Excessive Heat Warning — Northwest Plateau, AZ, Lake Havasu and Fort Mohave, AZ, Lake Mead - AZ side, AZ, Lake Mohave - AZ side, AZ, Hualapai Mountains, AZ, Northwest Deserts, AZ, Death Valley National Park, CA, Western Mojave Desert, CA, Eastern Mojave Desert, Including the Mojave National Preserve, CA, Morongo Basin, CA, Cadiz Basin, CA, San Bernardino County-Upper Colorado River Valley, CA, Owens Valley South, CA, Owens Valley North, CA, Esmeralda and Central Nye County, NV, Lincoln County, NV, Northeast Clark County, NV, Western Clark and Southern Nye County, NV, Las Vegas Valley, NV, Southern Clark County, NV, Lake Mead - NV side, NV, Lake Mohave - NV side, NV 10:00 PM

Las Vegas Valley, Clark County, Nevada, United States

Last updated: 5:22 PM CDT  ·  Refresh
41°C
Feels like 39°
Clear
▲ 42°  /  ▼ 27°
Wind
10 mph SSW
Humidity
12%
Dew Point
5°
Pressure
27.46 inHg
Visibility
10 mi
UV Index
8.3
Cloud Cover
1%
Sunrise
5:44 AM
Sunset
7:48 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Las Vegas Valley is currently clear at 41°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:44AM · Sunset: 7:48PM.

Alerts

Excessive Heat Warning
Northwest Plateau, AZ, Lake Havasu and Fort Mohave, AZ, Lake Mead - AZ side, AZ, Lake Mohave - AZ side, AZ, Hualapai Mountains, AZ, Northwest Deserts, AZ, Death Valley National Park, CA, Western Mojave Desert, CA, Eastern Mojave Desert, Including the Mojave National Preserve, CA, Morongo Basin, CA, Cadiz Basin, CA, San Bernardino County-Upper Colorado River Valley, CA, Owens Valley South, CA, Owens Valley North, CA, Esmeralda and Central Nye County, NV, Lincoln County, NV, Northeast Clark County, NV, Western Clark and Southern Nye County, NV, Las Vegas Valley, NV, Southern Clark County, NV, Lake Mead - NV side, NV, Lake Mohave - NV side, NV
Expires 10:00 PM
71 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
41°
3%
4 PM
40°
3%
5 PM
42°
3%
6 PM
41°
3%
7 PM
39°
3%
8 PM
38°
3%
9 PM
37°
3%
10 PM
35°
3%
11 PM
34°
3%
12 AM
33°
3%
1 AM
32°
3%
2 AM
32°
3%
3 AM
31°
3%
4 AM
30°
3%
5 AM
28°
3%
6 AM
29°
3%
7 AM
30°
3%
8 AM
32°
3%
9 AM
31°
3%
10 AM
35°
3%
11 AM
36°
3%
12 PM
37°
3%
1 PM
38°
3%
2 PM
38°
3%
7-Day Forecast
Today
42° 27°
Clear.
Thu
42° 27°
Clear.
Fri
43° 28°
Clear.
Sat
45° 29°
Clear.
Sun
45° 32°
Clear.
Mon
44° 31°
Clear.
Tue
44° 30°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 41° Clear 3% 10 mph SSW 12%
4 PM 40° Clear 3% 9 mph SW 10%
5 PM 42° Clear 3% 8 mph SW 10%
6 PM 41° Clear 3% 8 mph SW 11%
7 PM 39° Clear 3% 9 mph WSW 11%
8 PM 38° Clear 3% 9 mph WSW 13%
9 PM 37° Clear 3% 8 mph W 16%
10 PM 35° Clear 3% 7 mph W 18%
11 PM 34° Clear 3% 7 mph W 19%
12 AM 33° Clear 3% 7 mph W 19%
1 AM 32° Clear 3% 7 mph W 18%
2 AM 32° Clear 3% 6 mph WSW 16%
3 AM 31° Clear 3% 4 mph WSW 15%
4 AM 30° Clear 3% 3 mph WSW 15%
5 AM 28° Clear 3% 3 mph W 16%
6 AM 29° Clear 3% 2 mph W 16%
7 AM 30° Clear 3% 2 mph NW 16%
8 AM 32° Clear 3% 2 mph ENE 16%
9 AM 31° Clear 3% 3 mph ESE 15%
10 AM 35° Clear 3% 4 mph SE 13%
11 AM 36° Clear 3% 4 mph SE 12%
12 PM 37° Clear 3% 5 mph SE 11%
1 PM 38° Clear 3% 5 mph SE 10%
2 PM 38° Clear 3% 5 mph SSE 9%
15-Day Forecast
Today
7/29
Clear
3%
27°
42°
Thu
7/30
Clear
3%
27°
42°
Fri
7/31
Clear
3%
28°
43°
Sat
8/1
Clear
3%
29°
45°
Sun
8/2
Clear
3%
32°
45°
Mon
8/3
Clear
3%
31°
44°
Tue
8/4
Clear
3%
30°
44°
Wed
8/5
Mostly Clear
18%
30°
44°
Thu
8/6
Partly Cloudy
34%
29°
41°
Fri
8/7
Mostly Cloudy
45%
29°
39°
Sat
8/8
Drizzle
60%
28°
38°
Sun
8/9
Clear
25%
28°
37°
Mon
8/10
Clear
25%
28°
37°
Tue
8/11
Clear
25%
28°
37°
Wed
8/12
Clear
25%
28°
37°
71
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
28 AQI 5.1 µg/m³
O3
Ground-level ozone
Dominant
71 AQI 62 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 71 Moderate 71 28
Fri 71 Moderate 71 20
Sat 67 Moderate 67 21
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 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE231 J/kg
MLCAPE39 J/kg
MUCAPE231 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index1.6
Kinematics
0–6 km Shear17 kt
0–1 km Shear4 kt
Eff. Shear4 kt
0–1 km SRH11
0–3 km SRH-1
Eff. SRH-1
Storm Motion197° @ 24 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index26.1
Thermo & Levels
PWAT0.79 in
0–3 km LR10.4 °C/km
700–500 LR7.2 °C/km
Total Totals45.4
LCL554 hPa
LFC930 hPa
EL601 hPa
Freezing Lvl14,698 ft