Honaunau-Napoopoo, HI: Current UV Index and Hourly Forecast

On this page, you can find the current UV Index and hourly 5 day UV Index forecast for Honaunau-Napoopoo, Hawaii County, Hawaii (HI). The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated daily.

Current UV Index
1:26 PM HST

3.7Risk: Moderate

(Updated 26 minutes ago.)

As of 1:26 PM HST, the UV Index in Honaunau-Napoopoo, HI is 3.7 (Moderate).
The UV Index is expected to rise sharply to 5.3 (still Moderate) between 2:00 PM - 3:00 PM HST today.

Hourly UV Index Forecast for Today
Saturday, February 21, 2026

3 AM6 AM9 AM12 PM3 PM6 PM9 PMHawaii-Aleutian Standard Time (HST)0123456789101112Current Time: 1:26 PM, HST

UV Index Data sourced from the NOAA.


As of 1:26 PM HST today in Honaunau-Napoopoo, HI, the UV Index is currently at a moderate level of 3.7. As the day progresses, the UV index is expected to fall as the sun sets.

It will return to moderate levels at 2:00 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.


Summary of Hourly UV Index Forecast for Today and Tomorrow in Honaunau-Napoopoo, HI

Today

Time RangeUV IndexRisk
3:00 AM - 11:00 AM (HST)0 - 1
Low
11:00 AM - 4:00 PM3.2 - 5.4
Moderate
4:00 PM - 12:00 AM0 - 2
Low

Tomorrow

Time RangeUV IndexRisk
12:00 AM - 9:00 AM (HST)0 - 1
Low
9:00 AM - 10:00 AM3.2
Moderate
10:00 AM - 11:00 AM6.2
High
11:00 AM - 12:00 PM9.1
Very High
12:00 PM - 2:00 PM10.6 - 10.8
Extreme
2:00 PM - 3:00 PM8.7
Very High
3:00 PM - 4:00 PM5.6
High
4:00 PM - 5:00 PM2.6
Moderate
5:00 PM - 12:00 AM0 - 0.7
Low

Detailed Hourly Honaunau-Napoopoo UV Index Forecast for the next 5 days

Download CSV (Excel) ↓
TimeUV IndexRisk
1:00 PM - 2:00 PM (Now, HST)3.7
Moderate
2:00 PM - 3:00 PM 5.3
Moderate
3:00 PM - 4:00 PM 3.2
Moderate
4:00 PM - 5:00 PM 2
Low
5:00 PM - 6:00 PM 0.5
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

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