Excessive Heat Warning — San Bernardino and Riverside County Valleys-The Inland Empire, CA, San Diego County Inland Valleys, CA, Santa Ana Mountains and Foothills, CA, San Diego County Mountains, CA, Apple and Lucerne Valleys, CA, Coachella Valley, CA, San Diego County Deserts, CA, San Gorgonio Pass Near Banning, CA, Orange County Inland, CA, San Diego County Coastal Areas, CA, San Bernardino County Mountains, CA, Riverside County Mountains, CA, Orange County Coastal, CA 10:00 PM

San Diego County Deserts, CA

Last updated: 12:15 AM CDT  ·  Refresh
28°C
Feels like 32°
Partly Cloudy
▲ 32°  /  ▼ 23°
Wind
7 mph SSW
Humidity
83%
Dew Point
24°
Pressure
29.92 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
58%
Sunrise
6:38 AM
Sunset
7:33 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: San Diego County Deserts is currently partly cloudy at 28°C. Precipitation is likely — peak probability 90% around 3 PM. Atmospheric instability is elevated (CAPE up to 2421 J/kg) — isolated convective development possible. Sunrise: 6:38AM · Sunset: 7:33PM.

Alerts

Excessive Heat Warning
San Bernardino and Riverside County Valleys-The Inland Empire, CA, San Diego County Inland Valleys, CA, Santa Ana Mountains and Foothills, CA, San Diego County Mountains, CA, Apple and Lucerne Valleys, CA, Coachella Valley, CA, San Diego County Deserts, CA, San Gorgonio Pass Near Banning, CA, Orange County Inland, CA, San Diego County Coastal Areas, CA, San Bernardino County Mountains, CA, Riverside County Mountains, CA, Orange County Coastal, CA
Expires 10:00 PM
62 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
31%
1 AM
27°
47%
2 AM
27°
47%
3 AM
27°
49%
4 AM
27°
54%
5 AM
24°
57%
6 AM
24°
71%
7 AM
24°
59%
8 AM
25°
45%
9 AM
26°
59%
10 AM
27°
68%
11 AM
27°
80%
12 PM
28°
85%
1 PM
31°
80%
2 PM
29°
80%
3 PM
28°
90%
4 PM
28°
72%
5 PM
28°
72%
6 PM
28°
61%
7 PM
27°
61%
8 PM
27°
61%
9 PM
25°
51%
10 PM
25°
51%
11 PM
25°
51%
7-Day Forecast
Today
32° 23°
Rain, 90% chance.
Fri
32° 23°
Partly Cloudy with a 47% chance of rain.
Sat
34° 23°
Partly Cloudy with a 54% chance of rain.
Sun
31° 22°
Fog with a 90% chance of rain.
Mon
33° 23°
Rain, 90% chance.
Tue
34° 23°
Drizzle, 52% chance.
Wed
34° 24°
Drizzle, 44% chance.
TimeTempConditionsPrecipWindHumidity
Now 28° Partly Cloudy 31% 7 mph SSW 83%
1 AM 27° Partly Cloudy 47% 7 mph ESE 85%
2 AM 27° Mostly Cloudy 47% 6 mph ESE 87%
3 AM 27° Overcast 49% 5 mph SSE 88%
4 AM 27° Overcast 54% 4 mph WNW 90%
5 AM 24° Overcast 57% 4 mph N 91%
6 AM 24° Overcast 71% 3 mph NNW 92%
7 AM 24° Mostly Cloudy 59% 4 mph SSE 93%
8 AM 25° Mostly Cloudy 45% 4 mph SSW 90%
9 AM 26° Mostly Cloudy 59% 5 mph SW 86%
10 AM 27° Mostly Cloudy 68% 5 mph SW 82%
11 AM 27° Overcast 80% 6 mph SW 79%
12 PM 28° Overcast 85% 4 mph W 75%
1 PM 31° Overcast 80% 4 mph W 73%
2 PM 29° Overcast 80% 4 mph N 75%
3 PM 28° Rain 90% 4 mph ENE 78%
4 PM 28° Rain 72% 5 mph ESE 80%
5 PM 28° Rain 72% 4 mph ESE 83%
6 PM 28° Rain 61% 4 mph SE 87%
7 PM 27° Rain 61% 5 mph SE 90%
8 PM 27° Overcast 61% 4 mph SE 90%
9 PM 25° Mostly Cloudy 51% 4 mph SE 91%
10 PM 25° Mostly Cloudy 51% 4 mph ESE 91%
11 PM 25° Mostly Cloudy 51% 4 mph ESE 91%
15-Day Forecast
Today
8/27
Rain
90%
23°
32°
Fri
8/28
Partly Cloudy
47%
23°
32°
Sat
8/29
Partly Cloudy
54%
23°
34°
Sun
8/30
Fog
90%
22°
31°
Mon
8/31
Rain
90%
23°
33°
Tue
9/1
Drizzle
52%
23°
34°
Wed
9/2
Drizzle
44%
24°
34°
Thu
9/3
Clear
18%
23°
34°
Fri
9/4
Thunderstorm
68%
24°
35°
Sat
9/5
Rain
68%
23°
34°
Sun
9/6
Drizzle
60%
23°
36°
Mon
9/7
Drizzle
60%
23°
34°
Tue
9/8
Drizzle
60%
23°
33°
Wed
9/9
Drizzle
60%
23°
33°
Thu
9/10
Drizzle
60%
23°
33°
62
Moderate
U.S. Air Quality Index · Dominant: PM2.5
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
Dominant
62 AQI 15.3 µg/m³
O3
Ground-level ozone
49 AQI 53 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 62 Moderate 49 62
Fri 51 Moderate 26 51
Sat 61 Moderate 34 61
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 Thu Aug 27, 04:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2280 J/kg
MLCAPE2770 J/kg
MUCAPE4061 J/kg
SBCIN-153 J/kg
MLCIN-78 J/kg
Lifted Index-5.8
Kinematics
0–6 km Shear16 kt
0–1 km Shear2 kt
Eff. Shear17 kt
0–1 km SRH-19
0–3 km SRH7
Eff. SRH7
Storm Motion38° @ 15 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.8
Thermo & Levels
PWAT2.12 in
0–3 km LR5.5 °C/km
700–500 LR6.0 °C/km
Total Totals46.6
LCL966 hPa
LFC777 hPa
EL158 hPa
Freezing Lvl15,105 ft