Excessive Heat Watch 10:00 PM Excessive Heat Warning — Lower Washington County, UT, Zion National Park, UT, South Central Utah, UT, Capitol Reef National Park and Vicinity, UT, Western Canyonlands, UT, Glen Canyon Recreation Area/Lake Powell, UT, Great Salt Lake Desert and Mountains, UT, Eastern Juab/Millard Counties, UT, Castle Country, UT, San Rafael Swell, UT, Tooele and Rush Valleys, UT, Northern Wasatch Front, UT, Salt Lake Valley, UT, Utah Valley, UT, Western Uinta Basin, UT, Western Millard and Juab Counties, UT, Southwest Utah, UT 10:00 PM

Lower Mountain, Washington County, Utah, United States

Last updated: 6:24 PM CDT  ·  Refresh
27°C
Feels like 27°
Mostly Clear
▲ 29°  /  ▼ 18°
Wind
4 mph NW
Humidity
45%
Dew Point
13°
Pressure
24.46 inHg
Visibility
10 mi
UV Index
6.9
Cloud Cover
24%
Sunrise
6:33 AM
Sunset
8:41 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lower Mountain is currently mostly clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 877 J/kg) — isolated convective development possible. Sunrise: 6:33AM · Sunset: 8:41PM.

Alerts

Excessive Heat Watch
Expires 10:00 PM
Excessive Heat Warning
Lower Washington County, UT, Zion National Park, UT, South Central Utah, UT, Capitol Reef National Park and Vicinity, UT, Western Canyonlands, UT, Glen Canyon Recreation Area/Lake Powell, UT, Great Salt Lake Desert and Mountains, UT, Eastern Juab/Millard Counties, UT, Castle Country, UT, San Rafael Swell, UT, Tooele and Rush Valleys, UT, Northern Wasatch Front, UT, Salt Lake Valley, UT, Utah Valley, UT, Western Uinta Basin, UT, Western Millard and Juab Counties, UT, Southwest Utah, UT
Expires 10:00 PM
47 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
18%
6 PM
26°
17%
7 PM
26°
17%
8 PM
25°
10%
9 PM
24°
8%
10 PM
23°
8%
11 PM
22°
3%
12 AM
21°
3%
1 AM
21°
3%
2 AM
20°
3%
3 AM
20°
3%
4 AM
19°
3%
5 AM
19°
3%
6 AM
18°
3%
7 AM
19°
3%
8 AM
21°
3%
9 AM
23°
3%
10 AM
23°
3%
11 AM
24°
3%
12 PM
27°
3%
1 PM
28°
3%
2 PM
31°
3%
3 PM
31°
3%
4 PM
31°
3%
7-Day Forecast
Today
29° 18°
Mostly Clear.
Thu
33° 18°
Clear.
Fri
34° 20°
Clear.
Sat
36° 20°
Clear.
Sun
37° 22°
Clear.
Mon
36° 22°
Clear.
Tue
36° 21°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Clear 18% 4 mph NW 45%
6 PM 26° Clear 17% 5 mph W 41%
7 PM 26° Clear 17% 4 mph S 42%
8 PM 25° Mostly Clear 10% 3 mph SE 43%
9 PM 24° Mostly Clear 8% 3 mph ESE 45%
10 PM 23° Clear 8% 3 mph ESE 46%
11 PM 22° Clear 3% 4 mph ESE 48%
12 AM 21° Clear 3% 5 mph ESE 51%
1 AM 21° Clear 3% 5 mph ESE 53%
2 AM 20° Clear 3% 6 mph ESE 55%
3 AM 20° Clear 3% 6 mph ESE 56%
4 AM 19° Clear 3% 6 mph ESE 58%
5 AM 19° Clear 3% 6 mph SE 59%
6 AM 18° Clear 3% 5 mph SE 57%
7 AM 19° Clear 3% 5 mph SE 53%
8 AM 21° Clear 3% 4 mph SSE 47%
9 AM 23° Clear 3% 4 mph S 40%
10 AM 23° Clear 3% 4 mph SSW 33%
11 AM 24° Clear 3% 5 mph SW 27%
12 PM 27° Clear 3% 6 mph WSW 23%
1 PM 28° Clear 3% 5 mph WSW 22%
2 PM 31° Clear 3% 5 mph WSW 22%
3 PM 31° Clear 3% 6 mph W 21%
4 PM 31° Clear 3% 7 mph W 21%
15-Day Forecast
Today
7/29
Mostly Clear
18%
18°
29°
Thu
7/30
Clear
3%
18°
33°
Fri
7/31
Clear
3%
20°
34°
Sat
8/1
Clear
3%
20°
36°
Sun
8/2
Clear
3%
22°
37°
Mon
8/3
Clear
3%
22°
36°
Tue
8/4
Clear
7%
21°
36°
Wed
8/5
Mostly Clear
14%
21°
35°
Thu
8/6
Rain
66%
21°
33°
Fri
8/7
Drizzle
47%
18°
32°
Sat
8/8
Drizzle
60%
18°
31°
Sun
8/9
Clear
25%
22°
31°
Mon
8/10
Clear
25%
22°
31°
Tue
8/11
Drizzle
60%
22°
30°
Wed
8/12
Drizzle
60%
22°
30°
47
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
17 AQI 3.1 µg/m³
O3
Ground-level ozone
Dominant
47 AQI 52 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 47 Good 47 17
Fri 50 Good 50 19
Sat 58 Moderate 58 16
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 Wed Jul 29, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE828 J/kg
MLCAPE385 J/kg
MUCAPE828 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-3.0
Kinematics
0–6 km Shear24 kt
0–1 km Shear13 kt
Eff. Shear23 kt
0–1 km SRH-42
0–3 km SRH-49
Eff. SRH-49
Storm Motion203° @ 22 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index—
Thermo & Levels
PWAT1.07 in
0–3 km LR8.2 °C/km
700–500 LR6.8 °C/km
Total Totals—
LCL680 hPa
LFC828 hPa
EL209 hPa
Freezing Lvl10,814 ft