- 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. Below is the current air quality forecast for Wisconsin, which will be updated as needed.
Monday, January 23 - Thursday, January 26, 2017
Note: Ozone monitoring season ended on October 15, 2016. Ozone forecasts will resume in late April, when the 2017 ozone season begins.
Particle pollution (PM2.5)
PM2.5 air quality is in the Good range across Wisconsin this Monday morning. Little change is expected in today's weather with mild and overcast conditions continuing. Air quality will remain in the Good range.
A storm system will approach the state tomorrow with rain and snow likely by evening. Winds will be calm in the morning then become easterly during the day. Air quality should be in the Good range.
The storm system will pass east of Wisconsin during Wednesday. This will allow the winds to shift to the northwest and bring colder air back into the region beginning late Wednesday and lasting through Thursday. Air quality is forecast to be in the Good range for Wednesday and Thursday.
Below is the weather map for 6:00 a.m. Wednesday morning.
More January-like temperatures are forecast for Friday and Saturday with north-northwesterly winds. Air quality will be in the Good range.
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.
of Health Concern
|Numerical Value||8-hr Ozone (ppb)||24-hr PM2.5 (ug/m3)|
|Good||0-50||0-54||0.0 to 12.0|
|Moderate||51-100||55-70||12.1 to 35.4|
|Unhealthy for Sensitive Groups||101-150||71-85||35.5 to 55.4|
|Unhealthy||151-200||86-105||55.5 to 140.4|
|Very Unhealthy||201-300||106-200||140.5 to 210.4|
|Hazardous||> 300||> 201||> 210.4|