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South Carolina Ground-level Ozone Forecast

For 7/20/2018

[ The forecast is updated daily by 3:30 pm EDT. ]

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Ground-level ozone across the state on this Thursday afternoon is on track to peak in code GREEN. On Friday, a weak frontal boundary will linger in the area. This, along with ample moisture and a disturbance aloft will bring mixed cloud cover and decent chance of showers and thunderstorms to a large part of the state. This should result in ozone concentrations similar to Thursday, e.g., code GREEN. The exception will be the Upstate zone, which will be in slightly drier air and subject to more urban pluming from upstream areas. Thus, code YELLOW is expected in the Upstate on Friday.
County * Color Code AQI
Abbeville Moderate (Yellow) 54
Aiken Good (Green) 44
Anderson Moderate (Yellow) 54
Barnwell Good (Green) 44
Berkeley Good (Green) 35
Calhoun Good (Green) 44
Charleston Good (Green) 35
Cherokee Moderate (Yellow) 54
Chester Good (Green) 49
Chesterfield Good (Green) 40
Darlington Good (Green) 40
Dillon Good (Green) 40
Dorchester Good (Green) 35
Edgefield Good (Green) 44
Fairfield Good (Green) 44
Florence Good (Green) 40
Greenville Moderate (Yellow) 54
Greenwood Moderate (Yellow) 54
Kershaw Good (Green) 44
Lancaster Good (Green) 49
Laurens Moderate (Yellow) 54
Lee Good (Green) 40
Lexington Good (Green) 44
Marlboro Good (Green) 40
McCormick Good (Green) 44
Newberry Good (Green) 44
Oconee Moderate (Yellow) 54
Pickens Moderate (Yellow) 54
Richland Good (Green) 44
Saluda Good (Green) 44
Spartanburg Moderate (Yellow) 54
Sumter Good (Green) 44
Union Moderate (Yellow) 54
York Good (Green) 49
GA-Columbia Good (Green) 44
GA-Richmond Good (Green) 44
* Ozone forecasts are not issued for counties not listed in this table.
AQI Color Code (Value) Cautionary Statement

Good
(0-50)

No health effects are expected.

Moderate
(51-100)

Unusually sensitive people should consider limiting prolonged outdoor exertion.

Unhealthy for Sensitive Groups
(101-150)

The following groups should limit prolonged outdoor exertion:

  • People with lung disease, such as asthma
  • Children and older adults
  • People who are active outdoors

Unhealthy
(151-200)

The following groups should avoid prolonged outdoor exertion:

  • People with lung disease, such as asthma
  • Children and older adults
  • People who are active outdoors

Everyone else should limit prolonged outdoor exertion.

Very Unhealthy
(200+)

The following groups should avoid all outdoor exertion:

  • People with lung disease, such as asthma
  • Children and older adults
  • People who are active outdoors

Everyone else should limit outdoor exertion.