8.7 (Very High)
Last Updated 21 minutes ago
The hourly Johannesburg, CA UV Index forecast for Wednesday, July 16th, 2025.
Last Updated 21 minutes ago
The UV index forecast for the next five days in Johannesburg, CA has 4 days reaching the extreme level and no days reaching the high or very high levels. The peak UV intensity in Johannesburg over the next five days will be 11.5 on Thursday, July 17th at 1:00 pm.
The UV index forecast for Wednesday, July 16th in Johannesburg, CA is below.
| Time | UV Index | Risk |
|---|---|---|
| 12pm | 10.6 |
Very High |
| 1pm | 11.2 |
Extreme |
| 2pm | 10.2 |
Very High |
| 3pm | 8 |
Very High |
| 4pm | 5.3 |
Moderate |
| 5pm | 2.8 |
Low |
| 6pm | 1.1 |
Low |
| 7pm | 0.3 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Thursday, July 17th in Johannesburg, 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 | 0.4 |
Low |
| 8am | 1.5 |
Low |
| 9am | 3.6 |
Moderate |
| 10am | 6.3 |
High |
| 11am | 9 |
Very High |
| 12pm | 10.9 |
Very High |
| 1pm | 11.5 |
Extreme |
| 2pm | 10.6 |
Very High |
| 3pm | 8.4 |
Very High |
| 4pm | 5.5 |
Moderate |
| 5pm | 2.9 |
Low |
| 6pm | 1.2 |
Low |
| 7pm | 0.3 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Friday, July 18th in Johannesburg, 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 | 0.4 |
Low |
| 8am | 1.4 |
Low |
| 9am | 3.4 |
Moderate |
| 10am | 6 |
High |
| 11am | 8.6 |
Very High |
| 12pm | 10.4 |
Very High |
| 1pm | 11 |
Extreme |
| 2pm | 10 |
Very High |
| 3pm | 7.8 |
High |
| 4pm | 5.2 |
Moderate |
| 5pm | 2.8 |
Low |
| 6pm | 1.1 |
Low |
| 7pm | 0.2 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Saturday, July 19th in Johannesburg, 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 | 0.4 |
Low |
| 8am | 1.5 |
Low |
| 9am | 3.5 |
Moderate |
| 10am | 6.2 |
High |
| 11am | 8.8 |
Very High |
| 12pm | 10.8 |
Very High |
| 1pm | 11.4 |
Extreme |
| 2pm | 10.4 |
Very High |
| 3pm | 8.2 |
Very High |
| 4pm | 5.4 |
Moderate |
| 5pm | 2.8 |
Low |
| 6pm | 1.1 |
Low |
| 7pm | 0.2 |
Low |
| 8pm | 0 |
Low |
| 9pm | 0 |
Low |
| 10pm | 0 |
Low |
| 11pm | 0 |
Low |
The UV index forecast for Sunday, July 20th in Johannesburg, 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 |