The highest AQ index in South Carolina (as of 9:00 EDT) is currently the Charleston area. Particle Pollution (PM2.5) is measuring at 72 (Moderate). This means air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Over the next few days, the highest Ozone (OZONE) will be in the Greenville-Spartanburg area. It is forecasted to be Moderate, meaning air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
As of Monday mid-afternoon, all forecast zones are trending Code Green for ground-level ozone concentration for the rest of the day. The oppressive heat in South Carolina will continue on Tuesday as an upper-level ridge persists over the southern CONUS. Clear to mostly sunny skies are expected, and while convection coverage across the state should be limited, a few isolated thunderstorms along the coast during the afternoon cannot be counted out. Before considering the high humidity, temperatures are forecast with highs in the mid to upper 90s and lows in the mid to upper 70s. Winds could vary with areas south of I-20 having a light westerly flow with speeds around 5-8 mph and areas north of I-20 leaning more toward light and variable. These variables along with the mostly stagnant air mass support an increase in ozone production; therefore, the ozone forecast for Tuesday projects the Upstate to peak at CODE YELLOW and all other zones at CODE GREEN.
| Range | 0 - 50 | 51 - 100 | 101 - 150 | 151 - 200 | 201 - 300 | 301 - 500 |
| Color | ||||||
| Category | Good | Moderate | Unhealthy for Sensitive Groups | Unhealthy | Very Unhealthy | Hazardous |
Last Updated 18 minutes ago
Below is a list of counties in South Carolina. Click on any county below and you'll get a list of cities where we provide AQ index forecasts.