For 6/29/2025
[ The forecast is updated daily by 3:30 pm EDT. ]
As of the mid-afternoon hours on Saturday, ground-level ozone concentrations were trending toward peaks in the yellow category over the Upstate, with peaks in the green category expected elsewhere. On Sunday, a weak upper low will bring scattered showers and thunderstorms to the region once again. The Upstate is expected to see just enough ozone formation for a peak in the yellow category, while the remaining zones are all predicted to finish with green peaks for the day.
| County * |
Color Code |
AQI |
| Abbeville |
Moderate (Yellow) |
51 |
| Aiken |
Good (Green) |
49 |
| Anderson |
Moderate (Yellow) |
51 |
| Barnwell |
Good (Green) |
49 |
| Berkeley |
Good (Green) |
47 |
| Calhoun |
Good (Green) |
48 |
| Charleston |
Good (Green) |
47 |
| Cherokee |
Moderate (Yellow) |
51 |
| Chester |
Good (Green) |
43 |
| Chesterfield |
Good (Green) |
44 |
| Darlington |
Good (Green) |
44 |
| Dillon |
Good (Green) |
44 |
| Dorchester |
Good (Green) |
47 |
| Edgefield |
Good (Green) |
49 |
| Fairfield |
Good (Green) |
48 |
| Florence |
Good (Green) |
44 |
| Greenville |
Moderate (Yellow) |
51 |
| Greenwood |
Moderate (Yellow) |
51 |
| Kershaw |
Good (Green) |
48 |
| Lancaster |
Good (Green) |
43 |
| Laurens |
Moderate (Yellow) |
51 |
| Lee |
Good (Green) |
44 |
| Lexington |
Good (Green) |
48 |
| Marlboro |
Good (Green) |
44 |
| McCormick |
Good (Green) |
49 |
| Newberry |
Good (Green) |
48 |
| Oconee |
Moderate (Yellow) |
51 |
| Pickens |
Moderate (Yellow) |
51 |
| Richland |
Good (Green) |
48 |
| Saluda |
Good (Green) |
48 |
| Spartanburg |
Moderate (Yellow) |
51 |
| Sumter |
Good (Green) |
48 |
| Union |
Moderate (Yellow) |
51 |
| York |
Good (Green) |
43 |
| GA-Columbia |
Good (Green) |
49 |
| GA-Richmond |
Good (Green) |
49 |
| * 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.
|
