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

Zion National Park, Washington County, Utah, United States

Last updated: 6:24 PM CDT  ·  Refresh
24°C
Feels like 23°
Mostly Clear
▲ 27°  /  ▼ 15°
Wind
4 mph WSW
Humidity
50%
Dew Point
13°
Pressure
23.75 inHg
Visibility
10 mi
UV Index
6.8
Cloud Cover
25%
Sunrise
6:33 AM
Sunset
8:42 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Zion National Park is currently mostly clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 705 J/kg) — isolated convective development possible. Sunrise: 6:33AM · Sunset: 8:42PM.

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
24°
28%
6 PM
23°
16%
7 PM
22°
16%
8 PM
22°
8%
9 PM
21°
6%
10 PM
19°
4%
11 PM
19°
4%
12 AM
18°
4%
1 AM
18°
4%
2 AM
18°
4%
3 AM
17°
3%
4 AM
17°
3%
5 AM
17°
3%
6 AM
15°
3%
7 AM
17°
3%
8 AM
18°
3%
9 AM
21°
3%
10 AM
21°
3%
11 AM
22°
3%
12 PM
25°
3%
1 PM
26°
3%
2 PM
28°
3%
3 PM
29°
3%
4 PM
29°
3%
7-Day Forecast
Today
27° 15°
Mostly Clear with a 28% chance of rain.
Thu
31° 15°
Clear.
Fri
32° 18°
Clear.
Sat
34° 18°
Clear.
Sun
35° 19°
Clear.
Mon
34° 19°
Clear.
Tue
34° 19°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 28% 4 mph WSW 50%
6 PM 23° Clear 16% 5 mph WSW 44%
7 PM 22° Clear 16% 4 mph WSW 48%
8 PM 22° Mostly Clear 8% 2 mph WSW 50%
9 PM 21° Mostly Clear 6% 2 mph NW 52%
10 PM 19° Clear 4% 3 mph NE 54%
11 PM 19° Clear 4% 3 mph ENE 55%
12 AM 18° Clear 4% 4 mph ENE 56%
1 AM 18° Clear 4% 5 mph ENE 57%
2 AM 18° Clear 4% 5 mph ENE 57%
3 AM 17° Clear 3% 5 mph ENE 58%
4 AM 17° Clear 3% 5 mph ENE 59%
5 AM 17° Clear 3% 5 mph ENE 60%
6 AM 15° Clear 3% 4 mph ENE 58%
7 AM 17° Clear 3% 4 mph ENE 54%
8 AM 18° Clear 3% 3 mph E 49%
9 AM 21° Clear 3% 3 mph SE 43%
10 AM 21° Clear 3% 4 mph SSW 37%
11 AM 22° Clear 3% 6 mph SW 30%
12 PM 25° Clear 3% 7 mph SW 25%
1 PM 26° Clear 3% 7 mph WSW 23%
2 PM 28° Clear 3% 7 mph WSW 22%
3 PM 29° Clear 3% 7 mph WSW 22%
4 PM 29° Clear 3% 8 mph WSW 22%
15-Day Forecast
Today
7/29
Mostly Clear
28%
15°
27°
Thu
7/30
Clear
4%
15°
31°
Fri
7/31
Clear
3%
18°
32°
Sat
8/1
Clear
3%
18°
34°
Sun
8/2
Clear
3%
19°
35°
Mon
8/3
Clear
3%
19°
34°
Tue
8/4
Clear
7%
19°
34°
Wed
8/5
Mostly Clear
14%
19°
34°
Thu
8/6
Rain
66%
18°
32°
Fri
8/7
Rain
66%
17°
31°
Sat
8/8
Mostly Clear
36%
17°
30°
Sun
8/9
Drizzle
60%
18°
28°
Mon
8/10
Drizzle
60%
18°
28°
Tue
8/11
Drizzle
60%
18°
27°
Wed
8/12
Drizzle
60%
18°
27°
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
22 AQI 3.9 µg/m³
O3
Ground-level ozone
Dominant
47 AQI 52 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 47 Good 47 22
Fri 58 Moderate 58 22
Sat 61 Moderate 61 18
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
SBCAPE779 J/kg
MLCAPE297 J/kg
MUCAPE779 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-2.9
Kinematics
0–6 km Shear22 kt
0–1 km Shear14 kt
Eff. Shear21 kt
0–1 km SRH-44
0–3 km SRH-46
Eff. SRH-46
Storm Motion204° @ 23 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index—
Thermo & Levels
PWAT0.95 in
0–3 km LR7.8 °C/km
700–500 LR6.8 °C/km
Total Totals—
LCL681 hPa
LFC804 hPa
EL211 hPa
Freezing Lvl9,987 ft