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: 6:09 PM CDT  ·  Refresh
39°C
Feels like 40°
Clear
▲ 42°  /  ▼ 28°
Wind
4 mph NNE
Humidity
25%
Dew Point
16°
Pressure
28.49 inHg
Visibility
10 mi
UV Index
7.3
Cloud Cover
3%
Sunrise
5:33 AM
Sunset
7:34 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 770 J/kg) — isolated convective development possible. Sunrise: 5:33AM · Sunset: 7:34PM.

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
115 AQI · Unhealthy for Sensitive Groups Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
39°
7%
5 PM
42°
15%
6 PM
42°
15%
7 PM
41°
15%
8 PM
39°
15%
9 PM
37°
15%
10 PM
36°
15%
11 PM
35°
3%
12 AM
34°
3%
1 AM
33°
3%
2 AM
33°
3%
3 AM
32°
3%
4 AM
32°
3%
5 AM
30°
3%
6 AM
31°
3%
7 AM
32°
3%
8 AM
33°
3%
9 AM
34°
3%
10 AM
36°
3%
11 AM
38°
3%
12 PM
38°
3%
1 PM
40°
3%
2 PM
41°
3%
3 PM
43°
3%
7-Day Forecast
Today
42° 28°
Clear.
Thu
44° 30°
Clear.
Fri
47° 32°
Clear.
Sat
46° 31°
Clear with a 52% chance of rain.
Sun
41° 31°
Drizzle, 64% chance.
Mon
41° 27°
Rain, 78% chance.
Tue
40° 27°
Overcast with a 78% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 39° Clear 7% 4 mph NNE 25%
5 PM 42° Clear 15% 4 mph N 23%
6 PM 42° Clear 15% 4 mph N 25%
7 PM 41° Clear 15% 4 mph NNE 26%
8 PM 39° Clear 15% 4 mph NE 28%
9 PM 37° Clear 15% 3 mph NE 30%
10 PM 36° Clear 15% 3 mph ENE 31%
11 PM 35° Clear 3% 4 mph E 33%
12 AM 34° Clear 3% 4 mph ENE 34%
1 AM 33° Clear 3% 3 mph NE 36%
2 AM 33° Clear 3% 4 mph NE 38%
3 AM 32° Clear 3% 4 mph ENE 40%
4 AM 32° Clear 3% 4 mph ENE 42%
5 AM 30° Clear 3% 4 mph E 43%
6 AM 31° Clear 3% 4 mph ESE 42%
7 AM 32° Clear 3% 4 mph ESE 41%
8 AM 33° Clear 3% 5 mph ESE 38%
9 AM 34° Clear 3% 4 mph ESE 34%
10 AM 36° Clear 3% 4 mph ESE 30%
11 AM 38° Clear 3% 4 mph E 28%
12 PM 38° Clear 3% 4 mph E 27%
1 PM 40° Clear 3% 3 mph E 26%
2 PM 41° Clear 3% 3 mph ESE 24%
3 PM 43° Clear 3% 2 mph SE 24%
15-Day Forecast
Today
7/22
Clear
15%
28°
42°
Thu
7/23
Clear
3%
30°
44°
Fri
7/24
Clear
7%
32°
47°
Sat
7/25
Clear
52%
31°
46°
Sun
7/26
Drizzle
64%
31°
41°
Mon
7/27
Rain
78%
27°
41°
Tue
7/28
Overcast
78%
27°
40°
Wed
7/29
Drizzle
66%
27°
42°
Thu
7/30
Drizzle
50%
29°
41°
Fri
7/31
Partly Cloudy
36%
31°
42°
Sat
8/1
Drizzle
60%
29°
42°
Sun
8/2
Clear
25%
32°
41°
Mon
8/3
Drizzle
60%
32°
41°
Tue
8/4
Drizzle
60%
32°
41°
Wed
8/5
Drizzle
60%
32°
40°
115
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
35 AQI 6.4 µg/m³
O3
Ground-level ozone
Dominant
115 AQI 75 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 115 Unhealthy for Sensitive Groups 115 35
Fri 50 Good 50 44
Sat 84 Moderate 84 44
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
SBCAPE490 J/kg
MLCAPE29 J/kg
MUCAPE490 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-1.0
Kinematics
0–6 km Shear4 kt
0–1 km Shear1 kt
Eff. Shear4 kt
0–1 km SRH1
0–3 km SRH12
Eff. SRH12
Storm Motion61° @ 18 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index32.4
Thermo & Levels
PWAT1.63 in
0–3 km LR9.4 °C/km
700–500 LR5.7 °C/km
Total Totals45.1
LCL685 hPa
LFC965 hPa
EL208 hPa
Freezing Lvl16,270 ft