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
39°C
Feels like 41°
Clear
▲ 43°  /  ▼ 29°
Wind
3 mph NNW
Humidity
28%
Dew Point
17°
Pressure
28.57 inHg
Visibility
10 mi
UV Index
4.4
Cloud Cover
0%
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 664 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
112 AQI · Unhealthy for Sensitive Groups Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
39°
8%
6 PM
43°
8%
7 PM
42°
3%
8 PM
40°
3%
9 PM
39°
3%
10 PM
39°
3%
11 PM
38°
3%
12 AM
37°
3%
1 AM
37°
3%
2 AM
36°
3%
3 AM
36°
3%
4 AM
33°
3%
5 AM
34°
3%
6 AM
35°
3%
7 AM
37°
3%
8 AM
38°
3%
9 AM
39°
3%
10 AM
41°
3%
11 AM
41°
3%
12 PM
43°
3%
1 PM
44°
3%
2 PM
44°
3%
3 PM
44°
3%
4 PM
45°
3%
7-Day Forecast
Today
43° 29°
Clear.
Thu
46° 33°
Clear.
Fri
48° 36°
Clear.
Sat
49° 34°
Clear.
Sun
41° 33°
Overcast with a 29% chance of rain.
Mon
43° 31°
Heavy Rain, 82% chance.
Tue
43° 31°
Rain, 82% chance.
TimeTempConditionsPrecipWindHumidity
Now 39° Clear 8% 3 mph NNW 28%
6 PM 43° Clear 8% 4 mph NNE 29%
7 PM 42° Clear 3% 6 mph NNE 31%
8 PM 40° Clear 3% 5 mph NE 32%
9 PM 39° Clear 3% 3 mph E 33%
10 PM 39° Clear 3% 3 mph ESE 34%
11 PM 38° Clear 3% 3 mph ESE 35%
12 AM 37° Clear 3% 3 mph E 36%
1 AM 37° Clear 3% 3 mph E 38%
2 AM 36° Clear 3% 4 mph E 40%
3 AM 36° Clear 3% 4 mph E 41%
4 AM 33° Clear 3% 5 mph E 44%
5 AM 34° Clear 3% 5 mph E 44%
6 AM 35° Clear 3% 5 mph E 42%
7 AM 37° Clear 3% 5 mph ESE 39%
8 AM 38° Clear 3% 5 mph ESE 34%
9 AM 39° Clear 3% 5 mph ESE 30%
10 AM 41° Clear 3% 5 mph E 27%
11 AM 41° Clear 3% 4 mph ESE 25%
12 PM 43° Clear 3% 4 mph ESE 24%
1 PM 44° Clear 3% 3 mph ESE 22%
2 PM 44° Clear 3% 3 mph SE 21%
3 PM 44° Clear 3% 3 mph SE 21%
4 PM 45° Clear 3% 3 mph SSE 20%
15-Day Forecast
Today
7/22
Clear
8%
29°
43°
Thu
7/23
Clear
3%
33°
46°
Fri
7/24
Clear
3%
36°
48°
Sat
7/25
Clear
15%
34°
49°
Sun
7/26
Overcast
29%
33°
41°
Mon
7/27
Heavy Rain
82%
31°
43°
Tue
7/28
Rain
82%
31°
43°
Wed
7/29
Rain
63%
32°
43°
Thu
7/30
Rain
68%
31°
43°
Fri
7/31
Drizzle
36%
28°
42°
Sat
8/1
Drizzle
60%
30°
42°
Sun
8/2
Clear
25%
33°
42°
Mon
8/3
Drizzle
60%
33°
42°
Tue
8/4
Drizzle
60%
32°
42°
Wed
8/5
Drizzle
60%
32°
41°
112
Unhealthy for Sensitive Groups
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Members of sensitive groups may experience health effects; the general public is less likely to be affected.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
34 AQI 6.2 µg/m³
O3
Ground-level ozone
Dominant
112 AQI 74 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 112 Unhealthy for Sensitive Groups 112 34
Fri 58 Moderate 58 39
Sat 71 Moderate 71 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, 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
SBCAPE917 J/kg
MLCAPE426 J/kg
MUCAPE917 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-1.8
Kinematics
0–6 km Shear5 kt
0–1 km Shear2 kt
Eff. Shear4 kt
0–1 km SRH-10
0–3 km SRH28
Eff. SRH28
Storm Motion76° @ 18 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado-0.0
STP (eff)0.0
Supercell0.1
K-Index38.5
Thermo & Levels
PWAT1.87 in
0–3 km LR9.2 °C/km
700–500 LR5.7 °C/km
Total Totals46.8
LCL703 hPa
LFC967 hPa
EL168 hPa
Freezing Lvl16,614 ft