AQI Calculator AQI Calculators AQI to Concentration Concentration to AQI AQI to Concentration Calculator DIRECTIONS: Select a pollutant, then enter the AQI value. Click on “Calculate” to see the results. Select a Pollutant PM2.5 - Particulate <2.5 microns (24hr avg)PM10 - Particulate <10 microns (24hr avg)CO - Carbon Monoxide (8hr avg)SO2 - Sulfur Dioxide (1hr avg)SO2 - Sulfur Dioxide (24hr avg)O3 - Ozone (8hr avg)O3 - Ozone (1hr avg)NO2 - Nitrogen Dioxide (1hr avg) Enter the AQI CalculateReset Concentration Units AQI Category Sensitive Groups Health Effects Statements Cautionary Statements