Excessive Heat Warning — Great Salt Lake Desert and Mountains, UT, Tooele and Rush Valleys, UT, Northern Wasatch Front, UT, Salt Lake Valley, UT, Western Millard and Juab Counties, UT, Castle Country, UT, San Rafael Swell, UT, Lower Washington County, UT, Zion National Park, UT, Glen Canyon Recreation Area/Lake Powell, UT, South Central Utah, UT, Capitol Reef National Park and Vicinity, UT, Western Canyonlands, UT, Eastern Box Elder County, UT, Utah Valley, UT, Cache Valley/Utah Portion, UT, Western Uinta Basin, UT, Eastern Juab/Millard Counties, UT, Sanpete Valley, UT, Sevier Valley, UT, Southwest Utah, UT, Upper Sevier River Valleys, UT, Bryce Canyon Country, UT 1:00 AM

Lower Mountain, Washington County, Utah, United States

Last updated: 2:24 AM CDT  ·  Refresh
25°C
Feels like 23°
Mostly Clear
▲ 35°  /  ▼ 19°
Wind
5 mph S
Humidity
35%
Dew Point
7°
Pressure
24.57 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
11%
Sunrise
6:42 AM
Sunset
8:31 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lower Mountain is currently mostly clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 584 J/kg) — isolated convective development possible. Sunrise: 6:42AM · Sunset: 8:31PM.

Alerts

Excessive Heat Warning
Great Salt Lake Desert and Mountains, UT, Tooele and Rush Valleys, UT, Northern Wasatch Front, UT, Salt Lake Valley, UT, Western Millard and Juab Counties, UT, Castle Country, UT, San Rafael Swell, UT, Lower Washington County, UT, Zion National Park, UT, Glen Canyon Recreation Area/Lake Powell, UT, South Central Utah, UT, Capitol Reef National Park and Vicinity, UT, Western Canyonlands, UT, Eastern Box Elder County, UT, Utah Valley, UT, Cache Valley/Utah Portion, UT, Western Uinta Basin, UT, Eastern Juab/Millard Counties, UT, Sanpete Valley, UT, Sevier Valley, UT, Southwest Utah, UT, Upper Sevier River Valleys, UT, Bryce Canyon Country, UT
Expires 1:00 AM
67 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
11%
2 AM
22°
3%
3 AM
22°
3%
4 AM
21°
3%
5 AM
21°
3%
6 AM
19°
3%
7 AM
19°
3%
8 AM
22°
3%
9 AM
24°
3%
10 AM
27°
3%
11 AM
29°
3%
12 PM
30°
3%
1 PM
31°
5%
2 PM
33°
5%
3 PM
33°
5%
4 PM
33°
5%
5 PM
33°
9%
6 PM
35°
9%
7 PM
33°
5%
8 PM
32°
5%
9 PM
31°
5%
10 PM
28°
5%
11 PM
27°
3%
12 AM
26°
3%
7-Day Forecast
Today
35° 19°
Mostly Clear.
Sun
36° 19°
Clear with a 20% chance of rain.
Mon
34° 19°
Mostly Clear.
Tue
32° 18°
Clear with a 37% chance of rain.
Wed
33° 17°
Rain, 64% chance.
Thu
32° 18°
Rain, 70% chance.
Fri
30° 17°
Drizzle, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 25° Mostly Clear 11% 5 mph S 35%
2 AM 22° Clear 3% 2 mph ENE 34%
3 AM 22° Mostly Clear 3% 2 mph E 35%
4 AM 21° Mostly Clear 3% 2 mph SE 37%
5 AM 21° Mostly Clear 3% 3 mph SE 38%
6 AM 19° Mostly Clear 3% 3 mph S 38%
7 AM 19° Mostly Clear 3% 4 mph SW 36%
8 AM 22° Mostly Clear 3% 3 mph W 34%
9 AM 24° Mostly Clear 3% 4 mph W 30%
10 AM 27° Partly Cloudy 3% 6 mph W 27%
11 AM 29° Partly Cloudy 3% 8 mph W 24%
12 PM 30° Mostly Clear 3% 10 mph WNW 22%
1 PM 31° Mostly Clear 5% 12 mph WNW 20%
2 PM 33° Clear 5% 12 mph W 18%
3 PM 33° Clear 5% 12 mph WNW 16%
4 PM 33° Mostly Clear 5% 12 mph W 16%
5 PM 33° Partly Cloudy 9% 14 mph W 16%
6 PM 35° Partly Cloudy 9% 12 mph W 16%
7 PM 33° Partly Cloudy 5% 10 mph WSW 19%
8 PM 32° Partly Cloudy 5% 8 mph WSW 22%
9 PM 31° Partly Cloudy 5% 7 mph SW 24%
10 PM 28° Partly Cloudy 5% 6 mph SSW 26%
11 PM 27° Partly Cloudy 3% 7 mph S 28%
12 AM 26° Partly Cloudy 3% 7 mph S 30%
15-Day Forecast
Today
8/8
Mostly Clear
11%
19°
35°
Sun
8/9
Clear
20%
19°
36°
Mon
8/10
Mostly Clear
17%
19°
34°
Tue
8/11
Clear
37%
18°
32°
Wed
8/12
Rain
64%
17°
33°
Thu
8/13
Rain
70%
18°
32°
Fri
8/14
Drizzle
63%
17°
30°
Sat
8/15
Rain
44%
16°
31°
Sun
8/16
Drizzle
44%
19°
33°
Mon
8/17
Clear
44%
19°
34°
Tue
8/18
Drizzle
60%
21°
32°
Wed
8/19
Drizzle
60%
20°
29°
Thu
8/20
Drizzle
60%
21°
30°
Fri
8/21
Drizzle
60%
21°
30°
Sat
8/22
Clear
25%
21°
31°
67
Moderate
U.S. Air Quality Index · Dominant: O3
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
29 AQI 5.3 µg/m³
O3
Ground-level ozone
Dominant
67 AQI 60 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 67 Moderate 67 29
Sun 61 Moderate 61 26
Mon 61 Moderate 61 17
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 Aug 8, 06:00'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
MLCAPE139 J/kg
MUCAPE274 J/kg
SBCIN-4744 J/kg
MLCIN0 J/kg
Lifted Index1.0
Kinematics
0–6 km Shear5 kt
0–1 km Shear13 kt
Eff. Shear22 kt
0–1 km SRH47
0–3 km SRH48
Eff. SRH5
Storm Motion58° @ 14 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index—
Thermo & Levels
PWAT0.91 in
0–3 km LR6.9 °C/km
700–500 LR8.6 °C/km
Total Totals—
LCL640 hPa
LFC—
EL—
Freezing Lvl11,444 ft