Sauk County, Wisconsin, United States

Last updated: 2:42 PM CDT  ·  Refresh
26°C
Feels like 28°
Mostly Cloudy
▲ 27°  /  ▼ 18°
Wind
5 mph W
Humidity
78%
Dew Point
21°
Pressure
28.73 inHg
Visibility
10 mi
UV Index
6.0
Cloud Cover
77%
Sunrise
5:28 AM
Sunset
8:41 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Sauk County is currently mostly cloudy at 26°C. Precipitation is likely — peak probability 58% around 7 PM. Atmospheric instability is elevated (CAPE up to 1855 J/kg) — isolated convective development possible. Sunrise: 5:28AM · Sunset: 8:41PM.

Alerts

No active alerts for this location.
40 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
42%
3 PM
26°
40%
4 PM
26°
41%
5 PM
27°
43%
6 PM
27°
45%
7 PM
26°
58%
8 PM
24°
38%
9 PM
23°
21%
10 PM
23°
22%
11 PM
22°
10%
12 AM
21°
3%
1 AM
21°
3%
2 AM
20°
3%
3 AM
19°
3%
4 AM
19°
3%
5 AM
18°
3%
6 AM
19°
3%
7 AM
19°
3%
8 AM
20°
8%
9 AM
22°
8%
10 AM
23°
8%
11 AM
23°
8%
12 PM
24°
8%
1 PM
26°
8%
7-Day Forecast
Today
27° 18°
Partly Cloudy with a 43% chance of rain.
Fri
28° 18°
Mostly Cloudy.
Sat
31° 17°
Clear.
Sun
31° 18°
Clear.
Mon
30° 19°
Clear.
Tue
31° 19°
Clear.
Wed
28° 17°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Cloudy 42% 5 mph W 78%
3 PM 26° Partly Cloudy 40% 4 mph W 79%
4 PM 26° Partly Cloudy 41% 4 mph WNW 80%
5 PM 27° Partly Cloudy 43% 4 mph WNW 81%
6 PM 27° Partly Cloudy 45% 5 mph NW 82%
7 PM 26° Mostly Clear 58% 4 mph NNW 84%
8 PM 24° Partly Cloudy 38% 3 mph N 87%
9 PM 23° Mostly Clear 21% 3 mph NNE 89%
10 PM 23° Mostly Clear 22% 3 mph NE 91%
11 PM 22° Mostly Clear 10% 3 mph ENE 93%
12 AM 21° Mostly Clear 3% 3 mph ENE 94%
1 AM 21° Mostly Clear 3% 2 mph ENE 95%
2 AM 20° Partly Cloudy 3% 2 mph ENE 96%
3 AM 19° Haze 3% 3 mph ENE 98%
4 AM 19° Partly Cloudy 3% 3 mph ENE 98%
5 AM 18° Mostly Cloudy 3% 3 mph NE 98%
6 AM 19° Mostly Cloudy 3% 4 mph NE 97%
7 AM 19° Mostly Cloudy 3% 4 mph NE 94%
8 AM 20° Mostly Cloudy 8% 5 mph ENE 89%
9 AM 22° Mostly Cloudy 8% 5 mph ENE 84%
10 AM 23° Mostly Cloudy 8% 5 mph ENE 80%
11 AM 23° Partly Cloudy 8% 5 mph ENE 76%
12 PM 24° Partly Cloudy 8% 5 mph E 72%
1 PM 26° Partly Cloudy 8% 5 mph E 70%
15-Day Forecast
Today
7/9
Partly Cloudy
43%
18°
27°
Fri
7/10
Mostly Cloudy
9%
18°
28°
Sat
7/11
Clear
15%
17°
31°
Sun
7/12
Clear
17%
18°
31°
Mon
7/13
Clear
9%
19°
30°
Tue
7/14
Clear
19%
19°
31°
Wed
7/15
Clear
19%
17°
28°
Thu
7/16
Clear
60%
17°
28°
Fri
7/17
Drizzle
60%
17°
32°
Sat
7/18
Drizzle
60%
17°
28°
Sun
7/19
Drizzle
60%
11°
28°
Mon
7/20
Drizzle
60%
17°
27°
Tue
7/21
Drizzle
60%
17°
26°
Wed
7/22
Drizzle
60%
17°
27°
Thu
7/23
Drizzle
60%
17°
27°
40
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
16 AQI 3.0 µg/m³
O3
Ground-level ozone
Dominant
40 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Fri 40 Good 40 16
Sat 35 Good 35 25
Sun 38 Good 38 29
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 Thu Jul 9, 18:00'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
SBCAPE1924 J/kg
MLCAPE1190 J/kg
MUCAPE1924 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.4
Kinematics
0–6 km Shear20 kt
0–1 km Shear1 kt
Eff. Shear21 kt
0–1 km SRH2
0–3 km SRH-51
Eff. SRH-51
Storm Motion234° @ 24 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.5
Thermo & Levels
PWAT1.54 in
0–3 km LR6.6 °C/km
700–500 LR5.4 °C/km
Total Totals46.1
LCL911 hPa
LFC973 hPa
EL213 hPa
Freezing Lvl12,923 ft