Siskiyou County, CA: Current UV Index and Hourly Forecast

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As of 12:44 AM PDT on September 19, 2025, all 21 cities in Siskiyou County, CA 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 Siskiyou County, CA is expected to be 6.3 in Hornbrook between 1:00 PM - 2:00 PM PDT today.

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Current UV Index in Cities in Siskiyou County, CA

• Carrick - 0
• Dorris - 0
• Dunsmuir - 0
• Edgewood - 0
• Etna - 0
• Fort Jones - 0
• Gazelle - 0
• Greenview - 0
• Grenada - 0
• Happy Camp - 0
• Hornbrook - 0
• Lake Shastina - 0
• Macdoel - 0
• McCloud - 0
• Montague - 0
• Mount Hebron - 0
• Mount Shasta - 0
• Tennant - 0
• Tulelake - 0
• Weed - 0
• Yreka - 0