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: 7:08 PM CDT  ·  Refresh
39°C
Feels like 40°
Clear
▲ 41°  /  ▼ 24°
Wind
5 mph E
Humidity
28%
Dew Point
17°
Pressure
28.23 inHg
Visibility
10 mi
UV Index
5.8
Cloud Cover
7%
Sunrise
5:32 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 672 J/kg) — isolated convective development possible. Sunrise: 5:32AM · 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
87 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
39°
8%
6 PM
41°
8%
7 PM
41°
8%
8 PM
39°
6%
9 PM
36°
6%
10 PM
36°
6%
11 PM
35°
6%
12 AM
34°
6%
1 AM
33°
6%
2 AM
32°
12%
3 AM
32°
12%
4 AM
32°
12%
5 AM
31°
11%
6 AM
31°
11%
7 AM
33°
11%
8 AM
34°
3%
9 AM
36°
3%
10 AM
37°
3%
11 AM
38°
3%
12 PM
40°
3%
1 PM
41°
3%
2 PM
42°
3%
3 PM
42°
3%
4 PM
43°
3%
7-Day Forecast
Today
41° 24°
Clear.
Thu
43° 31°
Clear.
Fri
47° 32°
Clear.
Sat
46° 32°
Clear with a 39% chance of rain.
Sun
40° 32°
Drizzle, 52% chance.
Mon
41° 29°
Heavy Rain, 80% chance.
Tue
40° 29°
Mostly Cloudy with a 53% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 39° Clear 8% 5 mph E 28%
6 PM 41° Clear 8% 5 mph NE 29%
7 PM 41° Clear 8% 6 mph NE 30%
8 PM 39° Clear 6% 6 mph NE 32%
9 PM 36° Clear 6% 5 mph ENE 32%
10 PM 36° Clear 6% 5 mph ENE 33%
11 PM 35° Clear 6% 4 mph ENE 35%
12 AM 34° Clear 6% 4 mph ENE 37%
1 AM 33° Clear 6% 4 mph ENE 38%
2 AM 32° Clear 12% 4 mph NE 40%
3 AM 32° Clear 12% 4 mph NE 42%
4 AM 32° Clear 12% 4 mph ENE 43%
5 AM 31° Clear 11% 4 mph ENE 44%
6 AM 31° Clear 11% 4 mph ENE 42%
7 AM 33° Clear 11% 4 mph ENE 40%
8 AM 34° Clear 3% 4 mph E 37%
9 AM 36° Clear 3% 4 mph ESE 33%
10 AM 37° Clear 3% 3 mph ESE 30%
11 AM 38° Clear 3% 3 mph ESE 28%
12 PM 40° Clear 3% 3 mph SE 26%
1 PM 41° Clear 3% 3 mph SSE 25%
2 PM 42° Clear 3% 3 mph SSE 24%
3 PM 42° Clear 3% 3 mph SSE 23%
4 PM 43° Mostly Clear 3% 3 mph SSE 22%
15-Day Forecast
Today
7/22
Clear
8%
24°
41°
Thu
7/23
Clear
12%
31°
43°
Fri
7/24
Clear
5%
32°
47°
Sat
7/25
Clear
39%
32°
46°
Sun
7/26
Drizzle
52%
32°
40°
Mon
7/27
Heavy Rain
80%
29°
41°
Tue
7/28
Mostly Cloudy
53%
29°
40°
Wed
7/29
Mostly Cloudy
59%
29°
41°
Thu
7/30
Rain
58%
30°
42°
Fri
7/31
Partly Cloudy
44%
29°
42°
Sat
8/1
Drizzle
60%
29°
43°
Sun
8/2
Clear
25%
32°
42°
Mon
8/3
Drizzle
60%
32°
42°
Tue
8/4
Drizzle
60%
32°
42°
Wed
8/5
Drizzle
60%
32°
41°
87
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
27 AQI 4.9 µg/m³
O3
Ground-level ozone
Dominant
87 AQI 67 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 87 Moderate 87 27
Fri 77 Moderate 77 33
Sat 104 Unhealthy for Sensitive Groups 104 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, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1084 J/kg
MLCAPE380 J/kg
MUCAPE1084 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-2.4
Kinematics
0–6 km Shear1 kt
0–1 km Shear1 kt
Eff. Shear1 kt
0–1 km SRH2
0–3 km SRH36
Eff. SRH36
Storm Motion94° @ 18 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index38.1
Thermo & Levels
PWAT1.78 in
0–3 km LR9.3 °C/km
700–500 LR5.8 °C/km
Total Totals47.2
LCL698 hPa
LFC956 hPa
EL166 hPa
Freezing Lvl16,001 ft