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

Lafayette County, Wisconsin, United States

Last updated: 6:00 PM CDT  ·  Refresh
33°C
Feels like 43°
Clear
▲ 34°  /  ▼ 20°
Wind
14 mph W
Humidity
64%
Dew Point
24°
Pressure
28.66 inHg
Visibility
10 mi
UV Index
5.3
Cloud Cover
3%
Sunrise
5:47 AM
Sunset
8:26 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lafayette County is currently clear at 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2958 J/kg) — isolated convective development possible. Sunrise: 5:47AM · Sunset: 8:26PM.

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
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
4%
7 PM
33°
21%
8 PM
31°
21%
9 PM
29°
21%
10 PM
28°
21%
11 PM
27°
20%
12 AM
26°
20%
1 AM
24°
3%
2 AM
23°
3%
3 AM
23°
3%
4 AM
22°
3%
5 AM
22°
3%
6 AM
20°
3%
7 AM
20°
3%
8 AM
21°
3%
9 AM
22°
3%
10 AM
22°
3%
11 AM
23°
3%
12 PM
24°
3%
1 PM
28°
3%
2 PM
29°
3%
3 PM
29°
3%
4 PM
29°
3%
5 PM
29°
3%
7-Day Forecast
Tonight
34° 20°
Clear with a 21% chance of rain.
Tue
30° 18°
Partly Cloudy with a 20% chance of rain.
Wed
29° 17°
Clear.
Thu
34° 19°
Partly Cloudy with a 45% chance of rain.
Fri
29° 18°
Rain, 77% chance.
Sat
33° 17°
Drizzle, 71% chance.
Sun
32° 17°
Mostly Clear with a 21% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 33° Clear 4% 14 mph W 64%
7 PM 33° Clear 21% 14 mph WNW 66%
8 PM 31° Clear 21% 11 mph WNW 69%
9 PM 29° Clear 21% 9 mph NW 73%
10 PM 28° Clear 21% 9 mph NW 76%
11 PM 27° Clear 20% 8 mph NNW 78%
12 AM 26° Clear 20% 9 mph NNW 81%
1 AM 24° Mostly Clear 3% 10 mph N 84%
2 AM 23° Mostly Clear 3% 10 mph N 86%
3 AM 23° Partly Cloudy 3% 8 mph NNE 88%
4 AM 22° Partly Cloudy 3% 8 mph NNE 90%
5 AM 22° Mostly Cloudy 3% 8 mph NNE 90%
6 AM 20° Mostly Cloudy 3% 8 mph NNE 89%
7 AM 20° Partly Cloudy 3% 8 mph NNE 88%
8 AM 21° Partly Cloudy 3% 9 mph NNE 82%
9 AM 22° Mostly Clear 3% 8 mph NNE 76%
10 AM 22° Mostly Clear 3% 8 mph NNE 70%
11 AM 23° Mostly Clear 3% 8 mph NNE 64%
12 PM 24° Mostly Clear 3% 8 mph NNE 58%
1 PM 28° Mostly Clear 3% 7 mph NNE 55%
2 PM 29° Mostly Clear 3% 7 mph NE 54%
3 PM 29° Clear 3% 7 mph NE 52%
4 PM 29° Clear 3% 7 mph NE 51%
5 PM 29° Clear 3% 6 mph NE 55%
15-Day Forecast
Today
7/27
Clear
21%
20°
34°
Tue
7/28
Partly Cloudy
20%
18°
30°
Wed
7/29
Clear
12%
17°
29°
Thu
7/30
Partly Cloudy
45%
19°
34°
Fri
7/31
Rain
77%
18°
29°
Sat
8/1
Drizzle
71%
17°
33°
Sun
8/2
Mostly Clear
21%
17°
32°
Mon
8/3
Clear
15%
16°
33°
Tue
8/4
Drizzle
39%
19°
34°
Wed
8/5
Rain
58%
17°
32°
Thu
8/6
Drizzle
67%
17°
33°
Fri
8/7
Drizzle
60%
18°
33°
Sat
8/8
Rain
90%
18°
33°
Sun
8/9
Drizzle
60%
18°
33°
Mon
8/10
Clear
60%
17°
33°
51
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
51 AQI 9.1 µg/m³
O3
Ground-level ozone
35 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 51 Moderate 35 51
Wed 47 Good 37 47
Thu 52 Moderate 36 52
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
SBCAPE3900 J/kg
MLCAPE3484 J/kg
MUCAPE3900 J/kg
SBCIN-68 J/kg
MLCIN0 J/kg
Lifted Index-9.2
Kinematics
0–6 km Shear37 kt
0–1 km Shear8 kt
Eff. Shear45 kt
0–1 km SRH4
0–3 km SRH-76
Eff. SRH-76
Storm Motion281° @ 35 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.1
STP (eff)0.0
Supercell0.0
K-Index7.8
Thermo & Levels
PWAT1.48 in
0–3 km LR6.7 °C/km
700–500 LR7.4 °C/km
Total Totals52.5
LCL847 hPa
LFC779 hPa
EL130 hPa
Freezing Lvl15,509 ft