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  2. List of most-polluted cities by particulate matter concentration

    en.wikipedia.org/wiki/List_of_most-polluted...

    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.

  3. Air pollution in India - Wikipedia

    en.wikipedia.org/wiki/Air_pollution_in_India

    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]

  4. List of cleanest cities in India - Wikipedia

    en.wikipedia.org/wiki/List_of_cleanest_cities_in...

    The Ministry of Urban Development, Government of India, and the Central Pollution Control Board (CPCB) of India, annually publish National City Rating under the Swachh Bharat Abhiyan scheme.

  5. Air quality index - Wikipedia

    en.wikipedia.org/wiki/Air_quality_index

    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 ...

  6. List of countries by air pollution - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_air...

    The following list of countries by air pollution sorts the countries of the world according to their average measured concentration of particulate matter in micrograms per cubic meter (μg/m 3).

  7. NowCast (air quality index) - Wikipedia

    en.wikipedia.org/wiki/NowCast_(air_quality_index)

    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 ...

  8. AQI - Wikipedia

    en.wikipedia.org/wiki/AQI

    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)

  9. Floods in Lucknow - Wikipedia

    en.wikipedia.org/wiki/Floods_in_Lucknow

    Lucknow is a city in the state of Uttar Pradesh, India, located on the banks of the Gomti River, a tributary of the Ganges River.Located within a humid subtropical climate, the city has a history of being affected by floods caused by heavy rainfall, river overflow, and breaches in the embankments.