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

Columbia County, Wisconsin, United States

Last updated: 6:01 PM CDT  ·  Refresh
32°C
Feels like 36°
Clear
▲ 33°  /  ▼ 18°
Wind
10 mph W
Humidity
54%
Dew Point
23°
Pressure
28.67 inHg
Visibility
10 mi
UV Index
5.2
Cloud Cover
7%
Sunrise
5:41 AM
Sunset
8:25 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Columbia County is currently clear at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2778 J/kg) — isolated convective development possible. Sunrise: 5:41AM · Sunset: 8:25PM.

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
Extreme Heat Warning
Sauk, WI, Columbia, WI, Iowa, WI, Dane, WI, Lafayette, WI, Green, WI, Rock, WI
Expires 9:00 PM
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
32°
3%
7 PM
32°
19%
8 PM
30°
20%
9 PM
29°
24%
10 PM
27°
23%
11 PM
26°
34%
12 AM
25°
14%
1 AM
23°
3%
2 AM
23°
3%
3 AM
22°
6%
4 AM
22°
6%
5 AM
19°
6%
6 AM
19°
3%
7 AM
19°
3%
8 AM
20°
3%
9 AM
22°
3%
10 AM
23°
3%
11 AM
24°
3%
12 PM
25°
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
33° 18°
Clear with a 24% chance of rain.
Tue
29° 18°
Mostly Clear.
Wed
32° 17°
Mostly Clear with a 20% chance of rain.
Thu
37° 19°
Fog with a 55% chance of rain.
Fri
32° 18°
Rain, 66% chance.
Sat
34° 16°
Drizzle, 56% chance.
Sun
33° 16°
Partly Cloudy with a 21% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 32° Clear 3% 10 mph W 54%
7 PM 32° Clear 19% 10 mph W 57%
8 PM 30° Clear 20% 7 mph NW 61%
9 PM 29° Clear 24% 6 mph NNW 66%
10 PM 27° Clear 23% 8 mph N 72%
11 PM 26° Partly Cloudy 34% 10 mph NNE 80%
12 AM 25° Partly Cloudy 14% 10 mph NNE 87%
1 AM 23° Mostly Cloudy 3% 10 mph NNE 91%
2 AM 23° Partly Cloudy 3% 10 mph NNE 92%
3 AM 22° Partly Cloudy 6% 10 mph NNE 92%
4 AM 22° Partly Cloudy 6% 9 mph NNE 92%
5 AM 19° Partly Cloudy 6% 9 mph NNE 90%
6 AM 19° Partly Cloudy 3% 8 mph NNE 88%
7 AM 19° Partly Cloudy 3% 9 mph NNE 86%
8 AM 20° Partly Cloudy 3% 9 mph NNE 79%
9 AM 22° Mostly Clear 3% 9 mph NNE 71%
10 AM 23° Mostly Clear 3% 10 mph NNE 63%
11 AM 24° Mostly Clear 3% 9 mph NNE 57%
12 PM 25° Clear 3% 9 mph NE 51%
1 PM 28° Clear 3% 9 mph NE 46%
2 PM 28° Clear 3% 9 mph NE 46%
3 PM 28° Clear 3% 8 mph NE 45%
4 PM 28° Clear 3% 8 mph NE 45%
5 PM 29° Clear 3% 7 mph ENE 49%
15-Day Forecast
Today
7/27
Clear
24%
18°
33°
Tue
7/28
Mostly Clear
14%
18°
29°
Wed
7/29
Mostly Clear
20%
17°
32°
Thu
7/30
Fog
55%
19°
37°
Fri
7/31
Rain
66%
18°
32°
Sat
8/1
Drizzle
56%
16°
34°
Sun
8/2
Partly Cloudy
21%
16°
33°
Mon
8/3
Partly Cloudy
15%
14°
34°
Tue
8/4
Clear
35%
19°
37°
Wed
8/5
Mostly Clear
35%
17°
34°
Thu
8/6
Drizzle
67%
15°
35°
Fri
8/7
Drizzle
60%
17°
34°
Sat
8/8
Rain
90%
17°
33°
Sun
8/9
Drizzle
60%
17°
34°
Mon
8/10
Clear
60%
16°
34°
52
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
52 AQI 9.8 µg/m³
O3
Ground-level ozone
43 AQI 47 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 52 Moderate 43 52
Wed 36 Good 36 34
Thu 53 Moderate 38 53
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 90 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2992 J/kg
MLCAPE1717 J/kg
MUCAPE2992 J/kg
SBCIN-145 J/kg
MLCIN0 J/kg
Lifted Index-8.1
Kinematics
0–6 km Shear51 kt
0–1 km Shear13 kt
Eff. Shear50 kt
0–1 km SRH-23
0–3 km SRH-61
Eff. SRH-61
Storm Motion279° @ 36 kt
0–1 km EHI-0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index24.6
Thermo & Levels
PWAT1.37 in
0–3 km LR6.9 °C/km
700–500 LR6.7 °C/km
Total Totals52.8
LCL850 hPa
LFC787 hPa
EL159 hPa
Freezing Lvl15,607 ft