Air Quality & Pollution - Global Air Pollution |…

The Air Pollution Crisis

Air pollution represents a significant and largely unseen threat to global health, ranking as the world’s fourth leading cause of death. Each year, it claims the lives of approximately 7 million people – more than AIDS, malaria, and tuberculosis combined.

This pervasive issue affects nearly all of humanity, with 99% of the global population breathing air that exceeds established guidelines set by the World Health Organization (WHO). The economic impact is staggering, estimated at $8.1 trillion annually, representing 6.1% of global GDP.

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Frequently asked questions

How many people die from air pollution?

Approximately 7 million people die each year due to exposure to air pollution, making it the fourth leading cause of death globally after high blood pressure, tobacco use, and poor diet.

Which city has the worst air pollution?

Delhi, India, currently holds the title for the world’s most polluted city, with an average PM2.5 concentration of 110.2 μg/m³, which is a staggering 22 times higher than WHO guidelines.

What is PM2.5?

PM2.5 refers to particulate matter smaller than 2.5 micrometers in diameter – these tiny particles can penetrate deep into our lungs and even enter the bloodstream, posing serious health risks.

Why is air quality so bad in India?

Several factors contribute to Delhi’s poor air quality, including vehicle emissions, coal-fired power plants, construction dust, agricultural burning, and geographic conditions that trap pollutants – all exacerbated by rapid development without adequate emission controls.

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