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today's forecasts on AIRNow [exit DNR].
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current air quality in Wisconsin.
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Contact information
For information on air quality and forecasts, contact:
Mike Majewski
Meteorologist
608-267-0577

Current air quality outlook

Department meteorologists use monitoring data along with weather predictions to determine when and where an air quality notice is needed. The meteorologists submit daily air quality forecasts for eight Wisconsin cities to EPA's AirNow website [exit DNR]. Below is the current air quality forecast, which will be updated as needed.

Monday, October 27 - Sunday, November 2, 2014

Note: Ozone forecasts will resume in late April, when the 2015 ozone season begins.

Particle pollution (PM2.5)

Good air quality this week.

Weather outlook

Particle pollution (PM2.5) air quality is in the Good range Monday morning across Wisconsin. A warm front will advance northward into southern Wisconsin today. Temperatures may reach 70 degrees in the south along with somewhat breezy conditions. Cooler air will move in for Tuesday and Wednesday following the passage of a cold front. A surge of even cooler air is likely for Friday and Saturday. Warmer temperatures will return late next weekend. Air quality is expected to remain in the Good range for the week.

Air Quality Index (AQI) ranges

For more information, see the U.S. EPA's Air Quality Index - A Guide to Air Quality and Your Health [exit DNR].

Color coded chart showing ozone and fine particle concentration ranges for each AQI level
AQI Levels
of Health Concern
Numerical Value 8-hr Ozone (ppb) 24-hr PM2.5 (ug/m3)
Good 0-50 0-59 0.0 to 12.0
Moderate 51-100 60-75 12.1 to 35.4
Unhealthy for Sensitive Groups 101-150 76-95 35.5 to 55.4
Unhealthy 151-200 96-115 55.5 to 140.4
Very Unhealthy 201-300 116-374 140.5 to 210.4
Hazardous > 300 > 374 > 210.4
Last revised: Monday October 27 2014