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In 2019, India launched 'The National Clean Air Programme' with tentative national target of 20%-30% reduction in PM2.5 and PM10 concentrations by 2024, considering 2017 as the base year for comparison. It will be rolled out in 102 cities that are considered to have air quality worse than the National Ambient Air Quality Standards. [15]
India's capital was left gasping this week as air pollution smog reduced visibility to near zero and raised air quality levels more than 130 times safe limits.
During the COVID-19 pandemic lockdown in India, the air quality in Delhi significantly improved. [7] [8] India's Ministry of Earth Sciences published a research paper in October 2018 attributing almost 41% of air pollution to vehicular emissions, 21.5% to dust and 18% to industrial emissions. [9]
The January 2024 version of the WHO database contains results of ambient (outdoor) air pollution monitoring from almost 5,390 towns and cities in 63 countries. Air quality in the database is represented by the annual mean concentration of particulate matter ( PM10 and PM2.5, i.e. particles smaller than 10 or 2.5 micrometers, respectively).
The vast majority of these cities — 83 — were in India and all exceeded the World Health Organization’s air quality guidelines by more than 10 times, according to the report by IQAir, which ...
India's New Delhi was the worst-performing capital city, at 92.7 micrograms. China also saw PM2.5 rise 6.3% to 32.5 micrograms last year, after five consecutive annual declines.
According to the Central Pollution Control Board (CPCB) India, in 2015 it conducted a survey of the least polluted cities in India as well, ranked based on air quality. Among the least-polluted cities are Pathanamthitta, Mangalore, Wayanad, Hassan, and Palakkad. The table below shows the ranking of these cities as per the PM10 content in the air.
The Golden State has the worst air quality of any state in the US, according to a new report from the United Health Foundation. The report measured air quality by the average person's exposure ...