On this page, you can find the current UV Index and hourly 5 day UV Index forecast for Kahaluu-Keauhou, Hawaii County, Hawaii (HI). The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated daily.
(Updated 41 minutes ago.)
As of 8:41 PM
HST, the UV Index in Kahaluu-Keauhou, HI is 0 (Low).
The UV Index is expected to rise to 0.5 between 7:00 AM - 8:00 AM
HST
tomorrow.
UV Index Data sourced from the NOAA.
As of 8:41 PM HST on Tuesday, July 22, 2025, the UV index in Kahaluu-Keauhou, HI is at a low level of 0. At this time of the night, the sun has already set and there is no exposure to UV radiation. The UV Index will remain at 0 through the early morning hours until around 7:00 AM tomorrow.
As the day progresses tomorrow (July 23, 2025), the UV Index will rise to 0.5 between 7:00 AM - 8:00 AM, still considered low. The UV Index in Kahaluu-Keauhou will continue to rise through the morning, reaching a high level of 7.3 between 10:00 AM - 11:00 AM and an extreme level of 13 between 12:00 PM - 1:00 PM. The UV Index will peak between 12:00 PM and 1:00 PM with an extreme reading of 13.
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 high levels at 3:00 PM and then drop to low levels again from 5:00 PM onwards. As the day transitions into the night, the UV Index will drop back down to 0 at 7:00 PM.
| Time Range | UV Index | Risk |
|---|---|---|
| 3:00 AM - 9:00 AM (HST) | 0 - 1.3 | Low |
| 9:00 AM - 10:00 AM | 3.5 | Moderate |
| 10:00 AM - 11:00 AM | 7 | High |
| 11:00 AM - 3:00 PM | 8.8 - 10.1 | Very High |
| 3:00 PM - 4:00 PM | 6.3 | High |
| 4:00 PM - 5:00 PM | 3 | Moderate |
| 5:00 PM - 12:00 AM | 0 - 1.4 | Low |
| Time Range | UV Index | Risk |
|---|---|---|
| 12:00 AM - 9:00 AM (HST) | 0 - 1.9 | Low |
| 9:00 AM - 10:00 AM | 4.6 | Moderate |
| 10:00 AM - 11:00 AM | 7.3 | High |
| 11:00 AM - 12:00 PM | 9.7 | Very High |
| 12:00 PM - 2:00 PM | 12.6 - 13 | Extreme |
| 2:00 PM - 3:00 PM | 9 | Very High |
| 3:00 PM - 4:00 PM | 5.6 | High |
| 4:00 PM - 5:00 PM | 2.9 | Moderate |
| 5:00 PM - 12:00 AM | 0 - 1.2 | Low |
| Time | UV Index | Risk |
|---|---|---|
| 8:00 PM - 9:00 PM (Now, HST) | 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 |