Stanislaus County, CA: Current UV Index and Hourly Forecast

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As of 12:27 PM PDT on March 21, 2026, out of 33 cities in Stanislaus County, CA in our database, 28 cities (85%) have a UV Index reading of High, while 5 cities (15%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Patterson, CA with a reading of 5.8.

Over the next 24 hours, the highest UV Index reading in Stanislaus County, CA is expected to be 6.4 in Patterson between 1:00 PM - 2:00 PM PDT today.

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Current UV Index in Cities in Stanislaus County, CA

• Airport - 5.7
• Bret Harte - 5.6
• Bystrom - 5.6
• Ceres - 5.6
• Cowan - 5.6
• Crows Landing - 5.6
• Del Rio - 5.7
• Denair - 5.4
• Diablo Grande - 5.8
• East Oakdale - 5.8
• Empire - 5.7
• Grayson - 5.8
• Hickman - 5.4
• Hughson - 5.4
• Keyes - 5.6
• Knights Ferry - 5.8
• La Grange - 5.7
• Modesto - 5.7
• Monterey Park Tract - 5.6
• Newman - 5.4
• Oakdale - 5.8
• Orange Blossom - 5.8
• Parklawn - 5.6
• Patterson - 5.8
• Riverbank - 5.7
• Riverdale Park - 5.6
• Rouse - 5.6
• Salida - 5.7
• Turlock - 5.4
• Valley Home - 5.7
• Waterford - 5.8
• West Modesto - 5.6
• Westley - 5.8