Air Quality Watches & Advisories

Information current as of 9:23 am Saturday, November 21, 2009.   

What is a Watch?

An Air Quality Watch is issued when conditions are favorable for air pollutants to reach unhealthy levels based on the Air Quality Index.


What is an Advisory?

An Air Quality Advisory is issued when air pollutants have reached unhealthy levels based on the Air Quality Index.


Learn more about EPA's Air Quality Index
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more about the AQI


Current Alerts
  • Air Quality Advisory for Particle Pollution (Orange)
    Issued: 4:55 pm Friday, November 20, 2009

    Update: Correction: The Air Quality Advisory is in effect as of now and continues to noon on Saturday, November 21. 2009.

    The Wisconsin DNR has issued an Air Quality Advisory for Particle Pollution (Orange) effective 12 midnight Saturday, November 21, 2009 through 12 noon Saturday, November 21, 2009 for Chippewa, Clark, Dunn, Eau Claire, Pepin, Pierce, St. Croix and Taylor counties.

    The advisory is being issued because of persistent elevated levels of fine particles in the air. These fine particles come primarily from combustion sources, such as power plants, factories and other industrial sources, vehicle exhaust, and wood burning.

    The Air Quality Index is currently in or expected to soon be in the orange level, which is considered unhealthy for people in sensitive groups. People in those sensitive groups include those with heart or lung disease, asthma, older adults and children. When an orange advisory for particle pollution is issued, people in those groups are advised to reschedule or cut back on strenuous activities.

    People with lung diseases such as asthma and bronchitis, and heart disease should pay attention to cardiac symptoms like chest pain and shortness of breath or respiratory symptoms like coughing, wheezing and discomfort when taking a breath, and consult with their physician if they have concerns or are experiencing symptoms. Fine particle pollution deposits itself deep into the lungs and cannot easily be exhaled. People who are at risk are particularly vulnerable after several days of high particle pollution exposure.

  • Air Quality Watch for Particle Pollution
    Issued: 2:05 pm Friday, November 20, 2009

    The Wisconsin DNR has issued an Air Quality Watch for Particle Pollution effective 12:30 am Saturday, November 21, 2009 through 11:59 pm Monday, November 23, 2009 for Adams, Barron, Brown, Buffalo, Calumet, Chippewa, Clark, Columbia, Crawford, Dane, Dodge, Door, Dunn, Eau Claire, Fond Du Lac, Grant, Green, Green Lake, Iowa, Jackson, Jefferson, Juneau, Kenosha, Kewaunee, La Crosse, Lafayette, Langlade, Lincoln, Manitowoc, Marathon, Marinette, Marquette, Menominee, Milwaukee, Monroe, Oconto, Outagamie, Ozaukee, Pepin, Pierce, Polk, Racine, Richland, Rock, Rusk, St. Croix, Sauk, Shawano, Sheboygan, Taylor, Trempeleau, Vernon, Walworth, Washington, Waukesha, Waupaca, Waushara, Winnebago, and Wood counties.

    The watch is being issued because of the forecast for elevated levels of fine particles in the air. Fine particle pollution is composed of microscopic dust, soot, liquid droplets and smoke particles that are 2.5 microns or smaller. These fine particles come primarily from combustion sources, such as power plants, factories and other industrial sources, vehicle exhaust, and wood burning.

    The Air Quality Index is forecast to reach the orange level, which is considered unhealthy for people in sensitive groups. People in those sensitive groups include those with heart or lung disease, asthma, older adults and children. When an air quality watch is issued, people in those groups are advised to reschedule or cut back on strenuous activities during the watch period.

    People with lung diseases such as asthma and bronchitis and heart disease should pay attention to cardiac symptoms like chest pain and shortness of breath or respiratory symptoms like coughing, wheezing and discomfort when taking a breath, and consult with their physician if they have concerns or are experiencing symptoms. Fine particle pollution deposits itself deep into the lungs and cannot easily be exhaled. People who are at risk are particularly vulnerable after several days of high particle pollution exposure.


The Department of Natural Resources uses weather forecasts and data from air monitoring sites to determine air quality in the state and notifies residents when pollutants reach unhealthy levels based on the Air Quality Index (AQI). The AQI includes two pollutants that can cause health problems in humans -- ozone and particle pollution.

To protect public health, the DNR may issue an advisory even though pollutant levels at some locations have not yet reached unhealthy levels. Forecasters evaluate weather conditions and typically issue an advisory when pollutant levels are rising and at least one monitor has exceeded the standard.

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Current Air Quality

  • Today's Air Quality - Real-time monitoring of air quality around Wisconsin
  • Daily Air Quality Hotline - 1-866-324-5924 (1-866-DAILY AIR)
  • Visibility Monitoring Camera at Milwaukee, Wisconsin [exit DNR]
  • EPA AirNow [exit DNR] - nationwide air quality forecasts

For More Information Including How You Can Help:


Air Quality and Health
Last Revised: Tuesday, October 13, 2009