Excessive Heat Watch 10:00 PM Excessive Heat Warning — Imperial County Southwest, CA, Salton Sea, CA, Chuckwalla Mountains, CA, Imperial County Southeast, CA, Imperial County West, CA, Imperial Valley, CA, Chiriaco Summit, CA, Palo Verde Valley, CA, Chuckwalla Valley, CA, Joshua Tree NP West, CA, Joshua Tree NP East, CA, Aguila Valley, AZ, Tonopah Desert, AZ, Gila Bend, AZ, Cave Creek/New River, AZ, New River Mesa, AZ, Rio Verde/Salt River, AZ, Fountain Hills/East Mesa, AZ, Superior, AZ, Northwest Pinal County, AZ, West Pinal County, AZ, Apache Junction/Gold Canyon, AZ, Sonoran Desert Natl Monument, AZ, Northwest Valley, AZ, Buckeye/Avondale, AZ, Deer Valley, AZ, Central Phoenix, AZ, North Phoenix/Glendale, AZ, Scottsdale/Paradise Valley, AZ, East Valley, AZ, South Mountain/Ahwatukee, AZ, Southeast Valley/Queen Creek, AZ 10:00 PM

Phoenix, Arizona

Last updated: 7:54 PM CDT  ·  Refresh
38°C
Feels like 40°
Clear
▲ 41°  /  ▼ 27°
Wind
5 mph SW
Humidity
30%
Dew Point
17°
Pressure
28.28 inHg
Visibility
10 mi
UV Index
4.4
Cloud Cover
2%
Sunrise
5:33 AM
Sunset
7:35 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Phoenix is currently clear at 39°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: 5:33AM · Sunset: 7:35PM.

Alerts

Excessive Heat Watch
Expires 10:00 PM
Excessive Heat Warning
Imperial County Southwest, CA, Salton Sea, CA, Chuckwalla Mountains, CA, Imperial County Southeast, CA, Imperial County West, CA, Imperial Valley, CA, Chiriaco Summit, CA, Palo Verde Valley, CA, Chuckwalla Valley, CA, Joshua Tree NP West, CA, Joshua Tree NP East, CA, Aguila Valley, AZ, Tonopah Desert, AZ, Gila Bend, AZ, Cave Creek/New River, AZ, New River Mesa, AZ, Rio Verde/Salt River, AZ, Fountain Hills/East Mesa, AZ, Superior, AZ, Northwest Pinal County, AZ, West Pinal County, AZ, Apache Junction/Gold Canyon, AZ, Sonoran Desert Natl Monument, AZ, Northwest Valley, AZ, Buckeye/Avondale, AZ, Deer Valley, AZ, Central Phoenix, AZ, North Phoenix/Glendale, AZ, Scottsdale/Paradise Valley, AZ, East Valley, AZ, South Mountain/Ahwatukee, AZ, Southeast Valley/Queen Creek, AZ
Expires 10:00 PM
77 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
38°
13%
6 PM
41°
13%
7 PM
39°
12%
8 PM
36°
3%
9 PM
36°
3%
10 PM
36°
3%
11 PM
35°
3%
12 AM
33°
3%
1 AM
32°
3%
2 AM
32°
3%
3 AM
32°
3%
4 AM
31°
3%
5 AM
31°
3%
6 AM
33°
3%
7 AM
34°
3%
8 AM
36°
3%
9 AM
37°
3%
10 AM
38°
3%
11 AM
39°
3%
12 PM
42°
3%
1 PM
42°
3%
2 PM
42°
3%
3 PM
43°
3%
4 PM
43°
3%
7-Day Forecast
Today
41° 27°
Clear.
Thu
43° 31°
Clear.
Fri
46° 32°
Clear.
Sat
47° 32°
Clear.
Sun
39° 31°
Overcast.
Mon
41° 29°
Rain, 82% chance.
Tue
41° 29°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 38° Clear 13% 5 mph SW 30%
6 PM 41° Clear 13% 6 mph NNE 31%
7 PM 39° Clear 12% 8 mph NE 33%
8 PM 36° Clear 3% 7 mph NE 34%
9 PM 36° Clear 3% 6 mph NNE 34%
10 PM 36° Clear 3% 5 mph NE 35%
11 PM 35° Clear 3% 5 mph NE 36%
12 AM 33° Clear 3% 5 mph NE 38%
1 AM 32° Clear 3% 5 mph NE 40%
2 AM 32° Clear 3% 5 mph NE 42%
3 AM 32° Clear 3% 5 mph ENE 44%
4 AM 31° Clear 3% 5 mph ENE 45%
5 AM 31° Clear 3% 5 mph ENE 43%
6 AM 33° Clear 3% 4 mph ENE 40%
7 AM 34° Clear 3% 5 mph ENE 36%
8 AM 36° Clear 3% 4 mph E 33%
9 AM 37° Clear 3% 4 mph ESE 30%
10 AM 38° Clear 3% 4 mph SE 28%
11 AM 39° Clear 3% 3 mph SE 26%
12 PM 42° Clear 3% 3 mph SSE 24%
1 PM 42° Clear 3% 4 mph SSE 23%
2 PM 42° Clear 3% 4 mph S 22%
3 PM 43° Clear 3% 4 mph S 22%
4 PM 43° Clear 3% 4 mph SSW 21%
15-Day Forecast
Today
7/22
Clear
13%
27°
41°
Thu
7/23
Clear
3%
31°
43°
Fri
7/24
Clear
3%
32°
46°
Sat
7/25
Clear
15%
32°
47°
Sun
7/26
Overcast
16%
31°
39°
Mon
7/27
Rain
82%
29°
41°
Tue
7/28
Rain
63%
29°
41°
Wed
7/29
Rain
63%
29°
41°
Thu
7/30
Rain
68%
27°
41°
Fri
7/31
Rain
50%
27°
41°
Sat
8/1
Drizzle
60%
28°
41°
Sun
8/2
Clear
25%
31°
41°
Mon
8/3
Drizzle
60%
31°
41°
Tue
8/4
Drizzle
60%
31°
40°
Wed
8/5
Drizzle
60%
31°
39°
77
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
24 AQI 4.5 µg/m³
O3
Ground-level ozone
Dominant
77 AQI 63 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 77 Moderate 77 24
Fri 101 Unhealthy for Sensitive Groups 101 33
Sat 101 Unhealthy for Sensitive Groups 101 39
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, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1035 J/kg
MLCAPE587 J/kg
MUCAPE1035 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-1.9
Kinematics
0–6 km Shear2 kt
0–1 km Shear2 kt
Eff. Shear3 kt
0–1 km SRH-10
0–3 km SRH19
Eff. SRH19
Storm Motion55° @ 19 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado-0.0
STP (eff)0.0
Supercell0.0
K-Index40.9
Thermo & Levels
PWAT1.88 in
0–3 km LR9.3 °C/km
700–500 LR5.7 °C/km
Total Totals47.3
LCL704 hPa
LFC958 hPa
EL164 hPa
Freezing Lvl16,234 ft