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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."
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 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).
In 2022, Bangladesh was ranked as having the fifth-worst air quality, and India was eighth. About 20% of premature deaths in Bangladesh are attributed to air pollution, and related healthcare ...
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 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 ...
Air quality or ambient/outdoor air pollution is represented by the annual mean concentration of particulate matter PM 10 (particles smaller than 10 microns) and PM 2.5 (particles smaller than 2.5 microns, about 25 to 100 times thinner than a human hair).
Air quality index of 2,553 and PM2.5 concentration of 947 μg per cubic metre reached in Multan on 8 November. The 2024 India–Pakistan smog is a severe record-breaking air pollution event that affected Eastern and Northern Pakistan and North India in November 2024, primarily in the Pakistani city of Lahore and Indian city of Delhi .