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Air Quality Information

Air Quality Index

Issued July 23, 2014 @ 04:12 PM CDT

Sector AQI Yesterday AQI Today Critical Pollutant Forecast Tomorrow
LAKE COUNTY  57   24   OZONE  GOOD  
CHICAGO  62   26   PARTICULATES  GOOD  
SOUTH & WEST SUBURBS  83   40   PARTICULATES  GOOD  
NORTH & WEST SUBURBS  66   29   OZONE  GOOD  
AURORA-ELGIN  57   28   OZONE  GOOD  
WILL COUNTY  68   51   PARTICULATES  GOOD  
ROCKFORD  57   28   OZONE  GOOD  
QUAD CITIES  62   32   PARTICULATES  GOOD  
PEORIA  62   36   OZONE  GOOD  
CHAMPAIGN/URBANA  66   40   PARTICULATES  GOOD  
BLOOMINGTON/NORMAL  66   40   PARTICULATES  GOOD  
DECATUR  66   40   PARTICULATES  GOOD  
SPRINGFIELD  66   40   PARTICULATES  GOOD  
METRO EAST  97   60   PARTICULATES  GOOD  

 

Descriptor Category Color Codes
Good 0-50 Unhealthy 151-200
Moderate 51-100 Very Unhealthy 201-300
Unhealthy for Sensitive Groups 101-150 Hazardous 301-500

 

AQI Ranges and Descriptor Categories Health Effects Cautionary Statements
0 - 50 Good    
51 - 100 Moderate    
101 - 150 Unhealthy for Sensitive Groups Increased liklihood of respiratory symptoms and breathing discomfort in sensitive groups. Active children and adults, and people with respiratory disease, such as asthma, should limit prolonged outdoor activity.
151 - 200 Unhealthy Greater liklihood of respiratory symptoms and breathing difficulty in sensitive groups. Active children and adults, and people with respiratory disease, such as asthma, should avoid heavy outdoor exertion; everyone else, especially children, should limit heavy outdoor exertion.
201 - 300 Very Unhealthy Increasingly severe symptoms and impaired breathing likely in sensitive groups. Active children and adults, and people with respiratory disease, such as asthma, should avoid all outdoor exertion; everyone else, especially children, should limit outdoor exertion.
301 - 500 Hazardous Severe respiratory effects and impaired breathing likely in sensitive groups. Everyone should avoid all outdoor exertion.

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