Cheyenne, Wyoming

Last updated: 4:32 AM CDT  ·  Refresh
12°C
Feels like 8°
Clear
▲ 25°  /  ▼ 12°
Wind
9 mph W
Humidity
61%
Dew Point
5°
Pressure
23.99 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
2%
Sunrise
6:49 AM
Sunset
6:49 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Cheyenne is currently clear at 12°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:49AM · Sunset: 6:49PM.

Alerts

No active alerts for this location.
44 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
12°
3%
4 AM
12°
3%
5 AM
11°
3%
6 AM
11°
3%
7 AM
13°
3%
8 AM
16°
3%
9 AM
18°
3%
10 AM
19°
3%
11 AM
21°
3%
12 PM
22°
3%
1 PM
24°
3%
2 PM
25°
3%
3 PM
25°
3%
4 PM
24°
3%
5 PM
24°
3%
6 PM
23°
3%
7 PM
22°
3%
8 PM
21°
3%
9 PM
19°
3%
10 PM
17°
3%
11 PM
17°
3%
12 AM
16°
3%
1 AM
17°
3%
2 AM
15°
3%
7-Day Forecast
Today
25° 12°
Partly Cloudy.
Sun
26° 12°
Mostly Cloudy with a 65% chance of rain.
Mon
21° 11°
Rain, 64% chance.
Tue
17° 9°
Overcast with a 61% chance of rain.
Wed
19° 11°
Clear with a 37% chance of rain.
Thu
20° 11°
Clear.
Fri
19° 8°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 12° Clear 3% 9 mph W 61%
4 AM 12° Clear 3% 11 mph W 54%
5 AM 11° Clear 3% 11 mph WNW 54%
6 AM 11° Clear 3% 11 mph WNW 50%
7 AM 13° Clear 3% 13 mph WNW 46%
8 AM 16° Clear 3% 15 mph WNW 40%
9 AM 18° Clear 3% 16 mph WNW 35%
10 AM 19° Clear 3% 14 mph NW 30%
11 AM 21° Clear 3% 12 mph NW 26%
12 PM 22° Mostly Clear 3% 10 mph NW 23%
1 PM 24° Partly Cloudy 3% 8 mph NW 21%
2 PM 25° Partly Cloudy 3% 6 mph WNW 18%
3 PM 25° Partly Cloudy 3% 5 mph WNW 18%
4 PM 24° Mostly Cloudy 3% 4 mph W 21%
5 PM 24° Partly Cloudy 3% 4 mph S 24%
6 PM 23° Partly Cloudy 3% 6 mph S 27%
7 PM 22° Mostly Cloudy 3% 6 mph S 29%
8 PM 21° Mostly Cloudy 3% 6 mph SSW 31%
9 PM 19° Partly Cloudy 3% 6 mph SSW 34%
10 PM 17° Partly Cloudy 3% 6 mph SSW 36%
11 PM 17° Partly Cloudy 3% 6 mph SSW 37%
12 AM 16° Partly Cloudy 3% 6 mph SSW 38%
1 AM 17° Partly Cloudy 3% 6 mph SSW 40%
2 AM 15° Partly Cloudy 3% 5 mph SW 41%
15-Day Forecast
Today
9/26
Partly Cloudy
3%
12°
25°
Sun
9/27
Mostly Cloudy
65%
12°
26°
Mon
9/28
Rain
64%
11°
21°
Tue
9/29
Overcast
61%
9°
17°
Wed
9/30
Clear
37%
11°
19°
Thu
10/1
Clear
17%
11°
20°
Fri
10/2
Clear
16%
8°
19°
Sat
10/3
Snow
69%
-2°
14°
Sun
10/4
Snow
68%
-5°
10°
Mon
10/5
Clear
19%
-4°
17°
Tue
10/6
Clear
25%
9°
21°
Wed
10/7
Clear
3%
10°
21°
Thu
10/8
Clear
3%
10°
22°
Fri
10/9
Clear
25%
10°
22°
Sat
10/10
Clear
3%
10°
21°
44
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
15 AQI 2.8 µg/m³
O3
Ground-level ozone
Dominant
44 AQI 47 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 44 Good 44 15
Sun 43 Good 43 9
Mon 49 Good 49 13
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sat Sep 26, 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
SBCAPE0 J/kg
MLCAPE18 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index4.8
Kinematics
0–6 km Shear18 kt
0–1 km Shear28 kt
Eff. Shear—
0–1 km SRH68
0–3 km SRH80
Eff. SRH—
Storm Motion309° @ 32 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index—
Thermo & Levels
PWAT0.43 in
0–3 km LR5.6 °C/km
700–500 LR7.6 °C/km
Total Totals—
LCL729 hPa
LFC—
EL—
Freezing Lvl7,690 ft