Skip to content

South Carolina Ground-level Ozone Forecast

For 9/21/2017

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

Your Javascript is turned off. All sections will be displayed and the following options will not impact what is shown.

Select what you want displayed:

As of the mid-afternoon hours on Wednesday, ground level ozone concentrations had spiked well into the yellow category over the Upstate and CSRA. Yellow criteria conditions were also being reported over the Midlands, while light southwest winds were keeping most of the Charlotte pollutants out of the Catawba zone. On Thursday, a broad area of high pressure and seasonably dry conditions are expected to yield yellow category conditions for the Upstate, CSRA and York zones. The Midlands, Pee Dee and Trident zones are predicted to hold in the green category for tomorrow.
County * Color Code AQI
Abbeville Moderate (Yellow) 77
Aiken Moderate (Yellow) 77
Anderson Moderate (Yellow) 77
Barnwell Moderate (Yellow) 77
Berkeley Good (Green) 40
Calhoun Good (Green) 48
Charleston Good (Green) 40
Cherokee Moderate (Yellow) 77
Chester Moderate (Yellow) 51
Chesterfield Good (Green) 50
Darlington Good (Green) 50
Dillon Good (Green) 50
Dorchester Good (Green) 40
Edgefield Moderate (Yellow) 77
Fairfield Good (Green) 48
Florence Good (Green) 50
Greenville Moderate (Yellow) 77
Greenwood Moderate (Yellow) 77
Kershaw Good (Green) 48
Lancaster Moderate (Yellow) 51
Laurens Moderate (Yellow) 77
Lee Good (Green) 50
Lexington Good (Green) 48
Marlboro Good (Green) 50
McCormick Moderate (Yellow) 77
Newberry Good (Green) 48
Oconee Moderate (Yellow) 77
Pickens Moderate (Yellow) 77
Richland Good (Green) 48
Saluda Good (Green) 48
Spartanburg Moderate (Yellow) 77
Sumter Good (Green) 48
Union Moderate (Yellow) 77
York Moderate (Yellow) 51
GA-Columbia Moderate (Yellow) 77
GA-Richmond Moderate (Yellow) 77
* 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.