Extreme Heat Warning — Lake Havasu and Fort Mohave, AZ, Lake Mead - AZ side, AZ, Lake Mohave - AZ side, 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, 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 Excessive Heat Watch 10:00 PM

Las Vegas, Nevada

Last updated: 1:36 AM CDT  ·  Refresh
34°C
Feels like 33°
Partly Cloudy
▲ 36°  /  ▼ 29°
Wind
6 mph ENE
Humidity
30%
Dew Point
14°
Pressure
27.84 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
33%
Sunrise
5:38 AM
Sunset
7:54 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Las Vegas is currently partly cloudy at 34°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:38AM · Sunset: 7:54PM.

Alerts

Extreme Heat Warning
Lake Havasu and Fort Mohave, AZ, Lake Mead - AZ side, AZ, Lake Mohave - AZ side, 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, 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
Excessive Heat Watch
Expires 10:00 PM
54 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
34°
5%
12 AM
33°
5%
1 AM
32°
3%
2 AM
32°
3%
3 AM
31°
3%
4 AM
32°
3%
5 AM
29°
3%
6 AM
29°
3%
7 AM
30°
3%
8 AM
32°
3%
9 AM
32°
3%
10 AM
34°
3%
11 AM
36°
3%
12 PM
37°
3%
1 PM
38°
3%
2 PM
39°
3%
3 PM
39°
3%
4 PM
40°
3%
5 PM
41°
3%
6 PM
41°
3%
7 PM
40°
3%
8 PM
40°
3%
9 PM
39°
3%
10 PM
38°
3%
7-Day Forecast
Tonight
36° 29°
Partly Cloudy.
Wed
41° 29°
Clear.
Thu
42° 31°
Clear.
Fri
44° 32°
Clear.
Sat
46° 32°
Clear.
Sun
44° 32°
Clear.
Mon
43° 31°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 34° Partly Cloudy 5% 6 mph ENE 30%
12 AM 33° Mostly Cloudy 5% 5 mph NE 30%
1 AM 32° Mostly Cloudy 3% 5 mph NE 32%
2 AM 32° Partly Cloudy 3% 4 mph NE 34%
3 AM 31° Mostly Clear 3% 4 mph ENE 34%
4 AM 32° Mostly Clear 3% 4 mph E 35%
5 AM 29° Mostly Clear 3% 3 mph ESE 36%
6 AM 29° Clear 3% 4 mph SE 35%
7 AM 30° Clear 3% 5 mph SE 34%
8 AM 32° Clear 3% 5 mph SE 31%
9 AM 32° Clear 3% 5 mph SE 27%
10 AM 34° Clear 3% 5 mph SSE 24%
11 AM 36° Clear 3% 5 mph SE 22%
12 PM 37° Clear 3% 5 mph SE 20%
1 PM 38° Clear 3% 5 mph SE 18%
2 PM 39° Clear 3% 6 mph SE 17%
3 PM 39° Clear 3% 6 mph SSE 16%
4 PM 40° Clear 3% 7 mph SSE 16%
5 PM 41° Clear 3% 7 mph S 16%
6 PM 41° Clear 3% 7 mph S 16%
7 PM 40° Clear 3% 8 mph SSW 17%
8 PM 40° Clear 3% 8 mph SSW 18%
9 PM 39° Clear 3% 7 mph SSW 18%
10 PM 38° Mostly Clear 3% 6 mph SSW 19%
15-Day Forecast
Today
7/21
Partly Cloudy
5%
29°
36°
Wed
7/22
Clear
3%
29°
41°
Thu
7/23
Clear
7%
31°
42°
Fri
7/24
Clear
14%
32°
44°
Sat
7/25
Clear
3%
32°
46°
Sun
7/26
Clear
8%
32°
44°
Mon
7/27
Clear
8%
31°
43°
Tue
7/28
Clear
18%
31°
41°
Wed
7/29
Clear
18%
31°
42°
Thu
7/30
Clear
19%
31°
43°
Fri
7/31
Clear
19%
32°
42°
Sat
8/1
Clear
25%
32°
43°
Sun
8/2
Clear
25%
31°
41°
Mon
8/3
Clear
25%
31°
40°
Tue
8/4
Clear
3%
30°
39°
54
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
31 AQI 5.7 µg/m³
O3
Ground-level ozone
Dominant
54 AQI 56 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 54 Moderate 54 31
Thu 77 Moderate 77 32
Fri 46 Good 46 26
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 22, 05:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1 J/kg
MLCAPE8 J/kg
MUCAPE5 J/kg
SBCIN-410 J/kg
MLCIN0 J/kg
Lifted Index-0.1
Kinematics
0–6 km Shear5 kt
0–1 km Shear12 kt
Eff. Shear—
0–1 km SRH-28
0–3 km SRH17
Eff. SRH—
Storm Motion121° @ 13 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado-0.0
STP (eff)—
Supercell—
K-Index34.3
Thermo & Levels
PWAT1.53 in
0–3 km LR7.8 °C/km
700–500 LR6.9 °C/km
Total Totals47.7
LCL704 hPa
LFC529 hPa
EL494 hPa
Freezing Lvl14,731 ft