564  
AEUS72 KCHS 182002  
AQICHS  
 
GROUND LEVEL OZONE FORECAST  
SOUTH CAROLINA DEPARTMENT OF ENVIRONMENTAL SERVICES  
RELAYED BY NATIONAL WEATHER SERVICE CHARLESTON SC  
402 PM EDT FRI APR 18 2025  
 
GROUND LEVEL OZONE FORECASTS FOR THE CHARLESTON TRI-COUNTY AREA  
OF SOUTH CAROLINA ARE PROVIDED BY THE SOUTH CAROLINA DEPARTMENT  
OF ENVIRONMENTAL SERVICES.  
 
SCZ044-045-050-052-192115-  
DORCHESTER-INLAND BERKELEY-CHARLESTON-TIDAL BERKELEY-  
402 PM EDT FRI APR 18 2025  
 
THE GROUND LEVEL OZONE FORECAST FOR CHARLESTON, BERKELEY AND  
DORCHESTER COUNTIES, INCLUDING THE CHARLESTON METROPOLITAN AREA,  
FOR SATURDAY IS 51 OR CODE YELLOW. THIS FALLS IN THE MODERATE  
CATEGORY.  
 
A CODE YELLOW FORECAST MEANS UNUSUALLY SENSITIVE PEOPLE SHOULD  
CONSIDER LIMITING PROLONGED OUTDOOR EXERTION.  
 

 
 
--- AIR QUALITY INDEX TABLE ---  
 
COLOR CODE AIR QUALITY INDEX CODE DESCRIPTION  
--------------------------------------------------------  
GREEN 0-50 GOOD  
YELLOW 51-100 MODERATE  
ORANGE 101-150 UNHEALTHY FOR SENSITIVE GROUPS  
RED 151-200 UNHEALTHY  
PURPLE 201-300 VERY UNHEALTHY  
 
VISIT THE SC DEPT OF ENVIRONMENTAL SERVICES WEBSITE  
AT HTTP://WWW.DES.SC.GOV/OZONE FOR ADDITIONAL INFORMATION  
AND GROUND LEVEL OZONE FORECASTS FOR OTHER AREAS IN SC.  
 

 
 
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