Siskiyou County, CA: Current UV Index and Hourly Forecast

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As of 11:03 AM PDT on August 24, 2026, out of 21 cities in Siskiyou County, CA in our database, 17 cities (81%) have a UV Index reading of Moderate, while 4 cities (19%) have a UV Index reading of High. The city with the highest UV Index reading right now is Tulelake, CA with a reading of 5.7.

Over the next 24 hours, the highest UV Index reading in Siskiyou County, CA is expected to be 7.9 in Etna between 1:00 PM - 2:00 PM PDT today.

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Current UV Index in Cities in Siskiyou County, CA

• Carrick - 5
• Dorris - 5.6
• Dunsmuir - 4.7
• Edgewood - 4.9
• Etna - 5.5
• Fort Jones - 5.2
• Gazelle - 4.9
• Greenview - 5.5
• Grenada - 4.8
• Happy Camp - 5.3
• Hornbrook - 4.9
• Lake Shastina - 4.9
• Macdoel - 5.4
• McCloud - 4.7
• Montague - 4.8
• Mount Hebron - 5.4
• Mount Shasta - 4.7
• Tennant - 5
• Tulelake - 5.7
• Weed - 4.9
• Yreka - 5