UV Index Today in Hawaii County, Hawaii (HI)

Sunday, September 20, 2026 -6:22 AM HST (GMT-10)

The average maximum UV Index today across 44 locations in Hawaii County, Hawaii (HI), is 11.6. The highest projected maximum is 13.2 in Honaunau-Napoopoo at 12:00 PM HST, while the lowest projected maximum is 10.8 in Hawaiian Paradise Park at 12:00 PM HST.

Tomorrow, the average maximum UV Index across those same locations is expected to be 12. The highest projected maximum is 13.2 in Honaunau-Napoopoo at 12:00 PM HST, and the lowest projected maximum is 11.4 in Kapaau at 12:00 PM HST.

44 Places in Hawaii County, Hawaii (HI)

Maximum UV Index Today