Ozone Resources and Air Monitoring Data

On this page, you can find links to current air quality information, both in Wisconsin and around the country. You can also find publications about ozone's health effects and links to information about air quality watches and advisories. Finally, there are several technical documents related to ozone rules at both the state and federal levels.

Air Quality Forecasts and Monitoring Data

• Wisconsin's Air Quality Monitoring Network measures levels of several types of air pollution, including ground-level ozone.
• Today's air quality data around Wisconsin (Note: The air monitoring data will open in a new browser window.)
• List of DNR monitoring site locations
• AIRNOW [exit DNR] - U.S. EPA Web site that provides real-time ozone data, animated maps and ozone forecasts for most of the eastern United States
• View graphics summarizing trends in ozone levels around Wisconsin since 1980

Ozone Publications and Links

Ozone Health Information

• Air Quality Guide for Ozone [exit DNR] -- U.S. EPA Web page on how to protect health when ozone reaches unhealthy levels
• Smog--Who Does It Hurt? What You Need to Know About Ozone and Your Health [exit DNR]
• Ozone: Good Up High, Bad Nearby [exit DNR] -- explains why ozone is helpful in the stratosphere but harmful near earth
• Ozone & Your Health [PDF 287KB] - 11" x 17" color brochure (English)
• El Ozono y Su Salud [PDF 179 KB] - folleto en el color, 11 pulgadas por 17 pulgadas (Spanish/Español)
• Do a Little…Save a Lot!  - Take action to protect yourself from poor air quality and reduce emissions

Visit the Air Management educational resources page for more information.

Air Quality Watch/Air Quality Advisory Programs

• Air Quality Advisories -- Official Wisconsin DNR notification page. Note, the ozone monitoring season begins April 15.
• Ozone Action Days forecast across the United States [exit DNR]

Important Ozone Documents

The following documents and links provide technical information on ozone regulations, including proposed federal and state rules, information about ozone rule violations, and information on demonstrating compliance (attainment) with federal air quality standards.

Rule-making

• EPA’s June 2007 notice of proposed rulemaking on the National Ambient Air Quality Standard for Ozone [PDF 1.2MB]
• "Green sheet" documents submitted to the Natural Resources Board [PDF 505KB] outlining Wisconsin's adoption of Reasonably Available Control Technology (RACT) for nitrogen oxides (NOx)
• "Green sheet" documents submitted to the Natural Resources Board [PDF 553KB] outlining Wisconsin's adoption of provisions of the Clean Air Interstate Rule (CAIR)
• "Green sheet" documents submitted to the Natural Resources Board [PDF 152KB] outlining a modification to the CAIR rules adopted in January 2007 (above link)
• EPA Federal Register notices approving Wisconsin's Clean Air Interstate Rule, from July 31, 2007 [exit DNR] and October 16, 2007 [exit DNR]

Ozone violations

• Documents from district court proceedings between EPA and WE Energies (Wisconsin Electric Power Company) regarding pollution violations at WE Energies facilities, including a procedural document [PDF 121KB] and the official agreement among parties [PDF 2MB]

Nonattainment areas and redesignation requests

• Updated emissions inventory and motor vehicle emissions budgets for the state of Wisconsin’s September 2009 8-hour ozone redesignation request and maintenance plan submittal [PDF 288KB]
• 2009 attainment demonstration submissions for the Milwaukee 6-county area and Door, Manitowoc and Sheboygan counties
• 2009 redesignation request for the Milwaukee 6-county area and Door, Manitowoc and Sheboygan counties
• Findings of Fact, Conclusions of Law and Decision on Redesignation of the Counties of Kenosha, Racine, Milwaukee, Ozaukee, Washington and Waukesha to Attainment of the One-Hour Federal Ozone Standard [PDF 107KB]
• 2008 Daily Ozone Standard - Nonattainment Designation Options Technical Support Document [PDF 1,000KB]
• Appendix 1 [PDF 103KB]
• Appendix 2 [PDF 68KB]
• Appendix 3 [PDF 22KB]
• 1-hour redesignation submission for the Milwaukee 6-county area

• 1-hour ozone attainment memo (final) [PDF 343KB]
• Preliminary findings of fact, conclusions of law and decision [PDF 33KB]
• EPA Guidance on Ozone Attainment Demonstrations [PDF 1MB]
• 2007 redesignation submission for Manitowoc and Kewaunee counties

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