We should see a mixture of CODE GREEN and CODE YELLOW among the six forecast zones for ground-level ozone this Friday afternoon. We should see an increase in ozone concentrations on Saturday for most of South Carolina, as surface high pressure moves closer to the Carolinas. With mostly sunny skies, light winds, and dry conditions, the atmosphere is ripe for ozone development. The Midlands zone should remain at CODE GREEN, due to some wind activity associated with the leeside trough, but all other zones should be at CODE YELLOW for Saturday.

County *	Color Code	AQI
Abbeville	Moderate (Yellow)	61
Aiken	Moderate (Yellow)	71
Anderson	Moderate (Yellow)	61
Barnwell	Moderate (Yellow)	71
Berkeley	Moderate (Yellow)	54
Calhoun	Good (Green)	49
Charleston	Moderate (Yellow)	54
Cherokee	Moderate (Yellow)	61
Chester	Moderate (Yellow)	74
Chesterfield	Moderate (Yellow)	58
Darlington	Moderate (Yellow)	58
Dillon	Moderate (Yellow)	58
Dorchester	Moderate (Yellow)	54
Edgefield	Moderate (Yellow)	71
Fairfield	Good (Green)	49
Florence	Moderate (Yellow)	58
Greenville	Moderate (Yellow)	61
Greenwood	Moderate (Yellow)	61
Kershaw	Good (Green)	49
Lancaster	Moderate (Yellow)	74
Laurens	Moderate (Yellow)	61
Lee	Moderate (Yellow)	58
Lexington	Good (Green)	49
Marlboro	Moderate (Yellow)	58
McCormick	Moderate (Yellow)	71
Newberry	Good (Green)	49
Oconee	Moderate (Yellow)	61
Pickens	Moderate (Yellow)	61
Richland	Good (Green)	49
Saluda	Good (Green)	49
Spartanburg	Moderate (Yellow)	61
Sumter	Good (Green)	49
Union	Moderate (Yellow)	61
York	Moderate (Yellow)	74
GA-Columbia	Moderate (Yellow)	71
GA-Richmond	Moderate (Yellow)	71
* Ozone forecasts are not issued for counties not listed in this table.