Humboldt County, CA: Current UV Index and Hourly Forecast

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As of 3:56 PM PDT on September 28, 2026, all 40 cities in Humboldt County, CA in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Alderpoint, CA with a reading of 4.4.

Over the next 24 hours, the highest UV Index reading in Humboldt County, CA is expected to be 6 in Alderpoint between 1:00 PM - 2:00 PM PDT tomorrow.

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Current UV Index in Cities in Humboldt County, CA

• Alderpoint - 4.4
• Arcata - 4
• Bayview - 4
• Benbow - 4.3
• Big Lagoon - 4
• Blue Lake - 3.8
• Cutten - 4
• Eureka - 4
• Fairhaven - 4
• Ferndale - 4.2
• Fieldbrook - 3.8
• Fields Landing - 4
• Fortuna - 4.2
• Garberville - 4.3
• Hoopa - 3.9
• Humboldt Hill - 4
• Hydesville - 4.2
• Indianola - 4
• Kep'el - 3.9
• Loleta - 4
• Manila - 4
• McKinleyville - 3.8
• Miranda - 4.2
• Myers Flat - 4.2
• Myrtletown - 4
• Orick - 3.7
• Phillipsville - 4.2
• Pine Hills - 4
• Redcrest - 4.2
• Redway - 4.3
• Rio Dell - 4.2
• Samoa - 4
• Scotia - 4.2
• Shelter Cove - 4.3
• Trinidad - 4
• Wautec - 3.9
• Weitchpec - 3.9
• Weott - 4.3
• Westhaven-Moonstone - 3.8
• Willow Creek - 3.9