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

Antelope Valley, California, United States

Last updated: 11:14 AM CDT  ·  Refresh
29°C
Feels like 27°
Mostly Clear
▲ 37°  /  ▼ 20°
Wind
15 mph WSW
Humidity
25%
Dew Point
7°
Pressure
27.35 inHg
Visibility
10 mi
UV Index
7.3
Cloud Cover
25%
Sunrise
5:53 AM
Sunset
8:02 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Antelope Valley is currently mostly clear at 29°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:53AM · Sunset: 8:02PM.

Alerts

Heat Advisory
Los Angeles County Inland Coast including Downtown Los Angeles, CA
Expires 10:00 PM
54 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
3%
10 AM
29°
3%
11 AM
31°
3%
12 PM
32°
3%
1 PM
35°
3%
2 PM
36°
3%
3 PM
35°
3%
4 PM
34°
3%
5 PM
37°
3%
6 PM
34°
3%
7 PM
33°
3%
8 PM
31°
3%
9 PM
28°
3%
10 PM
27°
3%
11 PM
26°
3%
12 AM
26°
3%
1 AM
24°
3%
2 AM
24°
3%
3 AM
24°
3%
4 AM
23°
3%
5 AM
21°
3%
6 AM
22°
3%
7 AM
23°
3%
8 AM
25°
3%
7-Day Forecast
Today
37° 20°
Clear.
Wed
38° 20°
Clear.
Thu
42° 19°
Clear.
Fri
42° 22°
Clear.
Sat
42° 24°
Clear.
Sun
43° 24°
Clear.
Mon
42° 23°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Clear 3% 15 mph WSW 25%
10 AM 29° Clear 3% 14 mph WSW 22%
11 AM 31° Clear 3% 16 mph WSW 20%
12 PM 32° Clear 3% 16 mph WSW 19%
1 PM 35° Clear 3% 18 mph WSW 18%
2 PM 36° Clear 3% 20 mph WSW 18%
3 PM 35° Clear 3% 21 mph WSW 18%
4 PM 34° Clear 3% 21 mph WSW 19%
5 PM 37° Clear 3% 20 mph WSW 20%
6 PM 34° Clear 3% 18 mph WSW 22%
7 PM 33° Clear 3% 16 mph WSW 25%
8 PM 31° Clear 3% 14 mph WSW 29%
9 PM 28° Clear 3% 13 mph WSW 35%
10 PM 27° Clear 3% 13 mph WSW 40%
11 PM 26° Clear 3% 12 mph WSW 44%
12 AM 26° Clear 3% 12 mph WSW 46%
1 AM 24° Clear 3% 11 mph WSW 49%
2 AM 24° Clear 3% 11 mph WSW 51%
3 AM 24° Clear 3% 10 mph WSW 53%
4 AM 23° Clear 3% 10 mph WSW 54%
5 AM 21° Clear 3% 10 mph WSW 54%
6 AM 22° Clear 3% 10 mph WSW 49%
7 AM 23° Clear 3% 10 mph W 45%
8 AM 25° Clear 3% 10 mph W 40%
15-Day Forecast
Today
7/21
Clear
3%
20°
37°
Wed
7/22
Clear
3%
20°
38°
Thu
7/23
Clear
3%
19°
42°
Fri
7/24
Clear
3%
22°
42°
Sat
7/25
Clear
3%
24°
42°
Sun
7/26
Clear
3%
24°
43°
Mon
7/27
Clear
3%
23°
42°
Tue
7/28
Clear
3%
23°
42°
Wed
7/29
Clear
19%
23°
40°
Thu
7/30
Clear
3%
24°
42°
Fri
7/31
Clear
25%
24°
39°
Sat
8/1
Clear
3%
24°
40°
Sun
8/2
Clear
3%
24°
40°
Mon
8/3
Clear
3%
23°
39°
Tue
8/4
Clear
3%
23°
39°
54
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
34 AQI 6.2 µg/m³
O3
Ground-level ozone
Dominant
54 AQI 56 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 54 Moderate 54 34
Thu 40 Good 40 21
Fri 42 Good 42 19
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, 14:00'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
MLCAPE9 J/kg
MUCAPE0 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index5.1
Kinematics
0–6 km Shear10 kt
0–1 km Shear14 kt
Eff. Shear—
0–1 km SRH29
0–3 km SRH-11
Eff. SRH—
Storm Motion355° @ 14 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index27.5
Thermo & Levels
PWAT1.34 in
0–3 km LR6.9 °C/km
700–500 LR6.9 °C/km
Total Totals42.2
LCL673 hPa
LFC926 hPa
EL891 hPa
Freezing Lvl13,442 ft