi was identified as the city with the poorest air quality.

About World Air Quality Report 2023

1. Published by– Swiss organisation IQAir.

2. Data collection – The data encompassed information from 7,812 sites across 134 countries, regions, and territories.

Key findings

1. India ranked third in terms of air quality, with an average annual concentration of particulate matter 2.5 (PM2.5) at 54.4 micrograms per cubic meter.

2. India ranked lower than only two of its neighboring countries, Bangladesh and Pakistan.

3. Bangladesh had the highest pollution level globally, with an average PM2.5 concentration of 79.9 micrograms per cubic meter, while Pakistan ranked second with 73.7.

4. It also named Delhi as the world’s most polluted capital city for the fourth year in a row.

5. Begusarai in Bihar was identified as the most polluted metropolitan area globally.

6. India has ten of the top 11 most polluted cities globally, with the remaining one being Lahore in Pakistan.

7. 96 percent of India’s population faces PM2.5 levels that exceed the WHO annual guideline by more than seven times.

Particulate Matter (PM)

1. Particulate matter, or PM, is the term for particles found in the air, including dust, dirt, soot, smoke, and liquid droplets.

2. They remain suspended in the air for long periods of time.

3. Some particles are visible as soot or smoke due to their size or color, while others are so tiny that they can only be seen with an electron microscope.

Read moreParticulate Matter (PM)

UPSC Syllabus- Environment/Reports & Indices

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