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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.

Tuesday, January 20 - Sunday, January 25, 2015

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

Particle pollution (PM2.5)

A mix of Good and Moderate air quality this week.

Weather outlook

PM2.5 air quality is in the Good range this Tuesday morning across Wisconsin. Temperatures will be mild this week and wind speeds will be relatively light. Favorable conditions for some Moderate levels of PM2.5 could occur Thursday into Friday. Another favorable period may be late in the upcoming weekend.  

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: Tuesday January 20 2015