Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
703 AM CDT Fri Jul 17 2026

WIZ046-047-051-052-056>060-062>072-181215-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
703 AM CDT Fri Jul 17 2026

This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.

.DAY ONE...Today and Tonight

The Air Quality Advisory issued by the Wisconsin Department of
Natural Resources remains in effect until noon. Wildfire smoke is
expected to continue contributing to lower visibilities and
unhealthy/hazardous air quality.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Wildfire smoke is expected to contribute to lower visibilities
and unhealthy air quality again this weekend.

Chance of thunderstorms into Saturday and again later Monday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

WIZ046-047-051-052-056>060-062>072-171700-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
Including the cities of Montello, Westfield, Oxford, Neshkoro,
Endeavor, Berlin, Princeton, Markesan, Fond Du Lac, Plymouth,
Sheboygan Falls, Howards Grove, Oostburg, Baraboo, Reedsburg,
Prairie Du Sac, Sauk City, Portage, Columbus, Lake Wisconsin,
Lodi, Beaver Dam, Waupun, Mayville, West Bend, Germantown,
Hartford, Mequon, Cedarburg, Grafton, Dodgeville, Mineral Point,
Barneveld, Madison, Watertown, Fort Atkinson, Jefferson,
Waukesha, Brookfield, New Berlin, Menomonee Falls, Muskego,
Milwaukee, Darlington, Shullsburg, Benton, Belmont, Argyle,
Blanchardville, Monroe, Brodhead, Janesville, Beloit, Whitewater,
Delavan, Elkhorn, Lake Geneva, East Troy, Racine, and Kenosha
919 AM CDT Thu Jul 16 2026

The Wisconsin Department of Natural Resources has issued an Air
Quality Advisory for the following counties: Columbia, Dane,
Dodge, Fond du Lac, Green, Green Lake, Iowa, Jefferson, Kenosha,
Lafayette, Marquette, Milwaukee, Ozaukee, Racine, Rock, Sauk,
Sheboygan, Walworth, Washington, Waukesha.

WHAT...The PM2.5 AQI is expected to reach the Unhealthy (Red) to
Hazardous (Maroon) level.

WHERE...Statewide.

WHEN...Until noon Friday.

Precautionary/Preparedness Actions:
Sensitive groups: Stay indoors and keep activity levels light.
Follow tips for keeping particle levels low indoors.
People with asthma: Follow your asthma action plan and keep
quick-relief medicine handy.
People with heart disease: Symptoms such as palpitations,
shortness of breath, or unusual fatigue may indicate a serious
problem. If you have any of these, contact your health care
provider.
Everyone: Avoid all physical activity outdoors.

Additional Details:
As of 7 a.m. Thursday morning, widespread Very Unhealthy (Purple)
to Hazardous (Maroon) AQI PM2.5 is being observed nearly
statewide. Surface analysis at 4 a.m. placed the boundary from
approximately Prairie du Chien to Platteville, with cleaner air
to the south and west of this boundary in portions of Grant,
Lafayette, and Crawford Counties. Although this boundary may
meander to the northeast from roughly 9 a.m. to 6 p.m. today and
bring cleaner air further into far southwest Wisconsin, the
boundary is then likely to sag back southwest overnight into
Friday morning. We then expect to see clearing of the smoke from
west to east throughout the day on Friday as southerly winds pick
up ahead of an approaching system. Given this setup, we are going
to extend the statewide air quality advisory until noon Friday.
At that time, it will be possible that we will extend the
advisory once again for eastern areas, especially those impacted
by Lake Michigan. It is also possible that areas along Lake
Superior will see prolonged smoke impacts and need to remain in
the advisory. However, we expect to remove much of the state from
the advisory area at that time for this first round of smoke.

For more information on current air quality, please see:
https://airquality.wi.gov

$$

Hazard Report Provided By forecast.weather.gov