Severe Thunderstorm Watch 10:00 PM Severe Thunderstorm Watch 10:00 PM

Sauk County, Wisconsin, United States

Last updated: 9:11 PM CDT  ·  Refresh
21°C
Feels like 21°
Mostly Clear
▲ 25°  /  ▼ 14°
Wind
6 mph NW
Humidity
74%
Dew Point
17°
Pressure
28.80 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
10%
Sunrise
6:11 AM
Sunset
7:53 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Sauk County is currently mostly clear at 21°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 863 J/kg) — isolated convective development possible. Sunrise: 6:11AM · Sunset: 7:53PM.

Alerts

Severe Thunderstorm Watch
Expires 10:00 PM
Severe Thunderstorm Watch
Expires 10:00 PM
32 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
3%
10 PM
20°
14%
11 PM
19°
14%
12 AM
17°
14%
1 AM
17°
3%
2 AM
17°
3%
3 AM
17°
3%
4 AM
16°
4%
5 AM
15°
4%
6 AM
15°
5%
7 AM
15°
5%
8 AM
17°
5%
9 AM
18°
15%
10 AM
20°
3%
11 AM
21°
3%
12 PM
22°
3%
1 PM
24°
3%
2 PM
24°
3%
3 PM
24°
3%
4 PM
26°
3%
5 PM
24°
3%
6 PM
23°
3%
7 PM
23°
3%
8 PM
21°
3%
7-Day Forecast
Tonight
25° 14°
Mostly Clear.
Sat
26° 14°
Clear.
Sun
23° 10°
Mostly Clear.
Mon
21° 9°
Mostly Cloudy with a 60% chance of rain.
Tue
24° 12°
Drizzle, 64% chance.
Wed
27° 16°
Rain, 64% chance.
Thu
26° 14°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 21° Mostly Clear 3% 6 mph NW 74%
10 PM 20° Clear 14% 8 mph NNW 71%
11 PM 19° Clear 14% 7 mph NNW 76%
12 AM 17° Clear 14% 7 mph NNW 81%
1 AM 17° Clear 3% 6 mph NNW 85%
2 AM 17° Clear 3% 5 mph NW 84%
3 AM 17° Clear 3% 5 mph NW 84%
4 AM 16° Clear 4% 5 mph WNW 84%
5 AM 15° Clear 4% 5 mph WNW 85%
6 AM 15° Clear 5% 5 mph WNW 87%
7 AM 15° Clear 5% 5 mph WNW 87%
8 AM 17° Clear 5% 7 mph NW 82%
9 AM 18° Clear 15% 10 mph NW 78%
10 AM 20° Clear 3% 11 mph NW 73%
11 AM 21° Clear 3% 12 mph NW 66%
12 PM 22° Clear 3% 13 mph NW 60%
1 PM 24° Clear 3% 14 mph NW 54%
2 PM 24° Mostly Clear 3% 14 mph NW 54%
3 PM 24° Mostly Clear 3% 14 mph NW 54%
4 PM 26° Mostly Clear 3% 13 mph NW 54%
5 PM 24° Mostly Clear 3% 12 mph NW 56%
6 PM 23° Mostly Clear 3% 11 mph NW 59%
7 PM 23° Mostly Clear 3% 11 mph NW 60%
8 PM 21° Mostly Clear 3% 9 mph NW 60%
15-Day Forecast
Today
8/21
Mostly Clear
3%
14°
25°
Sat
8/22
Clear
15%
14°
26°
Sun
8/23
Mostly Clear
3%
10°
23°
Mon
8/24
Mostly Cloudy
60%
9°
21°
Tue
8/25
Drizzle
64%
12°
24°
Wed
8/26
Rain
64%
16°
27°
Thu
8/27
Clear
17%
14°
26°
Fri
8/28
Clear
17%
15°
27°
Sat
8/29
Drizzle
65%
15°
27°
Sun
8/30
Drizzle
66%
18°
29°
Mon
8/31
Drizzle
60%
16°
28°
Tue
9/1
Drizzle
60%
17°
27°
Wed
9/2
Drizzle
60%
16°
26°
Thu
9/3
Clear
60%
15°
25°
Fri
9/4
Clear
60%
14°
26°
32
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
27 AQI 4.8 µg/m³
O3
Ground-level ozone
Dominant
32 AQI 35 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 32 Good 32 27
Sun 25 Good 25 16
Mon 22 Good 22 7
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 Fri Aug 21, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE329 J/kg
MLCAPE994 J/kg
MUCAPE1757 J/kg
SBCIN-191 J/kg
MLCIN-59 J/kg
Lifted Index-0.8
Kinematics
0–6 km Shear30 kt
0–1 km Shear15 kt
Eff. Shear27 kt
0–1 km SRH53
0–3 km SRH66
Eff. SRH66
Storm Motion342° @ 25 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.1
STP (eff)0.2
Supercell1.6
K-Index28.0
Thermo & Levels
PWAT1.22 in
0–3 km LR5.5 °C/km
700–500 LR5.7 °C/km
Total Totals48.9
LCL929 hPa
LFC571 hPa
EL258 hPa
Freezing Lvl12,671 ft