Hawaii County, HI: Current UV Index and Hourly Forecast

As of 11:09 AM HST on October 8, 2025, all 52 cities in Hawaii County, HI in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Honaunau-Napoopoo, HI with a reading of 10.

Over the next 24 hours, the highest UV Index reading in Hawaii County, HI is expected to be 11.1 in Honaunau-Napoopoo between 12:00 PM - 1:00 PM HST today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Hawaii County, HI as of 11:09 AM HST, October 8, 2025

Current UV Index in Cities in Hawaii County, HI

11:09 AM HST, October 8, 2025