Heat Advisory — San Bernardino County Mountains, CA 10:00 PM

San Clemente, California

Last updated: 6:03 AM CDT  ·  Refresh
21°C
Feels like 24°
Mostly Clear
▲ 28°  /  ▼ 22°
Wind
2 mph S
Humidity
90%
Dew Point
20°
Pressure
29.67 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
24%
Sunrise
6:19 AM
Sunset
7:24 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: San Clemente is currently mostly clear at 21°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:19AM · Sunset: 7:24PM.

Alerts

Heat Advisory
San Bernardino County Mountains, CA
Expires 10:00 PM
49 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
21°
3%
5 AM
21°
3%
6 AM
21°
3%
7 AM
21°
3%
8 AM
23°
3%
9 AM
24°
3%
10 AM
26°
6%
11 AM
26°
5%
12 PM
27°
6%
1 PM
27°
6%
2 PM
28°
6%
3 PM
27°
6%
4 PM
27°
6%
5 PM
27°
6%
6 PM
26°
6%
7 PM
25°
3%
8 PM
24°
3%
9 PM
23°
3%
10 PM
23°
6%
11 PM
23°
6%
12 AM
23°
6%
1 AM
22°
6%
2 AM
22°
3%
3 AM
22°
3%
7-Day Forecast
Today
28° 22°
Mostly Clear.
Wed
28° 22°
Partly Cloudy.
Thu
29° 22°
Mostly Cloudy.
Fri
30° 23°
Partly Cloudy.
Sat
29° 22°
Mostly Clear.
Sun
28° 21°
Clear.
Mon
27° 20°
Mostly Clear.
TimeTempConditionsPrecipWindHumidity
Now 21° Mostly Clear 3% 2 mph S 90%
5 AM 21° Mostly Clear 3% 2 mph NNE 90%
6 AM 21° Mostly Clear 3% 2 mph ESE 87%
7 AM 21° Mostly Clear 3% 2 mph SSE 83%
8 AM 23° Mostly Clear 3% 2 mph SSW 78%
9 AM 24° Mostly Clear 3% 3 mph SW 74%
10 AM 26° Mostly Clear 6% 5 mph WSW 71%
11 AM 26° Mostly Clear 5% 6 mph WSW 68%
12 PM 27° Mostly Clear 6% 6 mph WSW 66%
1 PM 27° Mostly Clear 6% 7 mph WSW 64%
2 PM 28° Mostly Clear 6% 8 mph W 63%
3 PM 27° Mostly Clear 6% 7 mph W 64%
4 PM 27° Mostly Clear 6% 7 mph WSW 64%
5 PM 27° Mostly Clear 6% 7 mph WSW 66%
6 PM 26° Mostly Clear 6% 6 mph WSW 70%
7 PM 25° Mostly Clear 3% 4 mph SW 74%
8 PM 24° Mostly Clear 3% 4 mph SSW 78%
9 PM 23° Mostly Clear 3% 3 mph S 78%
10 PM 23° Mostly Clear 6% 3 mph S 78%
11 PM 23° Mostly Clear 6% 3 mph SSE 78%
12 AM 23° Mostly Clear 6% 3 mph SSE 78%
1 AM 22° Mostly Clear 6% 3 mph SSE 79%
2 AM 22° Mostly Clear 3% 3 mph SE 79%
3 AM 22° Mostly Clear 3% 2 mph SE 79%
15-Day Forecast
Today
8/25
Mostly Clear
6%
22°
28°
Wed
8/26
Partly Cloudy
19%
22°
28°
Thu
8/27
Mostly Cloudy
6%
22°
29°
Fri
8/28
Partly Cloudy
7%
23°
30°
Sat
8/29
Mostly Clear
3%
22°
29°
Sun
8/30
Clear
3%
21°
28°
Mon
8/31
Mostly Clear
15%
20°
27°
Tue
9/1
Clear
16%
19°
28°
Wed
9/2
Mostly Cloudy
35%
21°
28°
Thu
9/3
Clear
19%
21°
28°
Fri
9/4
Clear
25%
21°
29°
Sat
9/5
Drizzle
60%
21°
29°
Sun
9/6
Drizzle
60%
21°
29°
Mon
9/7
Clear
25%
21°
29°
Tue
9/8
Drizzle
60%
20°
28°
49
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
49 AQI 8.9 µg/m³
O3
Ground-level ozone
Dominant
49 AQI 54 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 49 Good 49 49
Wed 48 Good 48 43
Thu 54 Moderate 54 48
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 Tue Aug 25, 09:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE26 J/kg
MUCAPE40 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index1.0
Kinematics
0–6 km Shear17 kt
0–1 km Shear7 kt
Eff. Shear—
0–1 km SRH-28
0–3 km SRH2
Eff. SRH—
Storm Motion264° @ 15 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index26.2
Thermo & Levels
PWAT1.39 in
0–3 km LR2.5 °C/km
700–500 LR7.3 °C/km
Total Totals43.3
LCL984 hPa
LFC1005 hPa
EL1005 hPa
Freezing Lvl15,269 ft