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

As of 3:07 AM PDT on April 28, 2025, all 1 cities in San Francisco 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 San Francisco County, CA is expected to be 7.9 in San Francisco between 1:00 PM - 2:00 PM PDT today.

Search Cities in San Francisco County, CA

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in San Francisco County, CA as of 3:07 AM PDT, April 28, 2025

Current UV Index in Cities in San Francisco County, CA

3:07 AM PDT, April 28, 2025