Kauai County, HI: Current UV Index and Hourly Forecast

As of 1:31 PM HST on September 18, 2025, all 23 cities in Kauai County, HI in our database have a UV Index reading of Extreme. The city with the highest UV Index reading right now is Wailua Homesteads, HI with a reading of 11.5.

Over the next 24 hours, the highest UV Index reading in Kauai County, HI is expected to be 11.5 in Wailua Homesteads between 1:00 PM - 2:00 PM HST today.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Kauai County, HI as of 1:31 PM HST, September 18, 2025

Current UV Index in Cities in Kauai County, HI

1:31 PM HST, September 18, 2025