Air Quality Index calculation parameters

The Air Quality Index (AQI) in India, as standardized by the Central Pollution Control Board (CPCB), considers specific pollutants based on their health impacts and prevalence in urban areas. The AQI includes: (2) Carbon monoxide—YES, it is a criteria pollutant for AQI. (3) Nitrogen dioxide—YES, it is a criteria pollutant for AQI. (4) Sulfur dioxide—YES, it is a criteria pollutant for AQI. (1) Carbon dioxide—NO, CO2 is not included in AQI calculation though it is a greenhouse gas, as AQI focuses on local air quality and health impacts. (5) Methane—NO, methane is not part of the standard AQI calculation. The standard AQI includes: PM10, PM2.5, NO2, SO2, CO, O3, and lead. Therefore, only 2, 3, and 4 are correct. > AQI: CO, NO2, SO2 included; CO2, CH4 excluded. Answer: (b).