Heat Advisory — Sauk, WI, Columbia, WI, Iowa, WI, Dane, WI, Lafayette, WI, Green, WI, Rock, WI, Fond Du Lac, WI, Sheboygan, WI, Washington, WI, Ozaukee, WI, Waukesha, WI, Milwaukee, WI, Racine, WI, Kenosha, WI, Marquette, WI, Green Lake, WI, Dodge, WI, Jefferson, WI, Walworth, WI 9:00 PM

Walworth County, Wisconsin, United States

Last updated: 7:36 PM CDT  ·  Refresh
27°C
Feels like 30°
Mostly Clear
▲ 31°  /  ▼ 19°
Wind
11 mph SSW
Humidity
80%
Dew Point
23°
Pressure
28.65 inHg
Visibility
10 mi
UV Index
1.9
Cloud Cover
22%
Sunrise
5:41 AM
Sunset
8:19 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Walworth County is currently mostly clear at 27°C. Precipitation is likely — peak probability 58% around 7 PM. Atmospheric instability is elevated (CAPE up to 2230 J/kg) — isolated convective development possible. Sunrise: 5:41AM · Sunset: 8:19PM.

Alerts

Heat Advisory
Sauk, WI, Columbia, WI, Iowa, WI, Dane, WI, Lafayette, WI, Green, WI, Rock, WI, Fond Du Lac, WI, Sheboygan, WI, Washington, WI, Ozaukee, WI, Waukesha, WI, Milwaukee, WI, Racine, WI, Kenosha, WI, Marquette, WI, Green Lake, WI, Dodge, WI, Jefferson, WI, Walworth, WI
Expires 9:00 PM
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
57%
8 PM
26°
41%
9 PM
26°
23%
10 PM
25°
23%
11 PM
24°
25%
12 AM
23°
17%
1 AM
22°
6%
2 AM
22°
3%
3 AM
21°
3%
4 AM
21°
3%
5 AM
19°
3%
6 AM
19°
3%
7 AM
20°
3%
8 AM
21°
3%
9 AM
22°
3%
10 AM
23°
3%
11 AM
24°
3%
12 PM
26°
3%
1 PM
26°
3%
2 PM
27°
3%
3 PM
27°
3%
4 PM
26°
3%
5 PM
27°
3%
6 PM
26°
3%
7-Day Forecast
Tonight
31° 19°
Mostly Clear with a 57% chance of rain.
Tue
27° 17°
Mostly Clear.
Wed
30° 16°
Clear.
Thu
33° 19°
Partly Cloudy with a 25% chance of rain.
Fri
28° 18°
Rain, 90% chance.
Sat
32° 16°
Drizzle, 69% chance.
Sun
30° 15°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Clear 57% 11 mph SSW 80%
8 PM 26° Mostly Clear 41% 10 mph SW 86%
9 PM 26° Clear 23% 9 mph SW 87%
10 PM 25° Mostly Clear 23% 7 mph W 87%
11 PM 24° Partly Cloudy 25% 7 mph NW 87%
12 AM 23° Partly Cloudy 17% 10 mph N 89%
1 AM 22° Mostly Cloudy 6% 12 mph N 91%
2 AM 22° Mostly Cloudy 3% 12 mph NNE 92%
3 AM 21° Mostly Cloudy 3% 12 mph NNE 93%
4 AM 21° Mostly Cloudy 3% 11 mph N 92%
5 AM 19° Partly Cloudy 3% 10 mph N 91%
6 AM 19° Partly Cloudy 3% 10 mph N 89%
7 AM 20° Partly Cloudy 3% 11 mph N 84%
8 AM 21° Partly Cloudy 3% 11 mph NNE 76%
9 AM 22° Mostly Clear 3% 12 mph NNE 70%
10 AM 23° Mostly Clear 3% 12 mph NNE 64%
11 AM 24° Mostly Clear 3% 12 mph NNE 58%
12 PM 26° Clear 3% 12 mph NNE 54%
1 PM 26° Clear 3% 12 mph NNE 51%
2 PM 27° Clear 3% 11 mph NNE 49%
3 PM 27° Clear 3% 11 mph NNE 48%
4 PM 26° Clear 3% 10 mph NNE 50%
5 PM 27° Clear 3% 9 mph NNE 53%
6 PM 26° Clear 3% 9 mph NE 56%
15-Day Forecast
Today
7/27
Mostly Clear
57%
19°
31°
Tue
7/28
Mostly Clear
6%
17°
27°
Wed
7/29
Clear
7%
16°
30°
Thu
7/30
Partly Cloudy
25%
19°
33°
Fri
7/31
Rain
90%
18°
28°
Sat
8/1
Drizzle
69%
16°
32°
Sun
8/2
Clear
17%
15°
30°
Mon
8/3
Clear
17%
14°
32°
Tue
8/4
Clear
42%
17°
33°
Wed
8/5
Drizzle
44%
18°
33°
Thu
8/6
Drizzle
60%
18°
31°
Fri
8/7
Drizzle
60%
18°
32°
Sat
8/8
Rain
90%
18°
31°
Sun
8/9
Clear
60%
18°
31°
Mon
8/10
Drizzle
60%
17°
31°
51
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
51 AQI 9.1 µg/m³
O3
Ground-level ozone
40 AQI 44 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 51 Moderate 40 51
Wed 33 Good 33 31
Thu 47 Good 41 47
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Mon Jul 27, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2063 J/kg
MLCAPE3545 J/kg
MUCAPE4731 J/kg
SBCIN-141 J/kg
MLCIN0 J/kg
Lifted Index-5.8
Kinematics
0–6 km Shear56 kt
0–1 km Shear17 kt
Eff. Shear58 kt
0–1 km SRH99
0–3 km SRH28
Eff. SRH28
Storm Motion278° @ 37 kt
0–1 km EHI1.3
Composite Parameters
Sig. Tornado2.0
STP (eff)0.2
Supercell4.0
K-Index31.2
Thermo & Levels
PWAT1.90 in
0–3 km LR5.1 °C/km
700–500 LR6.6 °C/km
Total Totals54.3
LCL919 hPa
LFC772 hPa
EL182 hPa
Freezing Lvl15,758 ft