Air Quality Index

Issued June 24, 2016 @ 04:13 PM CDT

Sector AQI Yesterday AQI Today Critical Pollutant Forecast Tomorrow
LAKE COUNTY  48   47   OZONE  UNHEALTHY FOR SENSITIVE GROUPS  
CHICAGO  58   111   OZONE  UNHEALTHY FOR SENSITIVE GROUPS  
SOUTH & WEST SUBURBS  61   140   OZONE  UNHEALTHY FOR SENSITIVE GROUPS  
NORTH & WEST SUBURBS  54   101   OZONE  UNHEALTHY FOR SENSITIVE GROUPS  
AURORA-ELGIN  50   132   OZONE  UNHEALTHY FOR SENSITIVE GROUPS  
WILL COUNTY  61   140   OZONE  UNHEALTHY FOR SENSITIVE GROUPS  
ROCKFORD  45   74   OZONE  MODERATE  
QUAD CITIES  43   77   OZONE  MODERATE  
PEORIA  45   111   OZONE  MODERATE  
CHAMPAIGN/URBANA  46   48   OZONE  MODERATE  
BLOOMINGTON/NORMAL  46   64   OZONE  MODERATE  
DECATUR  50   71   OZONE  MODERATE  
SPRINGFIELD  49   61   PARTICULATES  MODERATE  
METRO EAST  67   115   OZONE  UNHEALTHY FOR SENSITIVE GROUPS  
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.