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WeatherLive › California › Ontario

Ontario, CA Weather

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherOntario · 2:57 PM PDT
92° | 65°
91°F
Feels like 94°
Sunny
WindSW 5 mph · Gusts 6 mph
Precip5% · –
Humidity44% · Dew point 66°
UV index9 Very high
Air Quality47 Good
Pressure29.91 inHg
Visibility6 mi
Sunrise / Sunset6:10 AM · 7:40 PM · 13h 30m

Weather map — Ontario

Full radar →
Now
87°
1%
7 mph
15:00
92°
1%
9 mph
16:00
90°
1%
10 mph
17:00
86°
2%
11 mph
18:00
80°
3%
9 mph
19:00
79°
4%
9 mph
20:00
71°
6%
7 mph
21:00
69°
8%
6 mph
22:00
71°
7%
6 mph
23:00
70°
5%
4 mph
00:00
69°
6%
4 mph
01:00
69°
7%
5 mph
02:00
68°
9%
5 mph
03:00
67°
11%
3 mph
04:00
67°
9%
2 mph
05:00
67°
8%
2 mph
06:00
67°
8%
2 mph
07:00
68°
7%
3 mph
08:00
70°
5%
3 mph
09:00
73°
3%
4 mph
10:00
76°
2%
5 mph
11:00
79°
1%
6 mph
12:00
82°
1%
6 mph
13:00
85°
1%
7 mph

Today · Thu 8/13

High 92°
5% / –

Sunny. Winds SW at 11 mph.

Tonight · Thu 8/13

Low 67°
8% / –

Sunny. Winds SW at 6 mph.

Tomorrow · Fri 8/14

86° | 67°
3% / –

Sunny. Winds SW at 11 mph.

7-day trend

Ontario · temperature + precipitation

10-day forecast

Updated 2:57 PM

Details & indices

Wind
5 mph SW
Gusts 6 mph
Humidity
44%
Dew point 66°
Pressure
29.91 inHg
Rising
UV index
9 — Very high
High today
Air Quality
Good
AQI 47 · US EPA
Allergy
Very high
Mugwort
Visibility
6 mi
Clear view
Allergy — Ontario

🌿 Conditions right now

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

Sun & moon

Sunrise6:10 AM
Sunset7:40 PM
Length of day13h 30m
Moonrise6:57 AM
Moonset8:18 PM
Moon phase🌔 New Moon
Latitude34.0633°N
Longitude-117.6509°E

Water temps nearby

View all →
Huntington Beach (35 mi)74°
Newport Beach (35 mi)74°
Laguna Beach (37 mi)75°
Venice Beach (47 mi)73°
Santa Monica Beach (48 mi)73°
🌤️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
Fair
Lace up outside
Patio
Great
Dinner outdoors
Nearby places in {{REGION}}
Los Angeles
Sunny
90°
San Diego
Sunny
83° 🌤️
San Jose
—
—
San Francisco
Partly cloudy
64°
Fresno
Sunny
98°
Sacramento
Sunny
81°
Data sources · Thursday, August 13
Where the Ontario 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: 34.0633°N, -117.6509°.
NBM + global weather models
Updated: 2:57 PM
Weather in Ontario
Over the next 10 days Ontario tops out around 97° (Tuesday) and dips to 65° on the coolest night (Thursday). Essentially no rain is in the forecast — expect a dry stretch. No active NWS alerts at the moment — quiet on the hazards front. Right now Ontario is about 11° cooler than nearby Bakersfield. Longer view: Mediterranean pattern — nearly all rain lands November through March.
Ontario, CA · Elev 1,004 ft · 34.06°N, 117.65°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: 2:57 PM