The DNR Ambient Air Monitoring group organizes and plans air monitoring activities within the State of Iowa. Federal monitoring requirements are set by EPA rules. The ambient monitoring staff works with EPA Region 7 and the Local Programs in Polk and Linn counties to develop a monitoring plan for the State. The State contracts with the University of Iowa Hygienic Laboratory and the Polk and Linn County Local Programs to collect air monitoring data, quality assure the results, and report the data to the public. Members of the air monitoring group develop and administer these contracts. Ambient air monitoring staff also perform data analysis, help to site monitors, and participate in monitoring work- groups at the state and national levels. Real Time Air Monitoring Data Real-time air quality monitoring information, including the location of monitors and their current readings, can be found on the Current Air Quality site here.

• Iowa Ozone Design Values:

2006 - 2008 (PDF File)
2005 - 2007 (PDF File)
2004 - 2006 (PDF File)
2003 - 2005 (PDF File)
2002 - 2004 (PDF File)
2001 - 2003 (PDF File)
1999 - 2001 (PDF File)


• Selected Air Toxics Results:

2008 (PDF File)
2007 (PDF File)
2006 (PDF File)
2005 (PDF File)
2004 (PDF File)
2003 (PDF File)


• Iowa PM2.5 Design Values:

2006 - 2008 (PDF File)
2005 - 2007 (PDF File)
2004 - 2006 (PDF File)
2003 - 2005 (PDF File)
2002 - 2004 (PDF File)
2000 - 2002 (PDF File)


• Review of Ambient Monitoring Data:

2008 (PDF File)
2007 (PDF File)
2006 (PDF File)
2005 (PDF File)
2004 (PDF File)
2003 (PDF File)
2002 (PDF File)
2001 (PDF File)
2000 (PDF File)
1999 (PDF File)


• Ambient Air Monitoring Network Plans:

2009 (PDF File)
2008 (PDF File)
2007 (PDF File)


• Exceedances of Health Standards (AQI and NAAQS):

Iowa NAAQS Exceedances 2009 (PDF File)
Iowa NAAQS Exceedances 2008 (PDF File)
Iowa NAAQS Exceedances 2007 (PDF File)
Iowa AQI Exceedances 2006 (PDF File)
Iowa AQI Exceedances 2005 (PDF File)
Iowa AQI Exceedances 2004 (PDF File)
Iowa AQI Trends (PDF File)


• Visibility Information:

2003 Visibility Data and Maps for Iowa and U.S. (PDF File)


• Exceptional Events Demonstrations:

Fireworks Exceptional Event, Davenport, July 4th, 2008 (PDF File)

In 2002, the Iowa Legislature directed the DNR to perform a field study to determine airborne levels of ammonia, hydrogen sulfide, and odor near animal feeding operations. The links below contain the final results of the study and supplemental information.

• Odor Study Results and Resources:
• Results of the Iowa DNR Animal Feeding Operations Odor Study (PDF File)

Additional Information:
• AFO Odor Study Procedures, 2005 (ZIP File)
• A Review of The Science and Technology of Odor Measurement (PDF File)
  
  
• Hydrogen Sulfide and Ammonia Results and Resources:

Executive Summary:
• Executive Summary (3 MB PDF File)

Full Report:
• Introduction (PDF File)
• Summary Tables (PDF File)
• Map of Monitoring Sites (PDF File)
• Site Results-Introduction (PDF File)

Site Results:
• Atlantic (3 MB PDF File)
• Belmond (Old) (4 MB PDF File)
• Belmond (New) (17 MB PDF File)
• Clarion (11 MB PDF File)
• Goldfield (9 MB PDF File)
• Iowa Falls (10 MB PDF File)
• Jewell (14 MB PDF File)
• Kanawha (19 MB PDF File)
• Malcom (5 MB PDF File)
• Newkirk (17 MB PDF File)
• Sac City (18 MB PDF File)
• Sioux Center (5 MB PDF File)
• Stanhope (19 MB PDF File)
• Viking Lake (8 MB PDF File)
• West Union (13 MB PDF File)
• Williams (9 MB PDF File)
• Woodbine (6 MB PDF File)

Appendices
• Appendix A (PDF File)
• Appendix B (PDF File)
• Appendix C (PDF File)
• Appendix D (PDF File)
• Appendix E (PDF File)
• Appendix F (PDF File)
• Appendix G (PDF File)

Additional Information:
• Hydrogen Sulfide and Ammonia Study Procedures, 2005 (ZIP File)

• National PM2.5 Design Value Maps 2005 - 2007 (PDF File)
• 2008 Ozone NAAQS Designation Letter (PDF File)
• Air and Radiation
• Region 7 Air Program
• EPA AIRData (Historical Air Monitoring Database)
• Air Quality Index (AQI) Calculators
  • Concentration to AQI
  • AQI to Concentration