2.7 (Low)
Last Updated 53 minutes ago
The hourly Rancho Cucamonga, CA UV Index forecast for Saturday, December 13th, 2025.
Last Updated 1 hour ago
The UV index forecast for the next five days in Rancho Cucamonga, CA has no days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Rancho Cucamonga over the next five days will be 3.3 on Tuesday, December 16th at 12:00 pm.
The UV index forecast for Saturday, December 13th in Rancho Cucamonga, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 12pm | 3 |
Moderate |
| 1pm | 2.5 |
Low |
| 2pm | 1.6 |
Low |
| 3pm | 0.8 |
Low |
| 4pm | 0.2 |
Low |
| 5pm | 0 |
Low |
| 6pm | 0 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Sunday, December 14th in Rancho Cucamonga, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |
| 5am | 0 |
Low |
| 6am | 0 |
Low |
| 7am | 0 |
Low |
| 8am | 0.2 |
Low |
| 9am | 0.8 |
Low |
| 10am | 1.9 |
Low |
| 11am | 2.5 |
Low |
| 12pm | 2.8 |
Low |
| 1pm | 2.3 |
Low |
| 2pm | 1.6 |
Low |
| 3pm | 0.8 |
Low |
| 4pm | 0.2 |
Low |
| 5pm | 0 |
Low |
| 6pm | 0 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Monday, December 15th in Rancho Cucamonga, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |
| 5am | 0 |
Low |
| 6am | 0 |
Low |
| 7am | 0 |
Low |
| 8am | 0.3 |
Low |
| 9am | 1 |
Low |
| 10am | 2 |
Low |
| 11am | 2.9 |
Low |
| 12pm | 3.1 |
Moderate |
| 1pm | 2.7 |
Low |
| 2pm | 1.8 |
Low |
| 3pm | 0.8 |
Low |
| 4pm | 0.2 |
Low |
| 5pm | 0 |
Low |
| 6pm | 0 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Tuesday, December 16th in Rancho Cucamonga, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |
| 5am | 0 |
Low |
| 6am | 0 |
Low |
| 7am | 0 |
Low |
| 8am | 0.4 |
Low |
| 9am | 1.1 |
Low |
| 10am | 2.1 |
Low |
| 11am | 3 |
Moderate |
| 12pm | 3.3 |
Moderate |
| 1pm | 2.8 |
Low |
| 2pm | 1.8 |
Low |
| 3pm | 0.9 |
Low |
| 4pm | 0.2 |
Low |
| 5pm | 0 |
Low |
| 6pm | 0 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Wednesday, December 17th in Rancho Cucamonga, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 12am | 0 |
Low |
| 1am | 0 |
Low |
| 2am | 0 |
Low |
| 3am | 0 |
Low |
| 4am | 0 |
Low |