Today | Weather | Thursday, June 11, 2026
Active Weather Warnings

Weather in West Allis, Wisconsin

03:13 PM
Now
Stormy Weather
73° F
Feels Like 72°
Precipitation 70 %
Wind 12 mph
UV Index (0 - 11+) 1
Humidity 79 %
Today
Sunny with a Chance of Thunderstorms
Day 82°
Night 55°
Precipitation 97 %
Wind 10 mph
UV Index (0 - 11+) 6

West Allis Weather Forecast Updated

58 minutes ago
Last updated on

Air Quality in West Allis

NOW
24 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.48 µg/m³
PM10 2.54 µg/m³
O3 0.026 ppm
NO2 1.3 ppb
SO2 0.5 ppb
CO 0.10 ppm
NH3 0.68 µg/m³
NO 0.06 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.52.48 µg/m³
PM102.54 µg/m³
O351.13 µg/m³
NO22.43 µg/m³
SO21.22 µg/m³
CO116.01 µg/m³
NH30.68 µg/m³
NO0.06 µg/m³

Weather Alerts and Warnings for West Allis

Severe Future Possible

Flood Watch

Flood Watch issued June 11 at 11:02AM CDT until June 11 at 11:00PM CDT by NWS Milwaukee/Sullivan WI
Jun 11, 12:00 PM Jun 11, 11:00 PM
Several rounds of heavy rain are expected today and this evening.

WHAT: Flash flooding caused by excessive rainfall is possible.

WHERE: Portions of east central, south central, and southeast
Wisconsin, including the following counties, in east central
Wisconsin, Fond du Lac and Sheboygan. In south central Wisconsin,
Columbia, Dane, Green, Green Lake, Iowa, Lafayette, Marquette,
Rock and Sauk. In southeast Wisconsin, Dodge, Jefferson, Kenosha,
Milwaukee, Ozaukee, Racine, Walworth, Washington and Waukesha.

WHEN: Through this evening.

IMPACTS: Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas.

ADDITIONAL DETAILS:
- Several rounds of heavy rain are expected today and this
evening.
- http://www.weather.gov/safety/flood
+ Read More
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Updated: Jun 11, 2:15 PM Source: NWS Alert