Cheyenne, Wyoming

Last updated: 4:22 AM CDT  ·  Refresh
24°C
Feels like 29°
Mostly Clear
▲ 36°  /  ▼ 25°
Wind
2 mph ENE
Humidity
90%
Dew Point
23°
Pressure
30.03 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
12%
Sunrise
6:27 AM
Sunset
7:52 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Cheyenne is currently mostly clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1874 J/kg) — isolated convective development possible. Sunrise: 6:27AM · Sunset: 7:52PM.

Alerts

No active alerts for this location.
47 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
4%
5 AM
23°
23%
6 AM
23°
23%
7 AM
24°
23%
8 AM
26°
23%
9 AM
28°
23%
10 AM
30°
24%
11 AM
32°
25%
12 PM
33°
25%
1 PM
35°
18%
2 PM
36°
21%
3 PM
36°
22%
4 PM
36°
25%
5 PM
34°
31%
6 PM
33°
31%
7 PM
32°
31%
8 PM
31°
31%
9 PM
29°
27%
10 PM
29°
15%
11 PM
28°
11%
12 AM
28°
5%
1 AM
28°
3%
2 AM
27°
5%
3 AM
27°
5%
7-Day Forecast
Today
36° 25°
Mostly Clear with a 31% chance of rain.
Sun
37° 25°
Partly Cloudy with a 35% chance of rain.
Mon
36° 24°
Partly Cloudy with a 57% chance of rain.
Tue
36° 24°
Partly Cloudy with a 45% chance of rain.
Wed
36° 24°
Drizzle, 51% chance.
Thu
37° 24°
Clear.
Fri
37° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 4% 2 mph ENE 90%
5 AM 23° Mostly Clear 23% 3 mph E 89%
6 AM 23° Partly Cloudy 23% 3 mph ENE 90%
7 AM 24° Partly Cloudy 23% 3 mph ENE 88%
8 AM 26° Mostly Clear 23% 2 mph ENE 80%
9 AM 28° Mostly Clear 23% 2 mph ENE 73%
10 AM 30° Clear 24% 2 mph ENE 66%
11 AM 32° Clear 25% 3 mph ENE 60%
12 PM 33° Mostly Clear 25% 3 mph E 54%
1 PM 35° Mostly Clear 18% 3 mph E 50%
2 PM 36° Mostly Clear 21% 4 mph ESE 49%
3 PM 36° Mostly Clear 22% 4 mph SE 48%
4 PM 36° Mostly Clear 25% 5 mph SE 49%
5 PM 34° Mostly Clear 31% 4 mph SE 53%
6 PM 33° Partly Cloudy 31% 5 mph SSE 57%
7 PM 32° Partly Cloudy 31% 6 mph SSE 63%
8 PM 31° Partly Cloudy 31% 5 mph S 70%
9 PM 29° Partly Cloudy 27% 5 mph S 76%
10 PM 29° Mostly Clear 15% 5 mph S 80%
11 PM 28° Mostly Clear 11% 4 mph S 84%
12 AM 28° Mostly Clear 5% 4 mph S 86%
1 AM 28° Mostly Clear 3% 3 mph S 88%
2 AM 27° Mostly Clear 5% 3 mph S 89%
3 AM 27° Mostly Clear 5% 2 mph S 90%
15-Day Forecast
Today
8/8
Mostly Clear
31%
25°
36°
Sun
8/9
Partly Cloudy
35%
25°
37°
Mon
8/10
Partly Cloudy
57%
24°
36°
Tue
8/11
Partly Cloudy
45%
24°
36°
Wed
8/12
Drizzle
51%
24°
36°
Thu
8/13
Clear
8%
24°
37°
Fri
8/14
Clear
8%
23°
37°
Sat
8/15
Clear
18%
24°
37°
Sun
8/16
Drizzle
44%
23°
38°
Mon
8/17
Drizzle
51%
23°
37°
Tue
8/18
Drizzle
60%
23°
37°
Wed
8/19
Drizzle
60%
23°
37°
Thu
8/20
Drizzle
60%
23°
38°
Fri
8/21
Drizzle
60%
23°
37°
Sat
8/22
Drizzle
60%
23°
37°
47
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
47 AQI 8.5 µg/m³
O3
Ground-level ozone
40 AQI 44 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 47 Good 40 47
Sun 32 Good 32 31
Mon 27 Good 27 26
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 Sat Aug 8, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE881 J/kg
MLCAPE388 J/kg
MUCAPE881 J/kg
SBCIN-156 J/kg
MLCIN0 J/kg
Lifted Index-4.0
Kinematics
0–6 km Shear4 kt
0–1 km Shear5 kt
Eff. Shear4 kt
0–1 km SRH4
0–3 km SRH-13
Eff. SRH-13
Storm Motion29° @ 14 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index26.7
Thermo & Levels
PWAT1.76 in
0–3 km LR4.8 °C/km
700–500 LR6.2 °C/km
Total Totals44.8
LCL995 hPa
LFC761 hPa
EL216 hPa
Freezing Lvl14,934 ft