Westby, Wisconsin

Last updated: 7:03 AM CDT  ·  Refresh
21°C
Feels like 23°
Partly Cloudy
▲ 28°  /  ▼ 19°
Wind
4 mph SE
Humidity
94%
Dew Point
20°
Pressure
28.63 inHg
Visibility
7 mi
UV Index
2.6
Cloud Cover
58%
Sunrise
6:03 AM
Sunset
8:12 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Westby is currently partly cloudy at 21°C. Precipitation is likely — peak probability 83% around 9 AM. Atmospheric instability is elevated (CAPE up to 2039 J/kg) — isolated convective development possible. Sunrise: 6:03AM · Sunset: 8:12PM.

Alerts

No active alerts for this location.
57 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
33%
8 AM
21°
56%
9 AM
22°
82%
10 AM
22°
52%
11 AM
24°
36%
12 PM
25°
41%
1 PM
26°
34%
2 PM
27°
34%
3 PM
27°
34%
4 PM
27°
22%
5 PM
27°
22%
6 PM
27°
22%
7 PM
27°
22%
8 PM
25°
22%
9 PM
24°
22%
10 PM
21°
21%
11 PM
20°
21%
12 AM
20°
25%
1 AM
20°
25%
2 AM
20°
31%
3 AM
20°
40%
4 AM
19°
31%
5 AM
19°
32%
6 AM
19°
32%
7-Day Forecast
Today
28° 19°
Partly Cloudy with a 52% chance of rain.
Wed
29° 19°
Fog with a 29% chance of rain.
Thu
28° 18°
Overcast with a 32% chance of rain.
Fri
26° 14°
Mostly Cloudy with a 58% chance of rain.
Sat
29° 15°
Rain, 90% chance.
Sun
28° 15°
Drizzle, 78% chance.
Mon
28° 13°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 21° Partly Cloudy 33% 4 mph SE 94%
8 AM 21° Mostly Cloudy 56% 5 mph SE 90%
9 AM 22° Mostly Cloudy 82% 7 mph SE 88%
10 AM 22° Mostly Cloudy 52% 8 mph ESE 86%
11 AM 24° Mostly Cloudy 36% 6 mph E 81%
12 PM 25° Mostly Cloudy 41% 4 mph E 78%
1 PM 26° Partly Cloudy 34% 5 mph ESE 77%
2 PM 27° Partly Cloudy 34% 5 mph E 76%
3 PM 27° Partly Cloudy 34% 6 mph E 76%
4 PM 27° Partly Cloudy 22% 6 mph E 75%
5 PM 27° Partly Cloudy 22% 5 mph E 78%
6 PM 27° Mostly Clear 22% 5 mph ENE 80%
7 PM 27° Clear 22% 4 mph E 82%
8 PM 25° Clear 22% 4 mph ENE 87%
9 PM 24° Mostly Clear 22% 4 mph ENE 91%
10 PM 21° Mostly Clear 21% 4 mph ENE 94%
11 PM 20° Partly Cloudy 21% 4 mph ENE 94%
12 AM 20° Partly Cloudy 25% 3 mph ENE 95%
1 AM 20° Fog 25% 3 mph ENE 95%
2 AM 20° Fog 31% 3 mph ENE 96%
3 AM 20° Fog 40% 3 mph ENE 96%
4 AM 19° Fog 31% 4 mph ENE 96%
5 AM 19° Fog 32% 3 mph ENE 96%
6 AM 19° Fog 32% 3 mph ENE 97%
15-Day Forecast
Today
8/11
Partly Cloudy
52%
19°
28°
Wed
8/12
Fog
29%
19°
29°
Thu
8/13
Overcast
32%
18°
28°
Fri
8/14
Mostly Cloudy
58%
14°
26°
Sat
8/15
Rain
90%
15°
29°
Sun
8/16
Drizzle
78%
15°
28°
Mon
8/17
Clear
15%
13°
28°
Tue
8/18
Rain
53%
15°
29°
Wed
8/19
Drizzle
54%
16°
31°
Thu
8/20
Rain
59%
17°
29°
Fri
8/21
Drizzle
60%
16°
29°
Sat
8/22
Drizzle
60%
16°
28°
Sun
8/23
Drizzle
60%
15°
28°
Mon
8/24
Drizzle
60%
15°
28°
Tue
8/25
Drizzle
60%
14°
28°
57
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
57 AQI 12.2 µg/m³
O3
Ground-level ozone
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 57 Moderate 39 57
Thu 56 Moderate 39 56
Fri 58 Moderate 35 58
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 Tue Aug 11, 10:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 90 100 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1055 J/kg
MLCAPE1086 J/kg
MUCAPE1564 J/kg
SBCIN-230 J/kg
MLCIN0 J/kg
Lifted Index-4.0
Kinematics
0–6 km Shear46 kt
0–1 km Shear4 kt
Eff. Shear46 kt
0–1 km SRH23
0–3 km SRH20
Eff. SRH20
Storm Motion308° @ 20 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.1
STP (eff)0.1
Supercell0.7
K-Index29.2
Thermo & Levels
PWAT1.46 in
0–3 km LR4.4 °C/km
700–500 LR7.2 °C/km
Total Totals52.9
LCL957 hPa
LFC646 hPa
EL222 hPa
Freezing Lvl13,307 ft