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: 6:04 PM CDT  ·  Refresh
39°C
Feels like 40°
Clear
▲ 43°  /  ▼ 27°
Wind
3 mph NW
Humidity
25%
Dew Point
16°
Pressure
28.50 inHg
Visibility
10 mi
UV Index
7.4
Cloud Cover
6%
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 875 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
97 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
39°
7%
5 PM
43°
7%
6 PM
42°
7%
7 PM
41°
4%
8 PM
39°
4%
9 PM
37°
4%
10 PM
36°
4%
11 PM
36°
4%
12 AM
36°
4%
1 AM
33°
4%
2 AM
33°
4%
3 AM
32°
3%
4 AM
32°
3%
5 AM
31°
3%
6 AM
32°
3%
7 AM
33°
3%
8 AM
34°
3%
9 AM
35°
3%
10 AM
36°
3%
11 AM
38°
3%
12 PM
39°
3%
1 PM
40°
3%
2 PM
41°
3%
3 PM
43°
3%
7-Day Forecast
Today
43° 27°
Clear.
Thu
44° 31°
Clear.
Fri
47° 32°
Clear.
Sat
46° 32°
Clear.
Sun
41° 32°
Mostly Cloudy with a 29% chance of rain.
Mon
41° 29°
Rain, 78% chance.
Tue
39° 28°
Overcast with a 60% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 39° Clear 7% 3 mph NW 25%
5 PM 43° Clear 7% 4 mph N 23%
6 PM 42° Clear 7% 5 mph NNE 26%
7 PM 41° Clear 4% 6 mph NNE 29%
8 PM 39° Clear 4% 8 mph NE 31%
9 PM 37° Clear 4% 6 mph NE 31%
10 PM 36° Clear 4% 5 mph ENE 32%
11 PM 36° Clear 4% 4 mph ENE 32%
12 AM 36° Clear 4% 3 mph ENE 34%
1 AM 33° Clear 4% 3 mph NE 35%
2 AM 33° Clear 4% 3 mph NE 37%
3 AM 32° Clear 3% 4 mph ENE 40%
4 AM 32° Clear 3% 4 mph ENE 42%
5 AM 31° Clear 3% 4 mph E 43%
6 AM 32° Clear 3% 4 mph ENE 43%
7 AM 33° Clear 3% 3 mph ENE 42%
8 AM 34° Clear 3% 4 mph E 38%
9 AM 35° Clear 3% 4 mph E 34%
10 AM 36° Clear 3% 3 mph E 31%
11 AM 38° Clear 3% 3 mph E 29%
12 PM 39° Clear 3% 2 mph ESE 28%
1 PM 40° Clear 3% 2 mph ESE 26%
2 PM 41° Clear 3% 2 mph SE 25%
3 PM 43° Clear 3% 2 mph SSE 24%
15-Day Forecast
Today
7/22
Clear
7%
27°
43°
Thu
7/23
Clear
4%
31°
44°
Fri
7/24
Clear
3%
32°
47°
Sat
7/25
Clear
17%
32°
46°
Sun
7/26
Mostly Cloudy
29%
32°
41°
Mon
7/27
Rain
78%
29°
41°
Tue
7/28
Overcast
60%
28°
39°
Wed
7/29
Drizzle
63%
29°
41°
Thu
7/30
Drizzle
50%
29°
41°
Fri
7/31
Partly Cloudy
36%
31°
42°
Sat
8/1
Drizzle
60%
30°
43°
Sun
8/2
Clear
25%
33°
42°
Mon
8/3
Drizzle
60%
32°
42°
Tue
8/4
Drizzle
60%
32°
41°
Wed
8/5
Drizzle
60%
32°
41°
97
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
29 AQI 5.4 µg/m³
O3
Ground-level ozone
Dominant
97 AQI 70 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 97 Moderate 97 29
Fri 80 Moderate 80 33
Sat 97 Moderate 97 41
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, 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
SBCAPE653 J/kg
MLCAPE28 J/kg
MUCAPE653 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-1.5
Kinematics
0–6 km Shear5 kt
0–1 km Shear4 kt
Eff. Shear4 kt
0–1 km SRH-18
0–3 km SRH-11
Eff. SRH-11
Storm Motion27° @ 20 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado-0.0
STP (eff)0.0
Supercell0.0
K-Index35.1
Thermo & Levels
PWAT1.67 in
0–3 km LR9.5 °C/km
700–500 LR5.6 °C/km
Total Totals45.2
LCL690 hPa
LFC965 hPa
EL191 hPa
Freezing Lvl16,286 ft