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This list contains the top 500 cities by PM2.5 annual mean concentration measurement as documented by the World Health Organization covering the period from 2010 to 2022. 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.
PM 2.5 AQI of US monitors, calculated utilizing NowCast, courtesy US EPA PM2.5 AQI map, calculated utilizing NowCast, courtesy US EPA. The PM (particulate matter) NowCast is a weighted average of hourly air monitoring data used by the United States Environmental Protection Agency (USEPA) for real-time reporting of the Air Quality Index (AQI) for PM (PM 10 - particles less than 10 micrometers ...
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]
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 ...
Source: Ministry of Urban Development [5] 2019-2020 The results of the fifth edition of the nationwide annual cleanliness survey, ' Swachh Survekshan 2020 ,' are out and Madhya Pradesh's Indore has yet again made it as India's cleanest city.
AQI or Aqi may refer to: Air quality index; Al-Qaeda in Iraq, a former jihadist organization; Al Qaisumah/Hafr Al Batin Airport, Saudi Arabia (IATA code: AQI)
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Diwali has been proposed as a possible contributor to air pollution because it is celebrated using firecrackers. In 2015, the main Diwali was observed on November 11, the 5-day festival was over November 9 to 13 (orange). The data suggest that the air quality was unhealthy many weeks before and after the festival.