Air Quality Index (AQI)

Air Quality Index (AQI) mind map
  Context
    Delhi's air quality
      Plummets to 'severe' category
      AQI over 400
      Reference
        Indian Express
  Graded Response Action Plan (GRAP) activation
    Stage 3 initiated
  AQI essentials
    Colour coded index
    Launched in 2014
    Swachh Bharat campaign
  Objective
    Public and government communication
    Current and future air pollution levels
  Represented pollutants
    6 to 8 pollutants
    Including Ozone (O3), Particulate Matter (PM 10 and PM 2.5), Carbon Monoxide (CO), Sulphur Dioxide (SO2), Nitrogen Dioxide (NO2)
  Impact on human health
    Weight given to each pollutant
  AQI transformation
    Air quality data to single number
    Nomenclature and colour
  Categories
    Good (0-50)
    Satisfactory (50-100)
    Moderately polluted (100-200)
    Poor (200-300)
    Very poor (300-400)
    Severe (400-500)
  Health effects correlation
    Higher AQI, worse air quality
    Adverse effects on larger population
  GRAP specifics
    Emergency anti-pollution measures
    For Delhi-National Capital Region (NCR)
    Notified in 2017

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