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: 6:02 PM CDT  ·  Refresh
39°C
Feels like 41°
Clear
▲ 45°  /  ▼ 29°
Wind
3 mph NE
Humidity
25%
Dew Point
16°
Pressure
28.61 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 40°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 897 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°
7%
5 PM
45°
7%
6 PM
44°
7%
7 PM
43°
4%
8 PM
42°
4%
9 PM
39°
4%
10 PM
39°
4%
11 PM
38°
4%
12 AM
38°
4%
1 AM
37°
4%
2 AM
36°
4%
3 AM
35°
3%
4 AM
34°
3%
5 AM
33°
3%
6 AM
33°
3%
7 AM
35°
3%
8 AM
36°
3%
9 AM
37°
3%
10 AM
38°
3%
11 AM
40°
3%
12 PM
41°
3%
1 PM
42°
3%
2 PM
42°
3%
3 PM
44°
3%
7-Day Forecast
Today
45° 29°
Clear.
Thu
46° 33°
Clear.
Fri
48° 34°
Clear.
Sat
47° 33°
Clear.
Sun
42° 33°
Mostly Cloudy with a 42% chance of rain.
Mon
42° 30°
Rain, 78% chance.
Tue
41° 29°
Overcast with a 78% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 39° Clear 7% 3 mph NE 25%
5 PM 45° Clear 7% 3 mph W 23%
6 PM 44° Clear 7% 3 mph NNE 25%
7 PM 43° Clear 4% 5 mph NE 28%
8 PM 42° Clear 4% 7 mph NE 30%
9 PM 39° Clear 4% 5 mph ENE 31%
10 PM 39° Clear 4% 3 mph E 32%
11 PM 38° Clear 4% 3 mph ESE 32%
12 AM 38° Clear 4% 3 mph ESE 33%
1 AM 37° Clear 4% 3 mph E 35%
2 AM 36° Clear 4% 4 mph E 36%
3 AM 35° Clear 3% 4 mph ESE 39%
4 AM 34° Clear 3% 5 mph E 42%
5 AM 33° Clear 3% 5 mph E 44%
6 AM 33° Clear 3% 5 mph E 44%
7 AM 35° Clear 3% 4 mph E 43%
8 AM 36° Clear 3% 4 mph E 40%
9 AM 37° Clear 3% 4 mph E 35%
10 AM 38° Clear 3% 4 mph E 31%
11 AM 40° Clear 3% 4 mph E 28%
12 PM 41° Clear 3% 3 mph E 27%
1 PM 42° Clear 3% 3 mph E 26%
2 PM 42° Clear 3% 2 mph ESE 25%
3 PM 44° Clear 3% 2 mph ESE 24%
15-Day Forecast
Today
7/22
Clear
7%
29°
45°
Thu
7/23
Clear
4%
33°
46°
Fri
7/24
Clear
3%
34°
48°
Sat
7/25
Clear
17%
33°
47°
Sun
7/26
Mostly Cloudy
42%
33°
42°
Mon
7/27
Rain
78%
30°
42°
Tue
7/28
Overcast
78%
29°
41°
Wed
7/29
Drizzle
66%
31°
42°
Thu
7/30
Drizzle
50%
31°
42°
Fri
7/31
Partly Cloudy
36%
33°
43°
Sat
8/1
Drizzle
60%
31°
43°
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
Thu 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, 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
SBCAPE646 J/kg
MLCAPE24 J/kg
MUCAPE646 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-1.4
Kinematics
0–6 km Shear3 kt
0–1 km Shear2 kt
Eff. Shear3 kt
0–1 km SRH-6
0–3 km SRH8
Eff. SRH8
Storm Motion41° @ 20 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado-0.0
STP (eff)0.0
Supercell0.0
K-Index33.5
Thermo & Levels
PWAT1.66 in
0–3 km LR9.5 °C/km
700–500 LR5.7 °C/km
Total Totals45.0
LCL692 hPa
LFC969 hPa
EL191 hPa
Freezing Lvl16,453 ft