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South Carolina Ground-level Ozone Forecast

For 9/25/2016

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

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Ground level ozone concentrations should remain green on this Saturday afternoon, except some readings around Catawba and northeast Upstate area are creeping towards code yellow. High pressure will remain in charge for one more day on Sunday. Mostly sunny skies are expected throughout the state. A backdoor frontal boundary will drift southward through the Mid-Atlantic and should enter the northeast portion of the state by sunset. A 30% chance of showers and/or storms are expected in Catawba and Pee Dee during the afternoon with just a slight chance of rain elsewhere. The atmosphere is fairly loaded with precursors across North Carolina and Virginia this afternoon. This loading should pivot into, especially the western half of the Palmetto state on Sunday. Expect the current precursor loads to disperse a little as we head deeper into the weekend. Having said that, there should be enough sun and remnant workweek precursors on Sunday to warrant a CODE YELLOW (Moderate) forecast for Upstate, Catawba, CSRA, and Midlands. Pee Dee and Trident should remain GREEN on Sunday due to cleaner airmass over the eastern half of the state.
County * Color Code AQI
Abbeville Moderate (Yellow) 74
Aiken Moderate (Yellow) 58
Anderson Moderate (Yellow) 74
Barnwell Moderate (Yellow) 58
Berkeley Good (Green) 45
Calhoun Moderate (Yellow) 51
Charleston Good (Green) 45
Cherokee Moderate (Yellow) 74
Chester Moderate (Yellow) 64
Chesterfield Good (Green) 45
Darlington Good (Green) 45
Dillon Good (Green) 45
Dorchester Good (Green) 45
Edgefield Moderate (Yellow) 58
Fairfield Moderate (Yellow) 51
Florence Good (Green) 45
Greenville Moderate (Yellow) 74
Greenwood Moderate (Yellow) 74
Kershaw Moderate (Yellow) 51
Lancaster Moderate (Yellow) 64
Laurens Moderate (Yellow) 74
Lee Good (Green) 45
Lexington Moderate (Yellow) 51
Marlboro Good (Green) 45
McCormick Moderate (Yellow) 58
Newberry Moderate (Yellow) 51
Oconee Moderate (Yellow) 74
Pickens Moderate (Yellow) 74
Richland Moderate (Yellow) 51
Saluda Moderate (Yellow) 51
Spartanburg Moderate (Yellow) 74
Sumter Moderate (Yellow) 51
Union Moderate (Yellow) 74
York Moderate (Yellow) 64
GA-Columbia Moderate (Yellow) 58
GA-Richmond Moderate (Yellow) 58
* 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.

No Data

We cannot currently provide data for the given area.

Good Moderate Unhealthy for Sensitive Groups Unhealthy Very Unhealthy No Data