On this page, you can find the current UV Index and hourly 5 day UV Index forecast for San Juan, San Juan Municipio, Puerto Rico (PR). The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated daily.
(Updated 23 minutes ago.)
As of 2:23 AM AST, the UV Index in San Juan, PR is 0 (Low).
The UV Index is expected to rise to 0.5 between 8:00 AM - 9:00 AM AST today.
UV Index Data sourced from the NOAA.
As of 2:23 AM AST today in San Juan, PR, the UV Index is currently at 0 which means there is no significant ultraviolet radiation from the sun. However, as the day progresses, the UV index is expected to rise significantly.
The UV Index will rise to 0.5 between 8:00 AM - 9:00 AM, still considered low. The UV Index in San Juan will continue to rise through the morning, reaching a moderate level of 3.4 between 10:00 AM - 11:00 AM and a high level of 5.5 between 11:00 AM - 12:00 PM. The UV Index will peak between 1:00 PM and 2:00 PM with a high reading of 7.1.
For the protection of your health against UV exposure, we highly recommended wearing sunglasses, generously applying broad-spectrum SPF 15+ strength sunscreen on exposed skin, covering the body with sun-protective clothing and a wide-brim hat, and reducing the time spent outdoors in the sun during peak hours.
After reaching its peak for the day, the UV Index will gradually decline through the afternoon and evening. It will return to moderate levels at 3:00 PM and then drop to low levels again from 4:00 PM onwards. As the day transitions into the night, the UV Index will drop back down to 0 at 6:00 PM.
| Time Range | UV Index | Risk |
|---|---|---|
| 12:00 AM - 10:00 AM (AST) | 0 - 1.5 | Low |
| 10:00 AM - 11:00 AM | 3.4 | Moderate |
| 11:00 AM - 3:00 PM | 5.5 - 7.1 | High |
| 3:00 PM - 4:00 PM | 3.5 | Moderate |
| 4:00 PM - 12:00 AM | 0 - 1.5 | Low |
| Time Range | UV Index | Risk |
|---|---|---|
| 12:00 AM - 10:00 AM (AST) | 0 - 2 | Low |
| 10:00 AM - 11:00 AM | 4.1 | Moderate |
| 11:00 AM - 12:00 PM | 6.2 | High |
| 12:00 PM - 1:00 PM | 7.5 | Very High |
| 1:00 PM - 3:00 PM | 5.8 - 7.4 | High |
| 3:00 PM - 4:00 PM | 3.6 | Moderate |
| 4:00 PM - 12:00 AM | 0 - 1.6 | Low |
| Time | UV Index | Risk |
|---|---|---|
| 2:00 AM - 3:00 AM (Now, AST) | 0 | Low |
| 3:00 AM - 4:00 AM | 0 | Low |
| 4:00 AM - 5:00 AM | 0 | Low |
| 5:00 AM - 6:00 AM | 0 | Low |
| 6:00 AM - 7:00 AM | 0 | Low |
| 7:00 AM - 8:00 AM | 0 | Low |
| 8:00 AM - 9:00 AM | 0.5 | Low |
| 9:00 AM - 10:00 AM | 1.5 | Low |
| 10:00 AM - 11:00 AM | 3.4 | Moderate |
| 11:00 AM - 12:00 PM | 5.5 | High |
| 12:00 PM - 1:00 PM | 6.8 | High |
| 1:00 PM - 2:00 PM | 7.1 | High |
| 2:00 PM - 3:00 PM | 5.6 | High |
| 3:00 PM - 4:00 PM | 3.5 | Moderate |
| 4:00 PM - 5:00 PM | 1.5 | Low |
| 5:00 PM - 6:00 PM | 0.4 | Low |
| 6:00 PM - 7:00 PM | 0 | Low |
| 7:00 PM - 8:00 PM | 0 | Low |
| 8:00 PM - 9:00 PM | 0 | Low |
| 9:00 PM - 10:00 PM | 0 | Low |
| 10:00 PM - 11:00 PM | 0 | Low |
| 11:00 PM - 12:00 AM | 0 | Low |