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Air pollution is a particularly big problem in emerging and developing countries, where global environmental standards often cannot be met. The data in this list refers only to outdoor air quality and not indoor air quality, which caused an additional two million premature deaths in 2019. [1]
The air quality index of New Delhi (capital of India) dropped into the severe category in November 2024 according to SAFAR, India’s main environmental agency. [54] On November 18, "Swiss group IQAir ranks New Delhi as the world's most polluted city with air quality at a 'hazardous' 1,081."
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). [1 ...
Pakistan remained one of the world's three smoggiest countries in 2023, as Bangladesh and India replaced Chad and Iran, with particulate matter about 15 times the level recommended by the World ...
The air quality in India's capital worsened on Monday, with pollution levels rising to the highest this year, as low cool-season winds and more burning of stubble in neighbouring states combined ...
India Ranking/Total Countries Source Notes World Happiness Report: ... World Resources Institute [66] Air Quality – average PM 2.5 concentration: 84 / 92: WHO [67]
List of countries by economic complexity; List of countries by external debt; List of countries by long-term unemployment rate; List of countries by net international investment position per capita
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.