974  
AEUS73 KILX 202147  
AQIILX  
 
DAILY AQI REPORT  
ILLINOIS ENVIRONMENTAL PROTECTION AGENCY...SPRINGFIELD IL  
4PM CDT WEDNESDAY SEPTEMBER 20 2017  
THIS IS THE AIR QUALITY INDEX..AQI..REPORT FOR THE CHICAGO  
METROPOLITAN AREA ENDING AT 4PM TODAY...  
 
AQI DESCRIPTOR CRITICAL TOMORROW  
SECTOR VALUE CATEGORY POLLUTANT FORECAST  
 
LAKE COUNTY.... 59 MODERATE PARTICULATES MODERATE  
 
CHICAGO........ 63 MODERATE PARTICULATES MODERATE  
SOUTH & WEST  
SUBURBS........ 63 MODERATE PARTICULATES MODERATE  
NORTH & WEST  
SUBURBS........ 59 MODERATE PARTICULATES MODERATE  
 
AURORA-ELGIN... 59 MODERATE PARTICULATES MODERATE  
JOLIET/WILL  
COUNTY......... 41 GOOD OZONE MODERATE  
   
..REPORTS FOR OTHER METROPOLITAN AREAS ENDING AT 4PM TODAY
 
 
 
ROCKFORD....... 59 MODERATE PARTICULATES MODERATE  
 
QUAD CITIES.... 42 GOOD PARTICULATES MODERATE  
 
PEORIA......... 43 GOOD OZONE MODERATE  
CHAMPAIGN/  
URBANA......... 44 GOOD OZONE MODERATE  
BLOOMINGTON/  
NORMAL......... 40 GOOD OZONE MODERATE  
 
DECATUR........ 55 MODERATE PARTICULATES MODERATE  
 
SPRINGFIELD.... 55 MODERATE PARTICULATES MODERATE  
METRO EAST/  
EAST ST LOUIS.. 64 MODERATE OZONE MODERATE  
 
AQI RANGES AND CATEGORIES... 0 TO 50...GOOD 51 TO 100...MODERATE  
101 TO 150...UNHEALTHY FOR SENSITIVE GROUPS 151 TO 200...UNHEALTHY  
201 TO 300...VERY UNHEALTHY 301 TO 500...HAZARDOUS  
 
FOR FURTHER INFORMATION CONTACT THE ILLINOIS EPA AT 217 785 8911  
##A  
 
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