For 5/21/2024
[ The forecast is updated daily by 3:30 pm EDT. ]
Ground level ozone concentrations are mostly on track to finish code Green, with an isolated code Yellow possible in the Catwaba region, on this Monday afternoon. For tomorrow, a ridge of high pressure will continue to move into the region, resulting in increasing temperatures and mostly sunny skies. This, in addition to relatively dry air, and light winds, especially in Catawba and the Upstate, will allow for more ozone production and for concentrations to build a bit. As a result, ground level ozone is expected to finish code Yellow in the Catawba and Upstate regions, while all other regions should remain code Green on Tuesday.
| County * |
Color Code |
AQI |
| Abbeville |
Moderate (Yellow) |
61 |
| Aiken |
Good (Green) |
49 |
| Anderson |
Moderate (Yellow) |
61 |
| Barnwell |
Good (Green) |
49 |
| Berkeley |
Good (Green) |
38 |
| Calhoun |
Good (Green) |
46 |
| Charleston |
Good (Green) |
38 |
| Cherokee |
Moderate (Yellow) |
61 |
| Chester |
Moderate (Yellow) |
67 |
| Chesterfield |
Good (Green) |
42 |
| Darlington |
Good (Green) |
42 |
| Dillon |
Good (Green) |
42 |
| Dorchester |
Good (Green) |
38 |
| Edgefield |
Good (Green) |
49 |
| Fairfield |
Good (Green) |
46 |
| Florence |
Good (Green) |
42 |
| Greenville |
Moderate (Yellow) |
61 |
| Greenwood |
Moderate (Yellow) |
61 |
| Kershaw |
Good (Green) |
46 |
| Lancaster |
Moderate (Yellow) |
67 |
| Laurens |
Moderate (Yellow) |
61 |
| Lee |
Good (Green) |
42 |
| Lexington |
Good (Green) |
46 |
| Marlboro |
Good (Green) |
42 |
| McCormick |
Good (Green) |
49 |
| Newberry |
Good (Green) |
46 |
| Oconee |
Moderate (Yellow) |
61 |
| Pickens |
Moderate (Yellow) |
61 |
| Richland |
Good (Green) |
46 |
| Saluda |
Good (Green) |
46 |
| Spartanburg |
Moderate (Yellow) |
61 |
| Sumter |
Good (Green) |
46 |
| Union |
Moderate (Yellow) |
61 |
| York |
Moderate (Yellow) |
67 |
| 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.
|
