Chicago
 
  • AQI Loop
  • AQI
  • Ozone AQI
  • PM2.5 AQI
AQI Animation - http://www.epa.gov/airnow/2013/20130322/anim_aqi_chicago_il.gif
Peak AQI - http://www.epa.gov/airnow/2013/20130322/peak_aqi_chicago_il.jpg
Peak Ozone (8-hour) - http://www.epa.gov/airnow/2013/20130322/peak_o3_chicago_il.jpg
Peak Particles PM<sub>2.5</sub> (24-hour) - http://www.epa.gov/airnow/2013/20130322/peak_pm25_chicago_il.jpg
 
AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action DayAction Day
 
Local Air Quality Resources
Action Day Programs | Forecast | Real-time Ozone Data Program | Today's AQI
 
State Air Quality Resources
Illinois EPA - Air Quality Index (AQI)
Illinois EPA - Air Quality Information
Illinois EPA - Bureau of Air
Illinois EPA - Contact Information
Illinois Environmental Protection Agency (EPA)
Partners for Clean Air
Respiratory Health Association of Metropolitan Chicago