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
10:10 AM HST

8.1Risk: Very High

(Updated 10 minutes ago.)

As of 10:10 AM HST, the UV Index in Honaunau-Napoopoo, HI is 8.1 (Very High).
The UV Index is expected to rise sharply to 11 (Extreme) between 11:00 AM - 12:00 PM HST today.

Hourly UV Index Forecast for Today
Saturday, April 26, 2025

3 AM6 AM9 AM12 PM3 PM6 PM9 PMHawaii-Aleutian Standard Time (HST)012345678910111213Current Time: 10:10 AM, HST

UV Index Data sourced from the NOAA.


As of 10:10 AM HST today in Honaunau-Napoopoo, HI, the UV Index is currently at a very high level of 8.1. However, as the day progresses, the UV index is expected to rise significantly.

The UV Index in Honaunau-Napoopoo will continue to rise, reaching an extreme level of 11 between 11:00 AM - 12:00 PM. The UV Index will peak between 12:00 PM and 1:00 PM with an extreme reading of 12.7.

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 very high 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 7:00 PM.


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

Today

Time RangeUV IndexRisk
3:00 AM - 9:00 AM (HST)0 - 1.9
Low
9:00 AM - 10:00 AM4.6
Moderate
10:00 AM - 11:00 AM8.1
Very High
11:00 AM - 2:00 PM11 - 12.7
Extreme
2:00 PM - 3:00 PM10.3
Very High
3:00 PM - 4:00 PM5.5
High
4:00 PM - 12:00 AM0 - 2.4
Low

Tomorrow

Time RangeUV IndexRisk
12:00 AM - 9:00 AM (HST)0 - 1.9
Low
9:00 AM - 10:00 AM4.3
Moderate
10:00 AM - 12:00 PM5.5 - 7.4
High
12:00 PM - 1:00 PM8.8
Very High
1:00 PM - 2:00 PM6.9
High
2:00 PM - 4:00 PM3.3 - 4.9
Moderate
4:00 PM - 12:00 AM0 - 1.3
Low

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

Download CSV (Excel) ↓
TimeUV IndexRisk
10:00 AM - 11:00 AM (Now, HST)8.1
Very High
11:00 AM - 12:00 PM 11
Extreme
12:00 PM - 1:00 PM 12.7
Extreme
1:00 PM - 2:00 PM 12.4
Extreme
2:00 PM - 3:00 PM 10.3
Very High
3:00 PM - 4:00 PM 5.5
High
4:00 PM - 5:00 PM 2.4
Low
5:00 PM - 6:00 PM 0.6
Low
6:00 PM - 7:00 PM 0.2
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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