Ontario, CA Hourly Weather Forecast
Next 48 Hours
Sat, Sep 19th 2026
Sunny skies in the morning, with Clear conditions expected by night. Warming trend from 64°F to 84°. Light winds from the SW at 6 mph, as humidity ranges 28% to 75%, and an avg barometric pressure of 29.91 inHg.
| Sat, Sep 19th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
5 AM Clear UV: 0 |
65°F Feels 65°F |
72% | 2.7 SW | 29.93 | 55.4°F | 6% |
6 AM ClearUV: 0 |
64°F Feels 64°F |
74% | 2.7 SW | 29.94 | 55.7°F | 7% |
7 AM Sunny UV: 0 |
64°F Feels 65°F |
75% | 2.5 SW | 29.95 | 56°F | 7% |
8 AM SunnyUV: 0.5 |
66°F Feels 66°F |
70% | 2.7 SW | 29.96 | 55.5°F | 6% |
9 AM SunnyUV: 1.8 |
68°F Feels 68°F |
61% | 2.9 WSW | 29.96 | 54.4°F | 4% |
10 AM SunnyUV: 3.9 |
72°F Feels 71°F |
51% | 3.8 WSW | 29.95 | 52.9°F | 2% |
11 AM SunnyUV: 6.2 |
75°F Feels 73°F |
43% | 5.1 WSW | 29.94 | 51.3°F | 1% |
12 PM SunnyUV: 7.9 |
78°F Feels 75°F |
37% | 6.3 WSW | 29.92 | 49.9°F | 1% |
1 PM SunnyUV: 8.4 |
81°F Feels 77°F |
32% | 7.4 WSW | 29.9 | 48.3°F | 1% |
2 PM SunnyUV: 7.6 |
83°F Feels 78°F |
29% | 8.5 WSW | 29.87 | 47.4°F | 0% |
3 PM SunnyUV: 5.6 |
84°F Feels 77°F |
28% | 9.6 WSW | 29.86 | 47.1°F | 0% |
4 PM SunnyUV: 3.2 |
83°F Feels 77°F |
30% | 10.1 WSW | 29.85 | 48.1°F | 0% |
5 PM SunnyUV: 1.3 |
81°F Feels 76°F |
34% | 10.1 WSW | 29.85 | 49.9°F | 1% |
6 PM SunnyUV: 0.3 |
78°F Feels 73°F |
38% | 9.2 SW | 29.86 | 50.9°F | 1% |
7 PM ClearUV: 0 |
76°F Feels 72°F |
44% | 7.6 SW | 29.87 | 51.8°F | 1% |
8 PM ClearUV: 0 |
74°F Feels 71°F |
48% | 6.5 SW | 29.89 | 53.1°F | 2% |
9 PM ClearUV: 0 |
72°F Feels 71°F |
52% | 5.6 SW | 29.9 | 53.9°F | 3% |
10 PM Partly Cloudy UV: 0 |
71°F Feels 70°F |
56% | 5.1 SW | 29.91 | 54.6°F | 5% |
11 PM Cloudy UV: 0 |
70°F Feels 69°F |
60% | 4.7 SW | 29.91 | 55.5°F | 9% |
Sun, Sep 20th 2026
Overcast conditions giving way to Clear conditions by evening. Warming trend from 66°F to 81°. Light winds from the SW at 5.8 mph, as humidity ranges 38% to 76%, and an avg barometric pressure of 29.9 inHg.
| Sun, Sep 20th | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 AM Partly CloudyUV: 0 |
69°F Feels 69°F |
63% | 3.8 WSW | 29.9 | 56.1°F | 9% |
1 AM Partly CloudyUV: 0 |
69°F Feels 69°F |
66% | 3.6 SW | 29.9 | 56.7°F | 9% |
2 AM Overcast UV: 0 |
68°F Feels 68°F |
68% | 3.1 WSW | 29.9 | 57°F | 17% |
3 AM OvercastUV: 0 |
68°F Feels 68°F |
69% | 3.1 SW | 29.89 | 57.3°F | 18% |
4 AM OvercastUV: 0 |
67°F Feels 67°F |
72% | 3.4 SW | 29.89 | 57.4°F | 19% |
5 AM OvercastUV: 0 |
66°F Feels 67°F |
73% | 3.4 SW | 29.9 | 57.6°F | 20% |
6 AM Smoky Haze UV: 0 |
66°F Feels 67°F |
75% | 2.7 SW | 29.9 | 57.8°F | 21% |
7 AM Smoky Haze UV: 0 |
66°F Feels 67°F |
76% | 2.5 SW | 29.91 | 58°F | 21% |
8 AM Smoky HazeUV: 0.5 |
67°F Feels 68°F |
72% | 3.4 SW | 29.92 | 57.7°F | 19% |
9 AM Overcast UV: 1.7 |
69°F Feels 69°F |
67% | 3.6 SW | 29.92 | 57.2°F | 17% |
10 AM OvercastUV: 3.8 |
71°F Feels 71°F |
59% | 4 SW | 29.92 | 56.6°F | 14% |
11 AM OvercastUV: 6.1 |
74°F Feels 73°F |
52% | 5.4 WSW | 29.92 | 55.3°F | 12% |
12 PM OvercastUV: 7.9 |
77°F Feels 75°F |
46% | 7.4 WSW | 29.91 | 54.5°F | 11% |
1 PM Cloudy UV: 8.5 |
78°F Feels 77°F |
42% | 6.9 WSW | 29.89 | 53.8°F | 8% |
2 PM OvercastUV: 7.5 |
80°F Feels 77°F |
39% | 8.5 WSW | 29.87 | 53.2°F | 10% |
3 PM CloudyUV: 5.5 |
81°F Feels 76°F |
38% | 9.4 WSW | 29.86 | 52.7°F | 7% |
4 PM OvercastUV: 3.1 |
80°F Feels 75°F |
39% | 9.8 SW | 29.86 | 52.5°F | 10% |
5 PM OvercastUV: 1.2 |
79°F Feels 74°F |
39% | 8.9 SW | 29.85 | 51.8°F | 10% |
6 PM Partly Cloudy UV: 0.3 |
76°F Feels 71°F |
43% | 10.5 SW | 29.86 | 52°F | 4% |
7 PM ClearUV: 0 |
72°F Feels 67°F |
51% | 10.1 SW | 29.89 | 53.1°F | 3% |
8 PM ClearUV: 0 |
70°F Feels 67°F |
57% | 8.1 SW | 29.9 | 54.1°F | 4% |
9 PM ClearUV: 0 |
69°F Feels 66°F |
61% | 6.7 SW | 29.92 | 54.4°F | 4% |
10 PM ClearUV: 0 |
68°F Feels 66°F |
63% | 5.6 SW | 29.92 | 54.6°F | 4% |
11 PM ClearUV: 0 |
67°F Feels 66°F |
65% | 4.9 SW | 29.91 | 54.8°F | 5% |
Mon, Sep 21st 2026
Partly cloudy expected later. Temps range from 64° to 66°. Light winds from the SW at 4.5 mph, with humidity ranging 67% to 77%, and an avg barometric pressure of 29.9 inHg.
| Mon, Sep 21st | Temp | Humidity | Wind (mph) | Pressure (inHg) | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 AM ClearUV: 0 |
66°F Feels 66°F |
67% | 4.3 SW | 29.91 | 55°F | 5% |
1 AM ClearUV: 0 |
66°F Feels 65°F |
69% | 4.5 SW | 29.9 | 55.3°F | 6% |
2 AM Partly CloudyUV: 0 |
65°F Feels 64°F |
73% | 5.1 SW | 29.89 | 55.9°F | 10% |
3 AM Partly CloudyUV: 0 |
64°F Feels 64°F |
75% | 4.5 SW | 29.89 | 56.3°F | 14% |
4 AM Partly CloudyUV: 0 |
64°F Feels 64°F |
77% | 4 SW | 29.89 | 56.6°F | 11% |
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