Ontario Hourly Weather Forecast
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Starting off Sunny skies, turning Clear conditions later in the day. Temps range from 74° to 85°. Light winds, shifting from WSW to S at 6.8 mph, with humidity ranging 15% to 37%, and an avg barometric pressure of 29.91 inHg.
Temp
Feel
Humidity
Wind
Pressure
Dew Point
UV
Precip.
3 PM
85°F
78°F
15%
6.9 WSW
29.89
33°F
3.6
1%
4 PM
85°F
77°F
18%
9.2 SW
29.89
37°F
1.9
0%
5 PM
83°F
75°F
24%
10.3 SW
29.89
42°F
0.6
0%
6 PM
80°F
74°F
33%
9.8 SW
29.9
48°F
0
1%
7 PM
78°F
73°F
36%
8.5 WSW
29.92
49°F
0
1%
8 PM
77°F
73°F
34%
6 WSW
29.93
47°F
0
1%
9 PM
76°F
73°F
33%
4.5 WSW
29.93
45°F
0
1%
10 PM
75°F
72°F
34%
3.6 SSW
29.94
45°F
0
1%
11 PM
74°F
72°F
37%
2.5 S
29.94
46°F
0
1%
Mon, Oct 19th 2026
Sunny skies in the morning, with Clear conditions expected by night. Temps range from 71° to 84°. Light winds, shifting from SE to WSW at 4.1 mph, while humidity ranges from 26% to 50%, and an avg barometric pressure of 29.88 inHg.
Temp
Feel
Humidity
Wind
Pressure
Dew Point
UV
Precip.
12 AM
73°F
72°F
39%
1.1 SE
29.93
47°F
0
1%
1 AM
73°F
72°F
39%
0.7 SE
29.92
47°F
0
1%
2 AM
73°F
71°F
39%
0.9 SSE
29.92
46°F
0
1%
3 AM
72°F
71°F
40%
0.7 SSE
29.91
46°F
0
1%
4 AM
71°F
70°F
40%
0.7 SW
29.9
46°F
0
1%
5 AM
71°F
70°F
41%
0.7 WNW
29.91
46°F
0
1%
6 AM
71°F
69°F
40%
0.7 NNE
29.91
46°F
0
1%
7 AM
71°F
69°F
39%
1.1 ENE
29.91
45°F
0
1%
8 AM
72°F
70°F
36%
1.1 E
29.91
44°F
0.2
1%
9 AM
75°F
72°F
33%
2 SE
29.92
44°F
0.9
1%
10 AM
77°F
75°F
31%
2 SSE
29.92
44°F
2.3
1%
11 AM
79°F
77°F
29%
2.7 S
29.91
44°F
4
0%
12 PM
81°F
78°F
27%
4.5 SW
29.9
44°F
5.3
0%
1 PM
83°F
78°F
26%
6.5 SW
29.88
44°F
5.7
0%
2 PM
84°F
78°F
26%
8.1 WSW
29.84
45°F
5
0%
3 PM
84°F
77°F
27%
9.6 SW
29.83
46°F
3.5
0%
4 PM
82°F
76°F
28%
9.8 SW
29.82
46°F
1.8
0%
5 PM
81°F
75°F
30%
9.4 SW
29.82
47°F
0.6
0%
6 PM
78°F
73°F
33%
8.3 SW
29.82
47°F
0
1%
7 PM
76°F
72°F
37%
7.2 SW
29.83
48°F
0
1%
8 PM
75°F
71°F
42%
6.5 SW
29.85
50°F
0
1%
9 PM
74°F
71°F
45%
4.7 SW
29.84
51°F
0
1%
10 PM
73°F
71°F
48%
4.5 SW
29.85
52°F
0
1%
11 PM
72°F
71°F
50%
3.8 WSW
29.86
52°F
0
2%
Tue, Oct 20th 2026
Starting off Sunny skies, turning smoky haze later in the day. Temps range from 68° to 81°. Calm winds, shifting from WSW to SW at 2.7 mph, as humidity fluctuates between 31% to 66%, and an avg barometric pressure of 29.86 inHg.
Temp
Feel
Humidity
Wind
Pressure
Dew Point
UV
Precip.
12 AM
71°F
71°F
52%
2.9 WSW
29.85
53°F
0
2%
1 AM
71°F
70°F
54%
2.9 SW
29.85
53°F
0
2%
2 AM
70°F
70°F
55%
2 WSW
29.84
53°F
0
3%
3 AM
69°F
69°F
57%
2.2 WSW
29.84
54°F
0
3%
4 AM
69°F
68°F
59%
3.4 WSW
29.84
54°F
0
3%
5 AM
68°F
68°F
62%
3.1 WSW
29.85
55°F
0
4%
6 AM
68°F
69°F
64%
1.6 SW
29.85
55°F
0
4%
7 AM
68°F
69°F
66%
1.3 SSW
29.86
56°F
0
4%
8 AM
69°F
69°F
63%
1.3 WSW
29.87
55°F
0.2
4%
9 AM
70°F
71°F
56%
1.6 SW
29.88
54°F
0.9
3%
10 AM
73°F
72°F
50%
2.7 SSW
29.89
53°F
2.3
2%
11 AM
75°F
74°F
44%
2.9 SSW
29.88
52°F
4
1%
12 PM
78°F
76°F
38%
3.4 S
29.87
50°F
5.3
1%
1 PM
80°F
77°F
33%
3.8 S
29.85
48°F
5.7
1%
2 PM
81°F
77°F
31%
4.9 SW
29.82
47°F
5
1%
This hour by hour weather report is relevant for ZIP codes 91758, 91761, 91762, 91764, and 91798, accurately covering areas of Ontario, CA.
Currently
|
84°F |
29.94 inHg.
Barometer 15%
Humidity SSW 3.4mph Wind |
| Sunny | ||
National Outlook
Coastal Impacts for Mid-Atlantic and Flash Flooding in South Florida - 10-18 to 10-20
Sun Oct 18th 2026, 9:10am PDT
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