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 email@example.com 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 Sites|
|County||City||Monitor Site Name||PAMS||1-in-6||Years Sampled|
|Allen||Fort Wayne||Fort Wayne - Beacon St.||2003-2007***|
|Elkhart||Elkhart||Elkhart Fire Station #5||1999-2000, 2003***|
|Elkhart||Elkhart||Pierre Moran School||1999-2007***|
|Lake||East Chicago||East Chicago-Marina||Active**||1999-Present Day|
|Lake||Hammond||Hammond-141st St||Active**||1999-Present Day|
|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 - I-70 E||2016-Present Day|
|Marion||Indianapolis||Indpls - School 21||2001-2008***|
|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||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.