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South Carolina Ground-level Ozone Forecast

For 9/20/2017

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

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Ozone concentrations are headed towards peaks of code YELLOW across the CSRA, Upstate, and Catawba regions on this Tuesday afternoon with code green concentrations experienced elsewhere. For Wednesday, we expect an overall ramping in ozone concentrations for most zones as high pressure builds over the southern Appalachians. A light southwesterly flow develops and brings in dirtier sourcing and will work with sufficient sunlight to nudge the Upstate and CSRA regions once again into the moderate YELLOW category. All other zones are expected to hold in upper reaches of code GREEN.
County * Color Code AQI
Abbeville Moderate (Yellow) 58
Aiken Moderate (Yellow) 61
Anderson Moderate (Yellow) 58
Barnwell Moderate (Yellow) 61
Berkeley Good (Green) 47
Calhoun Good (Green) 48
Charleston Good (Green) 47
Cherokee Moderate (Yellow) 58
Chester Good (Green) 50
Chesterfield Good (Green) 44
Darlington Good (Green) 44
Dillon Good (Green) 44
Dorchester Good (Green) 47
Edgefield Moderate (Yellow) 61
Fairfield Good (Green) 48
Florence Good (Green) 44
Greenville Moderate (Yellow) 58
Greenwood Moderate (Yellow) 58
Kershaw Good (Green) 48
Lancaster Good (Green) 50
Laurens Moderate (Yellow) 58
Lee Good (Green) 44
Lexington Good (Green) 48
Marlboro Good (Green) 44
McCormick Moderate (Yellow) 61
Newberry Good (Green) 48
Oconee Moderate (Yellow) 58
Pickens Moderate (Yellow) 58
Richland Good (Green) 48
Saluda Good (Green) 48
Spartanburg Moderate (Yellow) 58
Sumter Good (Green) 48
Union Moderate (Yellow) 58
York Good (Green) 50
GA-Columbia Moderate (Yellow) 61
GA-Richmond Moderate (Yellow) 61
* 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.