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

Rock County, Wisconsin, United States

Last updated: 6:00 PM CDT  ·  Refresh
32°C
Feels like 40°
Mostly Clear
▲ 34°  /  ▼ 19°
Wind
13 mph WSW
Humidity
67%
Dew Point
24°
Pressure
28.74 inHg
Visibility
9 mi
UV Index
5.2
Cloud Cover
15%
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 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3234 J/kg) — isolated convective development possible. Sunrise: 5:43AM · Sunset: 8:21PM.

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
50 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
32°
19%
7 PM
32°
35%
8 PM
30°
33%
9 PM
29°
33%
10 PM
28°
23%
11 PM
27°
23%
12 AM
25°
27%
1 AM
24°
26%
2 AM
23°
16%
3 AM
23°
13%
4 AM
22°
3%
5 AM
20°
3%
6 AM
20°
3%
7 AM
20°
3%
8 AM
21°
3%
9 AM
21°
3%
10 AM
22°
3%
11 AM
23°
3%
12 PM
24°
3%
1 PM
28°
3%
2 PM
28°
3%
3 PM
28°
3%
4 PM
28°
3%
5 PM
29°
3%
7-Day Forecast
Tonight
34° 19°
Mostly Clear with a 33% chance of rain.
Tue
29° 18°
Partly Cloudy with a 27% chance of rain.
Wed
31° 17°
Clear.
Thu
35° 19°
Fog with a 44% chance of rain.
Fri
30° 18°
Rain, 74% chance.
Sat
33° 17°
Drizzle, 83% chance.
Sun
33° 16°
Mostly Clear with a 31% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 32° Mostly Clear 19% 13 mph WSW 67%
7 PM 32° Partly Cloudy 35% 11 mph WSW 74%
8 PM 30° Clear 33% 10 mph WNW 75%
9 PM 29° Mostly Clear 33% 9 mph WNW 76%
10 PM 28° Mostly Clear 23% 9 mph WNW 78%
11 PM 27° Mostly Clear 23% 8 mph NW 80%
12 AM 25° Partly Cloudy 27% 9 mph NNW 83%
1 AM 24° Partly Cloudy 26% 12 mph N 87%
2 AM 23° Partly Cloudy 16% 12 mph NNE 92%
3 AM 23° Partly Cloudy 13% 12 mph NNE 93%
4 AM 22° Partly Cloudy 3% 11 mph NNE 95%
5 AM 20° Partly Cloudy 3% 10 mph NNE 93%
6 AM 20° Partly Cloudy 3% 10 mph N 90%
7 AM 20° Mostly Cloudy 3% 10 mph N 88%
8 AM 21° Partly Cloudy 3% 10 mph NNE 82%
9 AM 21° Partly Cloudy 3% 10 mph NNE 76%
10 AM 22° Partly Cloudy 3% 10 mph NNE 69%
11 AM 23° Partly Cloudy 3% 10 mph NNE 64%
12 PM 24° Mostly Clear 3% 10 mph NNE 59%
1 PM 28° Mostly Clear 3% 10 mph NNE 55%
2 PM 28° Mostly Clear 3% 10 mph NNE 54%
3 PM 28° Mostly Clear 3% 9 mph NNE 52%
4 PM 28° Mostly Clear 3% 9 mph NNE 50%
5 PM 29° Clear 3% 8 mph NNE 55%
15-Day Forecast
Today
7/27
Mostly Clear
33%
19°
34°
Tue
7/28
Partly Cloudy
27%
18°
29°
Wed
7/29
Clear
11%
17°
31°
Thu
7/30
Fog
44%
19°
35°
Fri
7/31
Rain
74%
18°
30°
Sat
8/1
Drizzle
83%
17°
33°
Sun
8/2
Mostly Clear
31%
16°
33°
Mon
8/3
Clear
18%
15°
33°
Tue
8/4
Clear
39%
19°
36°
Wed
8/5
Drizzle
46%
17°
34°
Thu
8/6
Drizzle
67%
16°
34°
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
Tue 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, 21:00'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
SBCAPE3842 J/kg
MLCAPE3588 J/kg
MUCAPE3870 J/kg
SBCIN-80 J/kg
MLCIN0 J/kg
Lifted Index-8.2
Kinematics
0–6 km Shear46 kt
0–1 km Shear11 kt
Eff. Shear49 kt
0–1 km SRH61
0–3 km SRH-23
Eff. SRH-23
Storm Motion278° @ 38 kt
0–1 km EHI1.5
Composite Parameters
Sig. Tornado1.3
STP (eff)0.0
Supercell0.0
K-Index18.3
Thermo & Levels
PWAT1.62 in
0–3 km LR6.5 °C/km
700–500 LR6.7 °C/km
Total Totals52.8
LCL871 hPa
LFC805 hPa
EL131 hPa
Freezing Lvl15,745 ft