(See Chart 1) As the chart shows ... is kept as 90μg/m3,” CPCB’s document says. Given the fact that AQI levels are linked with Graded Response Action Plan (GRAP) to pollution, AQI levels ...

Air Quality Index or AQI measures the concentration of PM 2.5 levels -- fine particles of less than 2.5 microns that can enter the bloodstream and penetrate the lungs and heart - which are linked ...