904  
AEUS71 KPBZ 212130  
AQIPBZ  
 
AIR QUALITY FORECAST  
PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION  
RELAYED BY NATIONAL WEATHER SERVICE PITTSBURGH PA  
430 PM EST FRI FEB 21 2025  
 
AIR QUALITY FORECASTS FOR PENNSYLVANIA ARE PROVIDED BY THE  
PENNSYLVANIA DEPARTMENT OF ENVIRONMENTAL PROTECTION.  
 
PAZ014-020>022-029-073>076-222100-  
ALLEGHENY-BUTLER-BEAVER-ARMSTRONG-WASHINGTON-WESTMORELAND-FAYETTE-  
430 PM EST FRI FEB 21 2025  
 
THE FORECAST FOR SATURDAY IN PITTSBURGH IS CODE YELLOW, WHICH  
IS MODERATE, AND MEANS THAT PEOPLE UNUSUALLY SENSITIVE TO AIR  
POLLUTION MAY BE MILDLY AFFECTED. THE PRIMARY POLLUTANT WILL  
BE FINE PARTICLES.  
 
FOR MORE INFORMATION ON GROUND-LEVEL OZONE AND  
FINE PARTICLES, VISIT HTTP://WWW.AIRNOW.GOV AND  
HTTPS://WWW.AHS.DEP.PA.GOV/AQPARTNERSWEB/  
 
 
 
PAZ021-222100-  
ALLEGHENY-  
430 PM EST FRI FEB 21 2025  
 
THE FORECAST FOR SATURDAY IN LIBERTY-CLAIRTON AREA IS CODE  
YELLOW, WHICH IS MODERATE, AND MEANS THAT PEOPLE UNUSUALLY  
SENSITIVE TO AIR POLLUTION MAY BE MILDLY AFFECTED. THE PRIMARY  
POLLUTANT WILL BE FINE PARTICLES.  
 
FOR MORE INFORMATION ON GROUND-LEVEL OZONE AND  
FINE PARTICLES, VISIT HTTP://WWW.AIRNOW.GOV AND  
HTTPS://WWW.AHS.DEP.PA.GOV/AQPARTNERSWEB/  
 
 
 
PAZ077-078-222100-  
INDIANA-HIGHER ELEVATIONS OF INDIANA-  
430 PM EST FRI FEB 21 2025  
 
THE FORECAST FOR SATURDAY IN INDIANA COUNTY IS CODE GREEN,  
WHICH IS GOOD, AND MEANS LITTLE OR NO HEALTH RISK. THE PRIMARY  
POLLUTANT WILL BE FINE PARTICLES.  
 
FOR MORE INFORMATION ON GROUND-LEVEL OZONE AND  
FINE PARTICLES, VISIT HTTP://WWW.AIRNOW.GOV AND  
HTTPS://WWW.AHS.DEP.PA.GOV/AQPARTNERSWEB/  
 
 
 
PAZ007-222100-  
MERCER-  
430 PM EST FRI FEB 21 2025  
 
THE FORECAST FOR SATURDAY IN MERCER COUNTY IS CODE YELLOW,  
WHICH IS MODERATE, AND MEANS THAT PEOPLE UNUSUALLY SENSITIVE  
TO AIR POLLUTION MAY BE MILDLY AFFECTED. THE PRIMARY POLLUTANT  
WILL BE FINE PARTICLES.  
 
FOR MORE INFORMATION ON GROUND-LEVEL OZONE AND  
FINE PARTICLES, VISIT HTTP://WWW.AIRNOW.GOV AND  
HTTPS://WWW.AHS.DEP.PA.GOV/AQPARTNERSWEB/  
 
 
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