As of Wednesday afternoon, all forecast regions are trending towards a code yellow finish with the exception of the Midlands, which is trending towards a code green finish. For Thursday, high pressure builds back into the region in the wake of the frontal passage Wednesday. Mostly sunny skies and a return to seasonably average temperatures across the state look to be on the cards. Winds will be slower than experienced earlier in the week as they slow to a light breeze from the North. Drier air will be advected into the forecast regions, steered on by the upper air pattern. Overall the pollutant dispersion characteristics appear to be the worst it has been this week and should begin a pattern of air mass stagnation for the coming days. For Thursday, all forecast regions are projected to peak in code YELLOW except Pee Dee which is expected to peak in code GREEN.

County *	Color Code	AQI
Abbeville	Moderate (Yellow)	61
Aiken	Moderate (Yellow)	58
Anderson	Moderate (Yellow)	61
Barnwell	Moderate (Yellow)	58
Berkeley	Moderate (Yellow)	54
Calhoun	Moderate (Yellow)	51
Charleston	Moderate (Yellow)	54
Cherokee	Moderate (Yellow)	61
Chester	Moderate (Yellow)	61
Chesterfield	Good (Green)	47
Darlington	Good (Green)	47
Dillon	Good (Green)	47
Dorchester	Moderate (Yellow)	54
Edgefield	Moderate (Yellow)	58
Fairfield	Moderate (Yellow)	51
Florence	Good (Green)	47
Greenville	Moderate (Yellow)	61
Greenwood	Moderate (Yellow)	61
Kershaw	Moderate (Yellow)	51
Lancaster	Moderate (Yellow)	61
Laurens	Moderate (Yellow)	61
Lee	Good (Green)	47
Lexington	Moderate (Yellow)	51
Marlboro	Good (Green)	47
McCormick	Moderate (Yellow)	58
Newberry	Moderate (Yellow)	51
Oconee	Moderate (Yellow)	61
Pickens	Moderate (Yellow)	61
Richland	Moderate (Yellow)	51
Saluda	Moderate (Yellow)	51
Spartanburg	Moderate (Yellow)	61
Sumter	Moderate (Yellow)	51
Union	Moderate (Yellow)	61
York	Moderate (Yellow)	61
GA-Columbia	Moderate (Yellow)	58
GA-Richmond	Moderate (Yellow)	58
* Ozone forecasts are not issued for counties not listed in this table.