San Luis Obispo County, CA: Current UV Index and Hourly Forecast

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As of 3:44 PM PDT on September 15, 2025, out of 29 cities in San Luis Obispo County, CA in our database, 20 cities (69%) have a UV Index reading of High, while 9 cities (31%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Santa Margarita, CA with a reading of 5.8.

Over the next 24 hours, the highest UV Index reading in San Luis Obispo County, CA is expected to be 8 in Nipomo between 1:00 PM - 2:00 PM PDT tomorrow.

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Current UV Index in Cities in San Luis Obispo County, CA

• Arroyo Grande - 5.5
• Atascadero - 5.7
• Avila Beach - 5.3
• Blacklake - 5.5
• California Polytechnic State University - 5.3
• Callender - 5.5
• Cambria - 5.4
• Cayucos - 5.4
• Creston - 5.8
• Edna - 5.8
• El Paso de Robles - 5.7
• Garden Farms - 5.8
• Grover Beach - 5.5
• Lake Nacimiento - 5.7
• Los Berros - 5.5
• Los Osos - 5.3
• Los Ranchos - 5.3
• Morro Bay - 5.3
• Nipomo - 5.5
• Oak Shores - 5.8
• Oceano - 5.5
• Pismo Beach - 5.3
• San Luis Obispo - 5.3
• San Simeon - 5.5
• Santa Margarita - 5.8
• Shandon - 5.7
• Templeton - 5.7
• Whitley Gardens - 5.7
• Woodlands - 5.5