Hawaii (HI): Current UV Index and Hourly Forecast

As of 2:14 AM HST on April 23, 2026, all 158 cities in Hawaii in our database have a UV Index reading of 0, indicating no radiation from the sun.

Over the next 24 hours, the highest UV Index reading in Hawaii is expected to be 13.3 in Mountain View 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 as of 2:14 AM HST, April 23, 2026

Counties in Hawaii (HI)

Current UV Index in Major Cities in Hawaii (HI)

2:14 AM HST, April 23, 2026