8.8 (Very High)
Last Updated 21 minutes ago
The hourly La Mesa, CA UV Index forecast for Thursday, September 4th, 2025.
Last Updated 1 hour ago
The UV index forecast for the next five days in La Mesa, CA has no days reaching the extreme level and 4 days reaching the high or very high levels. The peak UV intensity in La Mesa over the next five days will be 9.8 on Sunday, September 7th at 1:00 pm.
The UV index forecast for Thursday, September 4th in La Mesa, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 1pm | 9.3 |
Very High |
| 2pm | 8.4 |
Very High |
| 3pm | 6.2 |
High |
| 4pm | 3.8 |
Moderate |
| 5pm | 1.6 |
Low |
| 6pm | 0.4 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Friday, September 5th in La Mesa, 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 | 0.1 |
Low |
| 8am | 0.8 |
Low |
| 9am | 2.3 |
Low |
| 10am | 4.6 |
Moderate |
| 11am | 7 |
High |
| 12pm | 8.9 |
Very High |
| 1pm | 9.4 |
Very High |
| 2pm | 8.4 |
Very High |
| 3pm | 6.2 |
High |
| 4pm | 3.7 |
Moderate |
| 5pm | 1.6 |
Low |
| 6pm | 0.4 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Saturday, September 6th in La Mesa, 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 | 0.1 |
Low |
| 8am | 0.7 |
Low |
| 9am | 2.2 |
Low |
| 10am | 4.4 |
Moderate |
| 11am | 6.9 |
High |
| 12pm | 8.8 |
Very High |
| 1pm | 9.3 |
Very High |
| 2pm | 8.4 |
Very High |
| 3pm | 6.4 |
High |
| 4pm | 3.8 |
Moderate |
| 5pm | 1.6 |
Low |
| 6pm | 0.4 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Sunday, September 7th in La Mesa, 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 | 0.8 |
Low |
| 9am | 2.4 |
Low |
| 10am | 4.8 |
Moderate |
| 11am | 7.3 |
High |
| 12pm | 9.2 |
Very High |
| 1pm | 9.8 |
Very High |
| 2pm | 8.7 |
Very High |
| 3pm | 6.4 |
High |
| 4pm | 3.9 |
Moderate |
| 5pm | 1.6 |
Low |
| 6pm | 0.4 |
Low |
| 7pm | 0 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Monday, September 8th in La Mesa, 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 |