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Tabline-AQAir Quality Resource Center

Air Quality Index (AQI) Calendar

The Air Quality Index, or AQI, is a standardized way to present information on air quality.  It is designed to help inform the public about air pollution levels in their area and associated health impact.  To obtain the AQI for a particular day during the ozone season (April - October), the maximum 8-hour average is entered into US-EPA's AQI conversion calculator.    Ozone values in the AQI run from 0 (satisfactory) to 500 (hazardous).  An AQI value of 100 corresponds to the National Ambient Air Quality Standard established for a pollutant.  Starting in 2016, the AQI is based on the strengthened 2015 eight-hour ozone standard.

The East-West Gateway AQI Calendar graphically presents the AQI for the ozone season.  The AQI Calendar converts the daily AQI into its respective color code (i.e., green for good, yellow for moderate, etc.).  The viewer can instantly observe the ozone season and the vairous ozone episodes and their severity.

AQI Calendars

AQICalendar-2014 AQICalendar-2013
AQICalendar-2015
AQICalendar-2016
AQICalendar-2010 AQICalendar-2009
AQICalendar-2012
AQICalendar-2011
AQICalendar-2006 AQICalendar-2005
AQICalendar-2008 AQICalendar-2007
AQICalendar-2004 AQICalendar-2003 AQICalendar-2002 AQICalendar-2001


PM 2.5 forecasts and information, as well as ozone information, are available on USEPA's AirNow website at www.epa.gov/airnow .

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East-West Gateway Council of Governments
One Memorial Dr., Ste 1600
St. Louis, MO  63102
phone:  (314) 421-4220 or (618) 274-2750
    fax: (314) 231-6120
e-mail: webmaster@ewgateway.org

 

last update:  Thursday, September 29, 2016