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

Chiriaco Summit, California

Last updated: 6:03 PM CDT  ·  Refresh
38°C
Feels like 38°
Clear
▲ 43°  /  ▼ 28°
Wind
10 mph SW
Humidity
21%
Dew Point
12°
Pressure
27.83 inHg
Visibility
10 mi
UV Index
7.7
Cloud Cover
8%
Sunrise
5:47 AM
Sunset
7:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Chiriaco Summit is currently clear at 38°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:47AM · Sunset: 7:50PM.

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
51 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
38°
3%
5 PM
43°
3%
6 PM
42°
3%
7 PM
41°
3%
8 PM
39°
3%
9 PM
37°
3%
10 PM
36°
3%
11 PM
35°
3%
12 AM
34°
3%
1 AM
33°
3%
2 AM
33°
3%
3 AM
33°
3%
4 AM
32°
3%
5 AM
30°
3%
6 AM
31°
3%
7 AM
33°
3%
8 AM
34°
3%
9 AM
36°
3%
10 AM
37°
3%
11 AM
39°
3%
12 PM
40°
3%
1 PM
40°
3%
2 PM
41°
3%
3 PM
42°
3%
7-Day Forecast
Today
43° 28°
Clear.
Thu
44° 30°
Clear.
Fri
43° 32°
Clear.
Sat
44° 31°
Clear.
Sun
42° 30°
Mostly Clear.
Mon
42° 29°
Clear.
Tue
42° 29°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 38° Clear 3% 10 mph SW 21%
5 PM 43° Mostly Clear 3% 9 mph SW 20%
6 PM 42° Mostly Clear 3% 8 mph SW 22%
7 PM 41° Clear 3% 8 mph WSW 24%
8 PM 39° Clear 3% 6 mph WSW 26%
9 PM 37° Clear 3% 5 mph W 28%
10 PM 36° Clear 3% 4 mph W 30%
11 PM 35° Clear 3% 3 mph WNW 32%
12 AM 34° Clear 3% 3 mph NW 32%
1 AM 33° Clear 3% 3 mph NNW 33%
2 AM 33° Clear 3% 4 mph N 33%
3 AM 33° Clear 3% 3 mph NNE 34%
4 AM 32° Clear 3% 3 mph NNE 34%
5 AM 30° Clear 3% 3 mph NNE 35%
6 AM 31° Clear 3% 4 mph NE 33%
7 AM 33° Clear 3% 4 mph NE 30%
8 AM 34° Clear 3% 4 mph NE 27%
9 AM 36° Clear 3% 3 mph SE 25%
10 AM 37° Clear 3% 4 mph SSE 23%
11 AM 39° Clear 3% 6 mph S 22%
12 PM 40° Clear 3% 6 mph S 21%
1 PM 40° Clear 3% 6 mph S 21%
2 PM 41° Clear 3% 6 mph S 20%
3 PM 42° Clear 3% 7 mph SSW 20%
15-Day Forecast
Today
7/22
Clear
3%
28°
43°
Thu
7/23
Clear
3%
30°
44°
Fri
7/24
Clear
3%
32°
43°
Sat
7/25
Clear
8%
31°
44°
Sun
7/26
Mostly Clear
16%
30°
42°
Mon
7/27
Clear
8%
29°
42°
Tue
7/28
Clear
17%
29°
42°
Wed
7/29
Mostly Clear
18%
28°
41°
Thu
7/30
Mostly Clear
3%
29°
42°
Fri
7/31
Partly Cloudy
19%
30°
43°
Sat
8/1
Mostly Clear
3%
30°
44°
Sun
8/2
Clear
3%
30°
44°
Mon
8/3
Clear
25%
29°
44°
Tue
8/4
Clear
3%
29°
43°
Wed
8/5
Clear
3%
28°
42°
51
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
34 AQI 6.2 µg/m³
O3
Ground-level ozone
Dominant
51 AQI 55 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 51 Moderate 51 34
Fri 45 Good 45 28
Sat 47 Good 47 25
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
SBCAPE151 J/kg
MLCAPE14 J/kg
MUCAPE151 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index0.2
Kinematics
0–6 km Shear10 kt
0–1 km Shear5 kt
Eff. Shear12 kt
0–1 km SRH-22
0–3 km SRH-40
Eff. SRH-40
Storm Motion337° @ 14 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado-0.0
STP (eff)0.0
Supercell0.0
K-Index35.9
Thermo & Levels
PWAT1.56 in
0–3 km LR9.6 °C/km
700–500 LR6.1 °C/km
Total Totals45.1
LCL643 hPa
LFC942 hPa
EL384 hPa
Freezing Lvl15,144 ft