Yulchon-myeon, Jeonnam PM2.5 (fine particulate matter) AQI is 57 - Yulchon-myeon, Jeonnam PM10 (respirable particulate matter) AQI is 20 - Yulchon-myeon, Jeonnam NO2 (nitrogen dioxide) AQI is 7 - Yulchon-myeon, Jeonnam SO2 (sulfur dioxide) AQI is 3 - Yulchon-myeon, Jeonnam O3 (ozone) AQI is 23 - Yulchon-myeon, Jeonnam CO (carbon monoxide) AQI is 3 -