Severe Thunderstorm Warning — Rock County, WI 8:00 PM 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 Extreme Heat Warning — Sauk, WI, Columbia, WI, Iowa, WI, Dane, WI, Lafayette, WI, Green, WI, Rock, WI 9:00 PM

Rock County, Wisconsin, United States

Last updated: 7:45 PM CDT  ·  Refresh
29°C
Feels like 35°
Mostly Clear
▲ 34°  /  ▼ 19°
Wind
10 mph SSW
Humidity
78%
Dew Point
25°
Pressure
28.75 inHg
Visibility
10 mi
UV Index
1.6
Cloud Cover
24%
Sunrise
5:43 AM
Sunset
8:21 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Rock County is currently mostly clear at 29°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3190 J/kg) — isolated convective development possible. Sunrise: 5:43AM · Sunset: 8:21PM.

Alerts

Severe Thunderstorm Warning
Rock County, WI
Expires 8:00 PM
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
Extreme Heat Warning
Sauk, WI, Columbia, WI, Iowa, WI, Dane, WI, Lafayette, WI, Green, WI, Rock, WI
Expires 9:00 PM
50 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
32%
8 PM
28°
31%
9 PM
27°
23%
10 PM
26°
23%
11 PM
25°
25%
12 AM
24°
17%
1 AM
23°
9%
2 AM
23°
18%
3 AM
22°
3%
4 AM
22°
3%
5 AM
20°
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
27°
3%
2 PM
29°
3%
3 PM
29°
3%
4 PM
29°
3%
5 PM
29°
3%
6 PM
28°
3%
7-Day Forecast
Tonight
34° 19°
Mostly Clear with a 32% chance of rain.
Tue
29° 17°
Mostly Clear.
Wed
31° 17°
Mostly Clear.
Thu
35° 19°
Mostly Cloudy.
Fri
30° 18°
Heavy Rain, 90% chance.
Sat
33° 16°
Drizzle, 69% chance.
Sun
32° 15°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Clear 32% 10 mph SSW 78%
8 PM 28° Clear 31% 6 mph WSW 83%
9 PM 27° Clear 23% 7 mph WNW 82%
10 PM 26° Clear 23% 7 mph NW 80%
11 PM 25° Clear 25% 9 mph NNW 80%
12 AM 24° Mostly Clear 17% 11 mph N 84%
1 AM 23° Partly Cloudy 9% 12 mph N 89%
2 AM 23° Partly Cloudy 18% 12 mph NNE 91%
3 AM 22° Mostly Cloudy 3% 12 mph NNE 93%
4 AM 22° Mostly Cloudy 3% 11 mph NNE 92%
5 AM 20° Mostly Cloudy 3% 10 mph NNE 91%
6 AM 19° Mostly Cloudy 3% 10 mph NNE 89%
7 AM 20° Mostly Cloudy 3% 10 mph NNE 84%
8 AM 21° Partly Cloudy 3% 11 mph NNE 77%
9 AM 22° Partly Cloudy 3% 11 mph NNE 69%
10 AM 23° Mostly Clear 3% 11 mph NNE 64%
11 AM 24° Mostly Clear 3% 11 mph NNE 59%
12 PM 26° Clear 3% 11 mph NNE 55%
1 PM 27° Clear 3% 10 mph NNE 53%
2 PM 29° Clear 3% 10 mph NNE 51%
3 PM 29° Clear 3% 10 mph NNE 50%
4 PM 29° Clear 3% 9 mph NNE 52%
5 PM 29° Clear 3% 8 mph NNE 57%
6 PM 28° Clear 3% 8 mph NNE 61%
15-Day Forecast
Today
7/27
Mostly Clear
32%
19°
34°
Tue
7/28
Mostly Clear
9%
17°
29°
Wed
7/29
Mostly Clear
16%
17°
31°
Thu
7/30
Mostly Cloudy
14%
19°
35°
Fri
7/31
Heavy Rain
90%
18°
30°
Sat
8/1
Drizzle
69%
16°
33°
Sun
8/2
Clear
17%
15°
32°
Mon
8/3
Clear
17%
14°
33°
Tue
8/4
Drizzle
43%
17°
36°
Wed
8/5
Rain
68%
18°
35°
Thu
8/6
Rain
68%
18°
32°
Fri
8/7
Drizzle
60%
18°
34°
Sat
8/8
Rain
90%
18°
33°
Sun
8/9
Clear
60%
17°
34°
Mon
8/10
Drizzle
60%
17°
33°
50
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
50 AQI 9.0 µg/m³
O3
Ground-level ozone
42 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 50 Good 42 50
Wed 41 Good 37 41
Thu 51 Moderate 39 51
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 90 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3657 J/kg
MLCAPE4235 J/kg
MUCAPE4864 J/kg
SBCIN-123 J/kg
MLCIN0 J/kg
Lifted Index-8.8
Kinematics
0–6 km Shear54 kt
0–1 km Shear17 kt
Eff. Shear59 kt
0–1 km SRH5
0–3 km SRH-40
Eff. SRH-40
Storm Motion278° @ 35 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.2
STP (eff)0.0
Supercell0.0
K-Index36.0
Thermo & Levels
PWAT1.97 in
0–3 km LR6.0 °C/km
700–500 LR6.5 °C/km
Total Totals55.1
LCL915 hPa
LFC811 hPa
EL136 hPa
Freezing Lvl15,846 ft