Categories: International

WHO revises air quality norms for first time since 2005

The World Health Organisation (WHO) has announced a tight revision in its air quality guidelines (AQG). This is the first revision in the global air quality by WHO since 2005. In the new guidelines, WHO has lowered the acceptable exposure levels to key pollutants, including ozone, nitrogen dioxide, sulfur dioxide, carbon monoxide and particulate matter (PM).

Buy Prime Test Series for all Banking, SSC, Insurance & other exams

Under the new guidelines:

  • WHO has lowered acceptable thresholds for several pollutants, including PM 2.5. Now, PM 2.5 concentrations must remain below 15µg/m³.
  • According to the new limits, average annual PM2.5 concentrations should not be higher than 5 micrograms per cubic meter.
  • Air pollution kills at least 7 million people prematurely each year. The revised guidelines encourage countries to slash fossil fuel emissions.
  • These guidelines are not legally binding on countries. The reduced level of air pollution will improve the health of people.

India Scenario:

  • India continues to remain one of the most polluted countries in the world. Air pollution has become the main threat to health in many countries.
  • The average concentration of PM2.5 in 2020 in New Delhi was 17 times higher than the recommended levels.
  • The pollution level is also higher than the recommended levels in Mumbai, Chennai, and Kolkata.

Find More International News

Sumit Arora

As a team lead and current affairs writer at Adda247, my role involves researching and creating informative and engaging content aimed at helping candidates prepare for national and state-level competitive government exams. I specialize in delivering insightful articles that keep aspirants updated on the latest current affairs trends and developments. My primary focus is on educational excellence, ensuring that our readers are well-prepared and informed to face their exams with confidence. Through meticulously crafted content, I aim to guide and support candidates in their journey toward success.

Recent Posts

GK Quiz on Dr. B.R. Ambedkar, Questions and Answers

Dr. Bhimrao Ramji Ambedkar, also known as the "Father of the Indian Constitution," was a…

2 hours ago

List of RBI Governors of India 1935 to 2024

The RBI Governor is the Chief Executive Officer of the Central Bank of India and the…

2 hours ago

Chaudhary Charan Singh Biography- Age, Political Career, Contributions and Awards

Chaudhary Charan Singh (23 December 1902 – 29 May 1987) was a prominent Indian politician…

3 hours ago

What is the Old Name of Rajasthan?

Rajasthan is a state in north-western India, known for its rich history, beautiful palaces, forts…

3 hours ago

PV Sindhu Biography- Age, Marriage, Career, Records and Net Worth

PV Sindhu is one of India's most celebrated badminton players, known for her exceptional skills,…

4 hours ago

Top-10 Most Expensive Woods in the World, Check the List

Wood is a natural material used in furniture, tools and decoration. It comes from trees…

4 hours ago