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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, December 15 - Sunday, December 21, 2014

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

Particle pollution (PM2.5)

Good air quality early this week and Moderate later this week.

Weather outlook

PM2.5 air quality is in the Good to low Moderate range this Monday across Wisconsin. A cold front will cross the state tomorrow. Northwest winds will push cooler air over the region later tomorrow and Wednesday. This will result in Good air quality. High pressure will build and dominate the weather for the remainder of the week through most of the weekend. There will be several days of light winds and relatively mild temperatures. Conditions will become favorable for Moderate levels of PM2.5 beginning late Thursday and lasting through the 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: Monday December 15 2014