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

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, February 1 - Sunday, February 7, 2016

Note: Ozone forecasts will resume in late April, when the 2016 ozone season begins.

Particle pollution (PM2.5)

Good and Moderate air quality this week.

Weather outlook

Particle pollution (PM2.5) air quality is a mix of Good and Moderate levels this Monday morning across Wisconsin. The Moderate levels were found across the southern part of the state. Winds will stay light and the PM2.5 levels should remain a mix of Good and Moderate.

As a storm system tracks towards the Midwest on Tuesday the winds will swing to an easterly direction and increase in speed. This should help keep PM2.5 levels in the Good range.

As the storm system pushes east of Wisconsin on Wednesday colder will flow into the region on northwest winds. Good air quality should prevail into Friday. Warmer air pushing back into Wisconsin may lead to some Moderate values on 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: Tuesday February 02 2016