Excessive Heat Watch 10:00 PM

Catalina and Santa Barbara Islands, CA

Last updated: 3:49 AM CDT  ·  Refresh
24°C
Feels like 28°
Mostly Clear
▲ 32°  /  ▼ 24°
Wind
1 mph NNE
Humidity
91%
Dew Point
23°
Pressure
29.96 inHg
Visibility
8 mi
UV Index
0.0
Cloud Cover
23%
Sunrise
6:37 AM
Sunset
7:35 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Catalina and Santa Barbara Islands is currently mostly clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2390 J/kg) — isolated convective development possible. Sunrise: 6:37AM · Sunset: 7:35PM.

Alerts

Excessive Heat Watch
Expires 10:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
26%
4 AM
24°
21%
5 AM
22°
23%
6 AM
23°
26%
7 AM
24°
28%
8 AM
26°
38%
9 AM
28°
40%
10 AM
29°
40%
11 AM
29°
37%
12 PM
30°
46%
1 PM
32°
47%
2 PM
32°
34%
3 PM
32°
35%
4 PM
32°
18%
5 PM
32°
14%
6 PM
32°
8%
7 PM
31°
9%
8 PM
30°
9%
9 PM
28°
9%
10 PM
27°
5%
11 PM
27°
5%
12 AM
27°
5%
1 AM
27°
5%
2 AM
27°
5%
7-Day Forecast
Today
32° 24°
Partly Cloudy with a 46% chance of rain.
Wed
36° 24°
Partly Cloudy with a 37% chance of rain.
Thu
36° 24°
Partly Cloudy with a 86% chance of rain.
Fri
31° 23°
Rain, 68% chance.
Sat
33° 23°
Drizzle, 51% chance.
Sun
33° 23°
Rain, 64% chance.
Mon
33° 23°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 26% 1 mph NNE 91%
4 AM 24° Mostly Clear 21% 2 mph NNE 90%
5 AM 22° Mostly Clear 23% 2 mph NE 90%
6 AM 23° Mostly Clear 26% 2 mph ENE 90%
7 AM 24° Mostly Clear 28% 2 mph NE 86%
8 AM 26° Partly Cloudy 38% 2 mph NNW 81%
9 AM 28° Mostly Clear 40% 4 mph NW 76%
10 AM 29° Partly Cloudy 40% 5 mph NW 73%
11 AM 29° Mostly Cloudy 37% 6 mph NW 70%
12 PM 30° Overcast 46% 7 mph NNW 66%
1 PM 32° Mostly Cloudy 47% 7 mph NNW 63%
2 PM 32° Partly Cloudy 34% 8 mph NNW 62%
3 PM 32° Drizzle 35% 8 mph NNW 61%
4 PM 32° Partly Cloudy 18% 6 mph NNW 62%
5 PM 32° Mostly Clear 14% 4 mph NW 63%
6 PM 32° Mostly Clear 8% 2 mph SW 66%
7 PM 31° Mostly Clear 9% 2 mph SSW 71%
8 PM 30° Clear 9% 3 mph SW 76%
9 PM 28° Clear 9% 4 mph SW 80%
10 PM 27° Clear 5% 3 mph SW 83%
11 PM 27° Clear 5% 3 mph WSW 85%
12 AM 27° Clear 5% 3 mph WSW 87%
1 AM 27° Clear 5% 2 mph WSW 88%
2 AM 27° Mostly Clear 5% 2 mph WSW 89%
15-Day Forecast
Today
8/25
Partly Cloudy
46%
24°
32°
Wed
8/26
Partly Cloudy
37%
24°
36°
Thu
8/27
Partly Cloudy
86%
24°
36°
Fri
8/28
Rain
68%
23°
31°
Sat
8/29
Drizzle
51%
23°
33°
Sun
8/30
Rain
64%
23°
33°
Mon
8/31
Drizzle
53%
23°
33°
Tue
9/1
Drizzle
43%
23°
34°
Wed
9/2
Rain
68%
24°
35°
Thu
9/3
Rain
64%
24°
35°
Fri
9/4
Drizzle
60%
23°
34°
Sat
9/5
Drizzle
60%
23°
33°
Sun
9/6
Drizzle
60%
23°
34°
Mon
9/7
Drizzle
60%
23°
33°
Tue
9/8
Drizzle
60%
23°
33°
53
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
53 AQI 10.1 µg/m³
O3
Ground-level ozone
35 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 53 Moderate 35 53
Wed 52 Moderate 40 52
Thu 55 Moderate 40 55
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, 07:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE438 J/kg
MLCAPE32 J/kg
MUCAPE438 J/kg
SBCIN-230 J/kg
MLCIN-264 J/kg
Lifted Index-1.7
Kinematics
0–6 km Shear26 kt
0–1 km Shear10 kt
Eff. Shear25 kt
0–1 km SRH3
0–3 km SRH114
Eff. SRH114
Storm Motion47° @ 20 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.7
K-Index37.3
Thermo & Levels
PWAT2.14 in
0–3 km LR4.7 °C/km
700–500 LR5.4 °C/km
Total Totals44.2
LCL997 hPa
LFC754 hPa
EL210 hPa
Freezing Lvl15,502 ft