A recent worldwide survey discovered that 22 out of the 30 most polluted cities in the world are in India.
Air Pollution – A Global Health Concern
The poor air quality of India has become very challenging. Hazardous air quality in countries like India leads to high death rates. In the present time, with the emergence of rapid globalization and urbanization in developing nations, the countries are facing severe health issues due to ambient air pollution. Indian urban cities are becoming increasingly congested because people are migrating to cities for education, employment and better quality of life. The increasing population has led to a rise in pollution levels due to the use of private cars, cutting of trees to widen roads, construction of new housing and public infrastructure to accommodate migrant workers.
Air Pollution in India
- Air pollution was the leading risk factor for premature death in India in 2019, accounting for nearly 18% of all deaths. 1.67 million deaths due to air pollution in India in 2019.
- Considered separately, ambient particulate matter (PM2.5) ranked as the 4th leading risk factor in India, and indoor / household air pollution (HAP) ranked 6th.
- As part of a worldwide survey by Swiss organisation IQAir, it was discovered that 22 out of the 30 most polluted cities in the world were in India.
- India recorded the highest annual average PM 2.5 concentration exposure in the world in 2019, as per the State of Global Air 2020 (SOGA 2020) report. India was followed by Nepal, Niger, Qatar and Nigeria in high PM 2.5 exposures.
- 100% of India’s population lives in areas where PM2.5 levels are above the WHO guideline for healthy air (10 μg/m3).
- There are 164 deaths per 100,000 people attributable to air pollution in India compared with 86 deaths globally.
- India is also among the top ten countries with highest Ozone (O3) exposure in 2019. O3 is a major respiratory irritant which is not released directly into the air but is formed in a complex chemical interaction between nitrogen oxides (NOx) and volatile organic compounds (VOCs) in the presence of sunlight.
- As per SOGA report, Percentage of Deaths (by Cause) Attributed to Air Pollution in India in 2019 were as follows:
Health risks from indoor air pollution are likely to be more in cities in developing countries like India, especially where risks is related with solid fuel combustion coincide with risk associated with modern buildings. Daily exposure to many chemicals, most of which are present indoors, may contribute to increasing prevalence of asthma, autism, childhood cancer, medically unexplained symptoms, and perhaps other illnesses. The only good news for India though is that it has managed to reduce the number of people exposed to household air pollution. China reduced the percentage of its population exposed to household air pollution from 54% to 36%, while India reduced its percentage from 73% to 61% over the last decade. We need to take measures to silence this silent killer.