For 9/15/2025
[ The forecast is updated daily by 3:30 pm EDT. ]
The Upstate region is currently trending code yellow on this Sunday, while all other regions are trending green. For Monday, a similar story but with a little more atmospheric moisture to help inhibit ozone formation, except without clouds. This means formation will still continue. A northeasterly breeze will help to disperse some pollutants, but overall, the Upstate is expected to be CODE YELLOW again while other regions should remain CODE GREEN.
| County * |
Color Code |
AQI |
| Abbeville |
Moderate (Yellow) |
80 |
| Aiken |
Good (Green) |
46 |
| Anderson |
Moderate (Yellow) |
80 |
| Barnwell |
Good (Green) |
46 |
| Berkeley |
Good (Green) |
46 |
| Calhoun |
Good (Green) |
47 |
| Charleston |
Good (Green) |
46 |
| Cherokee |
Moderate (Yellow) |
80 |
| Chester |
Good (Green) |
50 |
| Chesterfield |
Good (Green) |
47 |
| Darlington |
Good (Green) |
47 |
| Dillon |
Good (Green) |
47 |
| Dorchester |
Good (Green) |
46 |
| Edgefield |
Good (Green) |
46 |
| Fairfield |
Good (Green) |
47 |
| Florence |
Good (Green) |
47 |
| Greenville |
Moderate (Yellow) |
80 |
| Greenwood |
Moderate (Yellow) |
80 |
| Kershaw |
Good (Green) |
47 |
| Lancaster |
Good (Green) |
50 |
| Laurens |
Moderate (Yellow) |
80 |
| Lee |
Good (Green) |
47 |
| Lexington |
Good (Green) |
47 |
| Marlboro |
Good (Green) |
47 |
| McCormick |
Good (Green) |
46 |
| Newberry |
Good (Green) |
47 |
| Oconee |
Moderate (Yellow) |
80 |
| Pickens |
Moderate (Yellow) |
80 |
| Richland |
Good (Green) |
47 |
| Saluda |
Good (Green) |
47 |
| Spartanburg |
Moderate (Yellow) |
80 |
| Sumter |
Good (Green) |
47 |
| Union |
Moderate (Yellow) |
80 |
| York |
Good (Green) |
50 |
| GA-Columbia |
Good (Green) |
46 |
| GA-Richmond |
Good (Green) |
46 |
| * 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.
|
