An Air Quality Index (AQI) is used for reporting air quality in a specific location. The AQI is measured on a scale of 0 to 500. The higher the AQI value, the greater the level of air pollution and the greater the health concern.
The AQI considers major pollutants - PM (Coarse: PM-10, Fine: PM-2.5), NO2, SO2, CO, O3, NH3, and Pb - for which short-term (up to 24-hourly averaging period) National Ambient Air Quality Standards are prescribed.
The map tracks the realtime AQI levels in various cities around the world. Hover over the map to see the AQI value of your city.