National Ambient Air Quality Standards

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  1. Ambient air quality refers to the condition or quality of air surrounding us in the outdoors
  2. National Ambient Air Quality Standards are the standards for ambient air quality set by the Central Pollution Control Board (CPCB) that is applicable nationwide
  3. The CPCB has been conferred this power by the Air (Prevention and Control of Pollution) Act, 1981
  4. A new National Air Quality Index (AQI) has been launched in October 2014 to disseminate information on air quality in an easily understandable form for the general public
  5. The measurement of air quality is based on eight pollutants, namely, PM10, PM2.5, NO2, SO2, CO, O3, NH3, and Pb
  6. National Ambient Air Quality Standards are prescribed for all of these pollutants
  7. The 2005 World Health Organization’s “WHO Air quality guidelines” offer global guidance on thresholds and limits for 4 key air pollutants that pose health risks – particulate matter (PM), ozone (O3), nitrogen dioxide (NO2) and sulfur dioxide (SO2)