Westby, Wisconsin

Last updated: 6:13 AM CDT  ·  Refresh
21°C
Feels like 23°
Partly Cloudy
▲ 28°  /  ▼ 19°
Wind
3 mph ESE
Humidity
94%
Dew Point
20°
Pressure
28.63 inHg
Visibility
7 mi
UV Index
0.7
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 2011 J/kg) — isolated convective development possible. Sunrise: 6:03AM · Sunset: 8:12PM.

Alerts

No active alerts for this location.
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
33%
7 AM
20°
49%
8 AM
21°
57%
9 AM
22°
82%
10 AM
23°
51%
11 AM
24°
38%
12 PM
26°
47%
1 PM
27°
34%
2 PM
27°
34%
3 PM
27°
34%
4 PM
27°
22%
5 PM
27°
22%
6 PM
27°
22%
7 PM
26°
22%
8 PM
24°
22%
9 PM
22°
22%
10 PM
21°
21%
11 PM
20°
21%
12 AM
20°
25%
1 AM
20°
25%
2 AM
20°
31%
3 AM
20°
41%
4 AM
19°
32%
5 AM
19°
33%
7-Day Forecast
Today
28° 19°
Partly Cloudy with a 82% chance of rain.
Wed
29° 19°
Fog with a 32% chance of rain.
Thu
28° 17°
Mostly Cloudy with a 32% chance of rain.
Fri
26° 14°
Mostly Cloudy with a 60% chance of rain.
Sat
29° 15°
Rain, 90% chance.
Sun
27° 15°
Drizzle, 78% chance.
Mon
28° 13°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 21° Partly Cloudy 33% 3 mph ESE 94%
7 AM 20° Mostly Cloudy 49% 5 mph SE 94%
8 AM 21° Mostly Cloudy 57% 5 mph SE 90%
9 AM 22° Mostly Cloudy 82% 7 mph SE 88%
10 AM 23° Mostly Cloudy 51% 7 mph ESE 85%
11 AM 24° Mostly Cloudy 38% 6 mph E 81%
12 PM 26° Mostly Cloudy 47% 4 mph E 78%
1 PM 27° 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 76%
5 PM 27° Partly Cloudy 22% 5 mph E 78%
6 PM 27° Mostly Clear 22% 4 mph ENE 80%
7 PM 26° Clear 22% 4 mph ENE 83%
8 PM 24° Clear 22% 4 mph ENE 87%
9 PM 22° 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 41% 3 mph ENE 96%
4 AM 19° Fog 32% 4 mph ENE 96%
5 AM 19° Fog 33% 3 mph ENE 96%
15-Day Forecast
Today
8/11
Partly Cloudy
82%
19°
28°
Wed
8/12
Fog
32%
19°
29°
Thu
8/13
Mostly Cloudy
32%
17°
28°
Fri
8/14
Mostly Cloudy
60%
14°
26°
Sat
8/15
Rain
90%
15°
29°
Sun
8/16
Drizzle
78%
15°
27°
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
66%
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°
55
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
55 AQI 11.1 µg/m³
O3
Ground-level ozone
34 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 34 55
Wed 53 Moderate 39 53
Thu 55 Moderate 32 55
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, 09:00'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
SBCAPE1064 J/kg
MLCAPE1153 J/kg
MUCAPE1658 J/kg
SBCIN-291 J/kg
MLCIN0 J/kg
Lifted Index-4.4
Kinematics
0–6 km Shear47 kt
0–1 km Shear3 kt
Eff. Shear53 kt
0–1 km SRH2
0–3 km SRH68
Eff. SRH166
Storm Motion314° @ 22 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)1.2
Supercell7.4
K-Index25.8
Thermo & Levels
PWAT1.44 in
0–3 km LR3.9 °C/km
700–500 LR7.8 °C/km
Total Totals53.9
LCL958 hPa
LFC629 hPa
EL220 hPa
Freezing Lvl13,465 ft