Excessive Heat Watch 10:00 PM 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: 5:20 PM CDT  ·  Refresh
32°C
Feels like 31°
Partly Cloudy
▲ 33°  /  ▼ 19°
Wind
10 mph SSW
Humidity
28%
Dew Point
10°
Pressure
25.34 inHg
Visibility
9 mi
UV Index
7.2
Cloud Cover
51%
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 partly cloudy at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 573 J/kg) — isolated convective development possible. Sunrise: 6:20AM · Sunset: 8:46PM.

Alerts

Excessive Heat Watch
Expires 10:00 PM
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°
24%
5 PM
32°
26%
6 PM
33°
27%
7 PM
32°
39%
8 PM
29°
19%
9 PM
27°
16%
10 PM
26°
14%
11 PM
26°
9%
12 AM
25°
8%
1 AM
24°
9%
2 AM
24°
10%
3 AM
24°
6%
4 AM
23°
7%
5 AM
23°
17%
6 AM
21°
4%
7 AM
22°
4%
8 AM
24°
4%
9 AM
26°
5%
10 AM
27°
5%
11 AM
29°
3%
12 PM
30°
3%
1 PM
31°
3%
2 PM
33°
3%
3 PM
33°
3%
7-Day Forecast
Today
33° 19°
Mostly Cloudy with a 39% chance of rain.
Thu
34° 19°
Clear.
Fri
36° 18°
Clear.
Sat
36° 19°
Clear.
Sun
36° 19°
Clear.
Mon
34° 19°
Clear.
Tue
33° 18°
Partly Cloudy.
TimeTempConditionsPrecipWindHumidity
Now 32° Partly Cloudy 24% 10 mph SSW 28%
5 PM 32° Overcast 26% 11 mph S 26%
6 PM 33° Overcast 27% 11 mph S 30%
7 PM 32° Overcast 39% 8 mph S 35%
8 PM 29° Overcast 19% 6 mph S 39%
9 PM 27° Mostly Cloudy 16% 8 mph SSE 42%
10 PM 26° Mostly Cloudy 14% 8 mph SE 44%
11 PM 26° Partly Cloudy 9% 8 mph SE 45%
12 AM 25° Mostly Clear 8% 7 mph SE 46%
1 AM 24° Mostly Clear 9% 6 mph SE 46%
2 AM 24° Mostly Clear 10% 6 mph SE 46%
3 AM 24° Mostly Clear 6% 7 mph SE 46%
4 AM 23° Clear 7% 7 mph SE 46%
5 AM 23° Clear 17% 8 mph ESE 46%
6 AM 21° Clear 4% 8 mph SE 45%
7 AM 22° Clear 4% 7 mph SE 42%
8 AM 24° Clear 4% 7 mph SSE 37%
9 AM 26° Clear 5% 8 mph S 33%
10 AM 27° Clear 5% 8 mph S 29%
11 AM 29° Mostly Clear 3% 8 mph SSW 26%
12 PM 30° Mostly Clear 3% 8 mph SSW 23%
1 PM 31° Mostly Clear 3% 7 mph SW 21%
2 PM 33° Clear 3% 8 mph SW 19%
3 PM 33° Clear 3% 8 mph WSW 17%
15-Day Forecast
Today
7/29
Mostly Cloudy
39%
19°
33°
Thu
7/30
Clear
9%
19°
34°
Fri
7/31
Clear
3%
18°
36°
Sat
8/1
Clear
3%
19°
36°
Sun
8/2
Clear
3%
19°
36°
Mon
8/3
Clear
3%
19°
34°
Tue
8/4
Partly Cloudy
3%
18°
33°
Wed
8/5
Clear
3%
17°
34°
Thu
8/6
Clear
18%
19°
36°
Fri
8/7
Clear
19%
19°
34°
Sat
8/8
Clear
12%
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, 21:00'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
SBCAPE663 J/kg
MLCAPE474 J/kg
MUCAPE663 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-3.9
Kinematics
0–6 km Shear24 kt
0–1 km Shear3 kt
Eff. Shear15 kt
0–1 km SRH7
0–3 km SRH-26
Eff. SRH-26
Storm Motion197° @ 19 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index38.4
Thermo & Levels
PWAT1.13 in
0–3 km LR9.4 °C/km
700–500 LR8.2 °C/km
Total Totals55.7
LCL615 hPa
LFC858 hPa
EL265 hPa
Freezing Lvl11,726 ft