Heat Advisory — Los Angeles County Inland Coast including Downtown Los Angeles, CA 10:00 PM

Unincorporated Chatsworth, California

Last updated: 11:17 AM CDT  ·  Refresh
24°C
Feels like 22°
Clear
▲ 30°  /  ▼ 18°
Wind
7 mph S
Humidity
46%
Dew Point
12°
Pressure
28.11 inHg
Visibility
10 mi
UV Index
7.4
Cloud Cover
10%
Sunrise
5:56 AM
Sunset
8:03 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Unincorporated Chatsworth is currently clear at 24°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:56AM · Sunset: 8:03PM.

Alerts

Heat Advisory
Los Angeles County Inland Coast including Downtown Los Angeles, CA
Expires 10:00 PM
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
3%
10 AM
23°
3%
11 AM
24°
3%
12 PM
26°
3%
1 PM
29°
3%
2 PM
30°
3%
3 PM
29°
3%
4 PM
28°
3%
5 PM
30°
3%
6 PM
28°
3%
7 PM
27°
3%
8 PM
25°
3%
9 PM
23°
3%
10 PM
22°
3%
11 PM
22°
3%
12 AM
21°
3%
1 AM
21°
3%
2 AM
21°
3%
3 AM
20°
3%
4 AM
19°
3%
5 AM
18°
3%
6 AM
18°
3%
7 AM
18°
3%
8 AM
19°
3%
7-Day Forecast
Today
30° 18°
Clear.
Wed
31° 18°
Clear.
Thu
37° 21°
Clear.
Fri
36° 22°
Clear.
Sat
36° 21°
Clear.
Sun
36° 21°
Clear.
Mon
35° 22°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 24° Clear 3% 7 mph S 46%
10 AM 23° Clear 3% 8 mph S 39%
11 AM 24° Clear 3% 9 mph SSW 35%
12 PM 26° Clear 3% 9 mph SSW 32%
1 PM 29° Clear 3% 10 mph SW 29%
2 PM 30° Clear 3% 12 mph WSW 26%
3 PM 29° Clear 3% 11 mph WSW 26%
4 PM 28° Clear 3% 11 mph WSW 27%
5 PM 30° Clear 3% 10 mph WSW 30%
6 PM 28° Clear 3% 9 mph W 42%
7 PM 27° Clear 3% 7 mph W 54%
8 PM 25° Clear 3% 5 mph W 65%
9 PM 23° Clear 3% 4 mph W 70%
10 PM 22° Clear 3% 4 mph WNW 75%
11 PM 22° Clear 3% 3 mph WNW 78%
12 AM 21° Clear 3% 2 mph WSW 80%
1 AM 21° Clear 3% 2 mph S 81%
2 AM 21° Clear 3% 2 mph S 82%
3 AM 20° Clear 3% 2 mph SSE 82%
4 AM 19° Clear 3% 2 mph SSE 83%
5 AM 18° Clear 3% 2 mph SSE 82%
6 AM 18° Clear 3% 2 mph SSE 80%
7 AM 18° Clear 3% 2 mph SSE 77%
8 AM 19° Clear 3% 3 mph S 73%
15-Day Forecast
Today
7/21
Clear
3%
18°
30°
Wed
7/22
Clear
3%
18°
31°
Thu
7/23
Clear
3%
21°
37°
Fri
7/24
Clear
3%
22°
36°
Sat
7/25
Clear
3%
21°
36°
Sun
7/26
Clear
3%
21°
36°
Mon
7/27
Clear
3%
22°
35°
Tue
7/28
Clear
3%
19°
33°
Wed
7/29
Clear
19%
19°
34°
Thu
7/30
Clear
3%
21°
36°
Fri
7/31
Clear
3%
22°
34°
Sat
8/1
Clear
3%
22°
35°
Sun
8/2
Clear
3%
22°
34°
Mon
8/3
Clear
3%
21°
34°
Tue
8/4
Clear
3%
21°
34°
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
47 AQI 52 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 53 Moderate 47 53
Thu 45 Good 45 38
Fri 84 Moderate 84 52
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 Jul 21, 15:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE7 J/kg
MLCAPE15 J/kg
MUCAPE0 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index4.9
Kinematics
0–6 km Shear2 kt
0–1 km Shear15 kt
Eff. Shear—
0–1 km SRH-42
0–3 km SRH-3
Eff. SRH—
Storm Motion262° @ 18 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index22.8
Thermo & Levels
PWAT1.22 in
0–3 km LR5.1 °C/km
700–500 LR6.5 °C/km
Total Totals36.4
LCL804 hPa
LFC952 hPa
EL923 hPa
Freezing Lvl14,459 ft