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When the air quality in Delhi on 18 November 2021 slipped into the "severe" category with an AQI of 362, the Supreme Court of India reprimanded the central and state governments and asked them to take strict measures to reduce pollution in Delhi and the NCR region. [23]
The air quality index in New Delhi reached 351 on Friday, putting it well outside the "good" range. AQI is a measure of five major air pollutants and is considered “good” when under 50.
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 ...
Delhi smog visible from space as air quality ranked ‘severe’ for second day running. Arpan Rai. November 14, 2024 at 6:34 AM. ... a different metric to map air quality across the world.
The most commonly used air quality index in the UK is the Daily Air Quality Index recommended by the Committee on the Medical Effects of Air Pollutants (COMEAP). [39] This index has ten points, which are further grouped into four bands: low, moderate, high and very high. Each of the bands comes with advice for at-risk groups and the general ...
According to Swiss Air Quality Index monitoring group IQAir, the concentration of PM2.5 in the air increased to 737 on Monday, about 150 times the WHO limit, making Delhi, home to more than 30 ...
Air Quality Index (AQI) is a number used to communicate the level of pollution in the air and it essentially tells you the level of pollution in the air in a given city on a given day. The AQI of Delhi was placed under the "severe-plus category" when it touched 574, by the System of Air Quality and Weather Forecasting And Research. [49]
Air crisis and pollution level in Delhi are here to stay for the next two to three weeks, officials warn Delhi’s air quality ‘severe’ as breathing air akin to smoking ‘25-30 cigarettes a ...