Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
109 PM CDT Sat Jul 18 2026

WIZ046-047-051-052-056>060-062>072-191815-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
109 PM CDT Sat Jul 18 2026

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

.DAY ONE...This Afternoon and Tonight

The Wisconsin DNR has issued an Air Quality Advisory for all of
Wisconsin, as wildfire smoke moving southward into the state is
expected to contribute to lower visibilities and unhealthy air
quality mainly tonight.

There is a High Swim Risk for area beaches in Ozaukee, Milwaukee,
Racine and Kenosha Counties tonight, with a Moderate Swim Risk
for Sheboygan County beaches. Life threatening waves and currents
are expected in High Swim Risk areas. Stay out of the water, and
away from dangerous areas like piers, breakwalls and river
outlets.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

The Air Quality Advisory continues Sunday into Monday morning, as
wildfire smoke lingers and continues to contribute to lower
visibilities and unhealthy air quality.

Severe storms are possible mainly Monday afternoon and evening,
with all severe weather hazards possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed Monday afternoon and evening.

$$

WIZ046-047-051-052-056>060-062>072-201700-
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
941 AM CDT Sat Jul 18 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 Very Unhealthy
(Purple) to Unhealthy (Red) level.

WHERE...Statewide.

WHEN...Until noon Monday.

Precautionary/Preparedness Actions:

For Very Unhealthy (Purple) AQI:
Sensitive groups: Avoid all physical activity outdoors.
Reschedule to a time when air quality is better or move
activities 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 else: Limit outdoor physical activity. Go indoors if you
have symptoms.

For Unhealthy (Red) AQI:
Sensitive groups: Consider rescheduling or moving all activities
inside. Go inside if you have symptoms.
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 else: Keep outdoor activities shorter and less intense.
Go inside if you have symptoms.

Additional Details:
Another round of smoke will move in from the north-northeast
throughout the day on Saturday before settling over the state on
Sunday. Most areas are expected to observe Unhealthy (Red) AQI
PM2.5, with the heaviest impacts to the northeast where Very
Unhealthy (Purple) AQI PM2.5 will be possible. Some areas to the
southwest may only experience Unhealthy for Sensitive Groups
(Orange) AQI PM2.5. This round of smoke may not reach the
southwestern half of the state before sunset Saturday, meaning
the smoke will arrive overnight, with statewide impacts expected
by 6 a.m. Sunday morning.

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

$$

Sheppard

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