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WeatherLive › California › Diamond Bar

Diamond Bar, CA Weather (91765)

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherDiamond Bar · 10:40 PM PDT
97° | 69°
71°F
Feels like 62°
Sunny
WindSW 22 mph · Gusts 33 mph
Precip2% · –
Humidity71% · Dew point 61°
UV index10 Very high
Air Quality53 Moderate
Pressure29.80 inHg
Visibility6 mi
Sunrise / Sunset6:13 AM · 7:37 PM · 13h 24m

Weather map — Diamond Bar

Full radar →
Now
71°
6%
22 mph
23:00
69°
18%
24 mph
00:00
67°
21%
21 mph
01:00
66°
24%
22 mph
02:00
65°
25%
21 mph
03:00
64°
26%
19 mph
04:00
64°
27%
20 mph
05:00
52°
17%
20 mph
06:00
53°
14%
20 mph
07:00
53°
17%
19 mph
08:00
51°
26%
20 mph
09:00
51°
26%
19 mph
10:00
52°
18%
16 mph
11:00
52°
17%
17 mph
12:00
52°
22%
18 mph
13:00
52°
10%
19 mph
14:00
53°
17%
17 mph
15:00
53°
17%
17 mph
16:00
53°
17%
17 mph
17:00
53°
22%
18 mph
18:00
53°
22%
18 mph
19:00
53°
20%
19 mph
20:00
53°
17%
17 mph
21:00
53°
17%
16 mph

Today · Sun 8/16

High 97°
2% / –

Sunny. Winds SW at 24 mph.

Tonight · Sun 8/16

Low 51°
18% / –

Mostly cloudy. Winds SW at 24 mph.

Tomorrow · Mon 8/17

67° | 51°
57% / 0.06 in

Showers. Winds SW at 22 mph.

7-day trend

Diamond Bar · temperature + precipitation

10-day forecast

Updated 10:40 PM

Details & indices

Wind
22 mph SW
Gusts 33 mph
Humidity
71%
Dew point 61°
Pressure
29.80 inHg
Falling
UV index
10 — Very high
High today
Air Quality
Moderate
AQI 53 · US EPA
Allergy
Very high
Mugwort
Visibility
6 mi
Clear view
Allergy — Diamond Bar

🌿 Conditions right now

View all →
Birch
None
Grass
Moderate
Oak
None
Alder
None
Hazel
None
Mugwort
High
Ragweed
Low

Sun & moon

Sunrise6:13 AM
Sunset7:37 PM
Length of day13h 24m
Moonrise10:25 AM
Moonset9:46 PM
Moon phase🌒 Waxing Crescent · 23%
Next full moonAug 27 Sturgeon Moon
Latitude34.0286°N
Longitude-117.8103°E

Water temps nearby

View all →
Huntington Beach (28 mi)72°
Newport Beach (30 mi)73°
Laguna Beach (34 mi)73°
Venice Beach (38 mi)73°
Santa Monica Beach (39 mi)73°
Zuma Beach, Malibu (58 mi)72°
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Great
Line-drying weather
Grilling
Great
Fire up the grill
Running
Poor
Lace up outside
Patio
Great
Dinner outdoors
Nearby places in {{REGION}}
Los Angeles
Sunny
76° 🌤️
San Diego
—
— 🌤️
San Jose
—
— 🌤️
San Francisco
—
— 🌤️
Fresno
—
— 🌤️
Sacramento
—
—
Data sources · Sunday, August 16
Where the Diamond Bar forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 34.0286°N, -117.8103°.
NBM + global weather models
Updated: 10:40 PM
Weather in Diamond Bar
Diamond Bar's outlook: warmest day near 97° (Sunday), coldest night about 51° (Monday). Models drop roughly 0.91 in of precipitation across the stretch — watch Friday (90%). Expect a blustery spell — gusts near 61 mph on Friday. No watches or warnings are active for the area right now. Right now Diamond Bar is about 23° cooler than nearby Riverside. Longer view: Mediterranean pattern — nearly all rain lands November through March.
Diamond Bar, CA · Elev 696 ft · 34.03°N, 117.81°W · California · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 10:40 PM