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Air Toxics Program

IDEM Air Toxics > Monitoring > Air Toxics Monitoring Data Air Toxics Monitoring Data

IDEM has collected air toxics data at many different monitoring locations over time. Currently IDEM is collecting air toxics monitoring data from nine (9) monitoring locations. You can see the location of past and current air toxics monitors on the map below.

Most of this data has been collected on a 1-in-6 day schedule, meaning that every sixth day a 24 hour sample of the air is evaluated. This sampling looks at Volatile Organic Compounds (VOCs) and represents a subset of the 187 Hazardous Air Pollutants (HAPs) identified by U.S. EPA. This data is compared to health protective benchmarks on a monthly basis.

Additionally, IDEM is running two (2) Photochemical Assessment Monitoring Stations (PAMS). These sites take hourly samples of air toxics that are of particular interest in relation to the formation of ozone. These monitors have traditionally only been required to run during the warmer months, when ozone is more of a concern, but starting in 2012 these sites have been run continuously so IDEM can better understand air toxics within the state.

IDEM is in the process of updating the air toxics database. This change will allow the presentation of supplementary tables and graphs, in addition to making available interactive data analyses tools for use by the public. However, during the update, some air toxics monitoring data may not be available on the web page. Please email if you need access to current or past 1-in-6 day sampling data. Hourly PAMS data is available by following the links on the map and in the table below. Historic data for many parameters is available from U.S. EPA’s Air Quality Data Mart.

Toxic Monitoring DataGary - IITRIGary - IITRIIndpls - Washington ParkIndpls - Washington Park
Toxic Monitoring Sites
County City Monitor Site Name PAMS 1-in-6 Years Sampled
Allen Fort Wayne Fort Wayne - Beacon St. 2003-2007***
Clark Clarksville Clarksville Active** 2008-Present Day
Elkhart Elkhart Elkhart Fire Station #5 1999-2000, 2003***
Elkhart Elkhart Northside School 1999-2000***
Elkhart Elkhart Pierre Moran School 1999-2007***
Elkhart Elkhart Pinewood School 1999-2000***
Lake East Chicago East Chicago-Marina Active** 1999-Present Day
Lake Gary Gary-IITRI Active* Active** 1999-Present Day
Lake Gary Gary Ivanhoe 2000-2003***
Lake Gary Pulaski Dunbar 2000-2001***
Lake Hammond Hammond-141st St Active** 1999-Present Day
Lake Hammond Hammond Purdue 2000-2001***
Lake Hammond Lincoln Elementary 2000-2001***
Lake Whiting Whiting HS Active** 2005-Present Day
Marion Indianapolis Indpls - E. 16th St. 1999***
Marion Indianapolis Indpls - W. 18th St. 1999***
Marion Indianapolis Indpls - Harding St. 1999, 2006-2008***
Marion Indianapolis Indpls - School 21 2001-2008***
Marion Indianapolis Stoutfield 2006-2008***
Marion Indianapolis Indpls - Washington Park Active* Active** 1999-Present Day
Porter Ogden Dunes Ogden Dunes Active** 1999-Present Day
Posey Mt. Vernon Mount Vernon School 2000***
Tippecanoe Lafayette Lafayette - Greenbush St. 2008-2012***
Vanderburgh Evansville Culver School 2000***
Vanderburgh Evansville Evansville - U of E Active** 1999-Present Day
Vanderburgh Evansville North High School 2000***
Vigo Terre Haute Terre Haute 2013-Present Day

* Photochemical Assessment Monitoring Station (PAMS). These sites take hourly samples of air toxics and data is available now from the map and table above.

** A 24 hour sample of the air is taken every 6th day (1-in-6). The sample is tested for Volatile Organic Compounds (VOCs).

*** Inactive monitor. Dates indicate the year/years when the monitor was active.

Ambient Air Monitoring Links