Excessive Heat Watch 10:00 PM Excessive Heat Warning — Cuyama Valley, CA, Catalina and Santa Barbara Islands, CA, Santa Barbara County Southwestern Coast, CA, Santa Barbara County Southeastern Coast, CA, Ventura County Beaches, CA, Ventura County Inland Coast, CA, Malibu Coast, CA, Los Angeles County Beaches, CA, Palos Verdes Hills, CA, Los Angeles County Inland Coast including Downtown Los Angeles, CA, Santa Clarita Valley, CA, Santa Ynez Mountains Western Range, CA, Santa Ynez Mountains Eastern Range, CA, Santa Barbara County Interior Mountains, CA, Lake Casitas, CA, Ojai Valley, CA, Central Ventura County Valleys, CA, Western Santa Monica Mountains Recreational Area, CA, Eastern Santa Monica Mountains Recreational Area, CA, Calabasas and Agoura Hills, CA, Western San Fernando Valley, CA, Eastern San Fernando Valley, CA, Southeastern Ventura County Valleys, CA, Santa Susana Mountains, CA, Southern Ventura County Mountains, CA, Interstate 5 Corridor, CA, Western San Gabriel Mountains and Highway 14 Corridor, CA, Eastern San Gabriel Mountains, CA, Los Angeles County San Gabriel Valley, CA, Western Antelope Valley Foothills, CA, Eastern Antelope Valley Foothills, CA, Antelope Valley, CA, Santa Lucia Mountains, CA, Southern Salinas Valley, CA, San Luis Obispo County Interior Valleys, CA, San Luis Obispo County Mountains, CA, San Luis Obispo County Inland Central Coast, CA, Santa Barbara County Inland Central Coast, CA, Santa Ynez Valley, CA 10:00 PM

Unincorporated Chatsworth, California

Last updated: 3:46 AM CDT  ·  Refresh
26°C
Feels like 26°
Clear
▲ 37°  /  ▼ 23°
Wind
4 mph S
Humidity
44%
Dew Point
12°
Pressure
28.07 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
4%
Sunrise
6:21 AM
Sunset
7:29 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Unincorporated Chatsworth is currently clear at 26°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:21AM · Sunset: 7:29PM.

Alerts

Excessive Heat Watch
Expires 10:00 PM
Excessive Heat Warning
Cuyama Valley, CA, Catalina and Santa Barbara Islands, CA, Santa Barbara County Southwestern Coast, CA, Santa Barbara County Southeastern Coast, CA, Ventura County Beaches, CA, Ventura County Inland Coast, CA, Malibu Coast, CA, Los Angeles County Beaches, CA, Palos Verdes Hills, CA, Los Angeles County Inland Coast including Downtown Los Angeles, CA, Santa Clarita Valley, CA, Santa Ynez Mountains Western Range, CA, Santa Ynez Mountains Eastern Range, CA, Santa Barbara County Interior Mountains, CA, Lake Casitas, CA, Ojai Valley, CA, Central Ventura County Valleys, CA, Western Santa Monica Mountains Recreational Area, CA, Eastern Santa Monica Mountains Recreational Area, CA, Calabasas and Agoura Hills, CA, Western San Fernando Valley, CA, Eastern San Fernando Valley, CA, Southeastern Ventura County Valleys, CA, Santa Susana Mountains, CA, Southern Ventura County Mountains, CA, Interstate 5 Corridor, CA, Western San Gabriel Mountains and Highway 14 Corridor, CA, Eastern San Gabriel Mountains, CA, Los Angeles County San Gabriel Valley, CA, Western Antelope Valley Foothills, CA, Eastern Antelope Valley Foothills, CA, Antelope Valley, CA, Santa Lucia Mountains, CA, Southern Salinas Valley, CA, San Luis Obispo County Interior Valleys, CA, San Luis Obispo County Mountains, CA, San Luis Obispo County Inland Central Coast, CA, Santa Barbara County Inland Central Coast, CA, Santa Ynez Valley, CA
Expires 10:00 PM
71 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
3%
2 AM
24°
4%
3 AM
24°
4%
4 AM
24°
4%
5 AM
21°
4%
6 AM
21°
4%
7 AM
23°
4%
8 AM
26°
3%
9 AM
28°
3%
10 AM
30°
3%
11 AM
32°
3%
12 PM
33°
3%
1 PM
37°
3%
2 PM
37°
3%
3 PM
36°
3%
4 PM
36°
3%
5 PM
37°
3%
6 PM
36°
3%
7 PM
34°
3%
8 PM
32°
3%
9 PM
29°
3%
10 PM
28°
3%
11 PM
28°
3%
12 AM
28°
3%
7-Day Forecast
Today
37° 23°
Partly Cloudy.
Wed
38° 23°
Clear.
Thu
34° 22°
Partly Cloudy with a 21% chance of rain.
Fri
34° 22°
Partly Cloudy.
Sat
34° 21°
Clear.
Sun
33° 18°
Clear.
Mon
31° 16°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Clear 3% 4 mph S 44%
2 AM 24° Partly Cloudy 4% 2 mph WSW 43%
3 AM 24° Mostly Cloudy 4% 2 mph NW 40%
4 AM 24° Overcast 4% 3 mph NNW 37%
5 AM 21° Mostly Cloudy 4% 3 mph N 36%
6 AM 21° Mostly Cloudy 4% 3 mph NNE 35%
7 AM 23° Mostly Cloudy 4% 3 mph NNE 33%
8 AM 26° Partly Cloudy 3% 2 mph NNW 29%
9 AM 28° Partly Cloudy 3% 2 mph SSW 25%
10 AM 30° Partly Cloudy 3% 4 mph SSW 23%
11 AM 32° Partly Cloudy 3% 6 mph SSW 21%
12 PM 33° Partly Cloudy 3% 8 mph SW 20%
1 PM 37° Partly Cloudy 3% 9 mph SW 20%
2 PM 37° Partly Cloudy 3% 10 mph SW 20%
3 PM 36° Partly Cloudy 3% 9 mph SW 20%
4 PM 36° Partly Cloudy 3% 9 mph WSW 21%
5 PM 37° Partly Cloudy 3% 8 mph WSW 23%
6 PM 36° Partly Cloudy 3% 6 mph WSW 26%
7 PM 34° Partly Cloudy 3% 5 mph WSW 29%
8 PM 32° Partly Cloudy 3% 4 mph SW 33%
9 PM 29° Mostly Clear 3% 4 mph SSW 36%
10 PM 28° Mostly Clear 3% 4 mph SSW 38%
11 PM 28° Mostly Clear 3% 4 mph S 39%
12 AM 28° Mostly Clear 3% 4 mph S 40%
15-Day Forecast
Today
8/25
Partly Cloudy
4%
23°
37°
Wed
8/26
Clear
3%
23°
38°
Thu
8/27
Partly Cloudy
21%
22°
34°
Fri
8/28
Partly Cloudy
7%
22°
34°
Sat
8/29
Clear
3%
21°
34°
Sun
8/30
Clear
3%
18°
33°
Mon
8/31
Clear
8%
16°
31°
Tue
9/1
Drizzle
42%
16°
31°
Wed
9/2
Clear
19%
19°
32°
Thu
9/3
Rain
63%
20°
33°
Fri
9/4
Clear
25%
20°
32°
Sat
9/5
Clear
25%
19°
32°
Sun
9/6
Clear
3%
19°
32°
Mon
9/7
Clear
25%
20°
32°
Tue
9/8
Clear
25%
20°
31°
71
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
42 AQI 7.6 µg/m³
O3
Ground-level ozone
Dominant
71 AQI 62 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 71 Moderate 71 42
Wed 87 Moderate 87 42
Thu 104 Unhealthy for Sensitive Groups 104 46
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 LCL0°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 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE21 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index2.8
Kinematics
0–6 km Shear16 kt
0–1 km Shear7 kt
Eff. Shear—
0–1 km SRH-26
0–3 km SRH4
Eff. SRH—
Storm Motion284° @ 15 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index24.3
Thermo & Levels
PWAT0.99 in
0–3 km LR5.3 °C/km
700–500 LR7.6 °C/km
Total Totals44.4
LCL779 hPa
LFC—
EL—
Freezing Lvl13,911 ft