Environment: Air pollution caused by PM 2.5 (fine particulate matter) claimed as many as 54,000 lives in Delhi in 2020, according to a Greenpeace Southeast Asia analysis of cost to the economy due to air pollution. Six Indian cities including Delhi, Mumbai, Bengaluru, Chennai, Hyderabad, and Lucknow have featured in the global study.
According to the report, pollution levels remained almost six times above the prescribed World Health Organization (WHO) limit in Delhi, leading to an estimated air pollution-related economic loss of INR 58,895 crore. This amounts to 13 percent of the national capital’s annual gross domestic product (GDP).
The damage is ‘equally worrying’ in other Indian cities, said the report, released on 18th February 2021.
“An estimated 25,000 avoidable deaths in Mumbai in 2020 have been attributed to air pollution. Bengaluru, Chennai, and Hyderabad estimated an approximate 12,000, 11,000, and 11,000 avoidable deaths, respectively, due to polluted air,” it said.
Globally, approximately 1,60,000 deaths have been attributed to PM 2.5 air pollution in the five most populous cities—Delhi, Mexico City, Sao Paulo, Shanghai, and Tokyo.
PM 2.5 refers to fine particulate matter smaller than 2.5 micrometres in diameter. Exposure to PM 2.5 is considered the most important environmental risk factor for deaths globally, and was attributed to 4.2 million premature deaths in 2015, the study said.
A cost estimator—an online tool that estimates the real-time health impact and economic cost from PM 2.5 air pollution—was deployed in major cities in a collaboration between Greenpeace Southeast Asia, IQAir, and the Centre for Research on Energy and Clean Air (CREA). Using real-time ground-level PM 2.5 measurements collated in IQAir’s database, the algorithm applies scientific risk models in combination with population and public health data to estimate the health and economic costs of air pollution exposure.
Read this explainer to learn more about India’s air pollution problem.