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: 7:53 PM CDT  ·  Refresh
31°C
Feels like 36°
Clear
▲ 34°  /  ▼ 19°
Wind
10 mph WNW
Humidity
64%
Dew Point
22°
Pressure
28.68 inHg
Visibility
10 mi
UV Index
1.4
Cloud Cover
1%
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 31°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1733 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
31°
11%
8 PM
29°
29%
9 PM
28°
21%
10 PM
27°
21%
11 PM
26°
21%
12 AM
24°
14%
1 AM
23°
3%
2 AM
23°
3%
3 AM
23°
3%
4 AM
22°
3%
5 AM
19°
3%
6 AM
19°
3%
7 AM
20°
3%
8 AM
21°
3%
9 AM
23°
3%
10 AM
24°
3%
11 AM
25°
3%
12 PM
26°
3%
1 PM
28°
3%
2 PM
30°
3%
3 PM
31°
3%
4 PM
30°
3%
5 PM
28°
3%
6 PM
28°
3%
7-Day Forecast
Tonight
34° 19°
Clear with a 21% chance of rain.
Tue
31° 18°
Mostly Clear.
Wed
29° 17°
Clear.
Thu
34° 19°
Partly Cloudy with a 26% chance of rain.
Fri
29° 18°
Rain, 75% chance.
Sat
32° 17°
Rain, 64% chance.
Sun
32° 16°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 31° Clear 11% 10 mph WNW 64%
8 PM 29° Clear 29% 8 mph WNW 70%
9 PM 28° Clear 21% 8 mph WNW 75%
10 PM 27° Clear 21% 8 mph NW 77%
11 PM 26° Clear 21% 9 mph NNW 80%
12 AM 24° Partly Cloudy 14% 10 mph N 83%
1 AM 23° Partly Cloudy 3% 9 mph N 85%
2 AM 23° Partly Cloudy 3% 9 mph NNE 88%
3 AM 23° Mostly Cloudy 3% 9 mph NNE 89%
4 AM 22° Mostly Cloudy 3% 9 mph NNE 89%
5 AM 19° Partly Cloudy 3% 8 mph NNE 88%
6 AM 19° Mostly Cloudy 3% 8 mph NNE 88%
7 AM 20° Partly Cloudy 3% 9 mph NNE 83%
8 AM 21° Partly Cloudy 3% 9 mph NNE 76%
9 AM 23° Mostly Clear 3% 9 mph NNE 70%
10 AM 24° Mostly Clear 3% 9 mph NNE 64%
11 AM 25° Mostly Clear 3% 8 mph NNE 58%
12 PM 26° Mostly Clear 3% 8 mph NNE 53%
1 PM 28° Mostly Clear 3% 7 mph NNE 51%
2 PM 30° Clear 3% 7 mph NNE 50%
3 PM 31° Clear 3% 7 mph NNE 49%
4 PM 30° Clear 3% 6 mph NE 53%
5 PM 28° Clear 3% 6 mph NE 57%
6 PM 28° Mostly Clear 3% 6 mph NE 61%
15-Day Forecast
Today
7/27
Clear
21%
19°
34°
Tue
7/28
Mostly Clear
3%
18°
31°
Wed
7/29
Clear
16%
17°
29°
Thu
7/30
Partly Cloudy
26%
19°
34°
Fri
7/31
Rain
75%
18°
29°
Sat
8/1
Rain
64%
17°
32°
Sun
8/2
Clear
17%
16°
32°
Mon
8/3
Clear
17%
15°
32°
Tue
8/4
Drizzle
44%
18°
34°
Wed
8/5
Rain
68%
18°
33°
Thu
8/6
Drizzle
60%
18°
31°
Fri
8/7
Drizzle
60%
18°
33°
Sat
8/8
Rain
90%
18°
33°
Sun
8/9
Drizzle
60%
17°
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
Today 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, 23:00'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
SBCAPE1883 J/kg
MLCAPE1392 J/kg
MUCAPE1883 J/kg
SBCIN-240 J/kg
MLCIN0 J/kg
Lifted Index-6.3
Kinematics
0–6 km Shear38 kt
0–1 km Shear11 kt
Eff. Shear39 kt
0–1 km SRH-36
0–3 km SRH-78
Eff. SRH-78
Storm Motion284° @ 33 kt
0–1 km EHI-0.4
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index-1.3
Thermo & Levels
PWAT1.24 in
0–3 km LR5.8 °C/km
700–500 LR7.5 °C/km
Total Totals51.0
LCL849 hPa
LFC631 hPa
EL186 hPa
Freezing Lvl15,735 ft