San Mateo County, CA: Current UV Index and Hourly Forecast

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As of 10:38 AM PST on January 25, 2025, all 33 cities in San Mateo County, CA in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Daly City, CA with a reading of 1.2.

Over the next 24 hours, the highest UV Index reading in San Mateo County, CA is expected to be 1.9 in Pacifica between 12:00 PM - 1:00 PM PST today.

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Current UV Index in Cities in San Mateo County, CA

• Atherton - 0.3
• Baywood Park - 0.3
• Belmont - 0.3
• Brisbane - 1.2
• Broadmoor - 1.2
• Burlingame - 0.3
• Colma - 1.2
• Daly City - 1.2
• East Palo Alto - 0.3
• El Granada - 0.9
• Emerald Lake Hills - 0.3
• Foster City - 0.3
• Half Moon Bay - 0.9
• Highlands - 0.3
• Hillsborough - 0.3
• La Honda - 0.4
• Ladera - 0.3
• Loma Mar - 0.4
• Menlo Park - 0.3
• Millbrae - 0.9
• Montara - 0.9
• Moss Beach - 0.9
• North Fair Oaks - 0.3
• Pacifica - 0.9
• Pescadero - 0.4
• Portola Valley - 0.4
• Redwood City - 0.3
• San Bruno - 1.2
• San Carlos - 0.3
• San Mateo - 0.3
• South San Francisco - 1.2
• West Menlo Park - 0.3
• Woodside - 0.3