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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, November 30 - Sunday, December 6, 2015

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 mostly in the Good range this Monday morning across Wisconsin. Moderate values are being measured in Brown County. Concentrations are expected to remain unchanged for remainder of Monday.

An area of low pressure will move into northern Wisconsin on Tuesday. Colder air will move across the state as winds become more westerly. The slow-moving low pressure system will still be over the region on Wednesday. Air quality will remain in the Good range.

Quiet weather and Good air quality is expected Thursday through the upcoming weekend as a high pressure system moves across the Ohio River valley.

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 November 30 2015