Extreme 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

Salt Lake City, Utah

Last updated: 6:24 PM CDT  ·  Refresh
32°C
Feels like 31°
Overcast
▲ 32°  /  ▼ 19°
Wind
11 mph S
Humidity
32%
Dew Point
10°
Pressure
25.30 inHg
Visibility
10 mi
UV Index
3.6
Cloud Cover
86%
Sunrise
6:20 AM
Sunset
8:46 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Salt Lake City is currently overcast at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 609 J/kg) — isolated convective development possible. Sunrise: 6:20AM · Sunset: 8:46PM.

Alerts

Extreme 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
61 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
32°
36%
6 PM
32°
48%
7 PM
28°
48%
8 PM
27°
45%
9 PM
26°
30%
10 PM
24°
27%
11 PM
24°
8%
12 AM
23°
7%
1 AM
23°
9%
2 AM
23°
12%
3 AM
23°
9%
4 AM
22°
28%
5 AM
22°
14%
6 AM
20°
4%
7 AM
22°
4%
8 AM
23°
4%
9 AM
26°
4%
10 AM
27°
4%
11 AM
29°
3%
12 PM
31°
3%
1 PM
31°
3%
2 PM
33°
3%
3 PM
33°
3%
4 PM
33°
3%
7-Day Forecast
Today
32° 19°
Rain, 45% chance.
Thu
34° 19°
Clear.
Fri
36° 19°
Clear.
Sat
37° 20°
Mostly Clear.
Sun
36° 20°
Clear.
Mon
34° 18°
Clear.
Tue
31° 17°
Mostly Clear.
TimeTempConditionsPrecipWindHumidity
Now 32° Overcast 36% 11 mph S 32%
6 PM 32° Overcast 48% 11 mph SSW 34%
7 PM 28° Overcast 48% 10 mph SSW 40%
8 PM 27° Rain 45% 7 mph SSE 43%
9 PM 26° Partly Cloudy 30% 6 mph SSE 45%
10 PM 24° Partly Cloudy 27% 7 mph SE 46%
11 PM 24° Partly Cloudy 8% 6 mph SE 47%
12 AM 23° Mostly Clear 7% 6 mph SE 47%
1 AM 23° Mostly Clear 9% 7 mph SE 47%
2 AM 23° Mostly Clear 12% 7 mph SE 47%
3 AM 23° Mostly Clear 9% 7 mph SE 47%
4 AM 22° Mostly Clear 28% 7 mph SE 48%
5 AM 22° Clear 14% 7 mph SE 48%
6 AM 20° Clear 4% 7 mph SE 46%
7 AM 22° Clear 4% 7 mph SE 42%
8 AM 23° Clear 4% 7 mph SSE 38%
9 AM 26° Clear 4% 7 mph S 34%
10 AM 27° Clear 4% 7 mph S 29%
11 AM 29° Mostly Clear 3% 7 mph SSW 25%
12 PM 31° Mostly Clear 3% 7 mph SW 22%
1 PM 31° Clear 3% 7 mph WSW 19%
2 PM 33° Clear 3% 8 mph W 17%
3 PM 33° Clear 3% 8 mph WNW 16%
4 PM 33° Clear 3% 7 mph WNW 16%
15-Day Forecast
Today
7/29
Rain
45%
19°
32°
Thu
7/30
Clear
14%
19°
34°
Fri
7/31
Clear
3%
19°
36°
Sat
8/1
Mostly Clear
3%
20°
37°
Sun
8/2
Clear
3%
20°
36°
Mon
8/3
Clear
3%
18°
34°
Tue
8/4
Mostly Clear
3%
17°
31°
Wed
8/5
Clear
3%
17°
33°
Thu
8/6
Clear
15%
19°
34°
Fri
8/7
Clear
15%
19°
35°
Sat
8/8
Clear
11%
19°
34°
Sun
8/9
Clear
25%
19°
33°
Mon
8/10
Clear
25%
19°
33°
Tue
8/11
Drizzle
60%
19°
32°
Wed
8/12
Clear
25%
19°
32°
61
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
55 AQI 11.2 µg/m³
O3
Ground-level ozone
Dominant
61 AQI 58 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 61 Moderate 61 55
Fri 87 Moderate 87 57
Sat 100 Moderate 100 57
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 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE553 J/kg
MLCAPE470 J/kg
MUCAPE553 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-3.5
Kinematics
0–6 km Shear23 kt
0–1 km Shear1 kt
Eff. Shear17 kt
0–1 km SRH-0
0–3 km SRH-40
Eff. SRH-40
Storm Motion204° @ 19 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado-0.0
STP (eff)0.0
Supercell0.0
K-Index37.2
Thermo & Levels
PWAT1.17 in
0–3 km LR8.9 °C/km
700–500 LR8.4 °C/km
Total Totals55.2
LCL624 hPa
LFC857 hPa
EL288 hPa
Freezing Lvl11,765 ft