Today's UV outlook for San Francisco
Today's forecast for San Francisco peaks at UV 7.0 around 14:00. The hourly outlook shows 8 hours at moderate or above (UV 3+), 4 hours at high or above (UV 6+). The live reading is UV 5.3 right now.
Peak UV reaches the high band today. Plan longer outdoor sessions earlier or later if you can, and use the calculator below to see how long unprotected skin may last at the current reading.
Compare with other cities in California, or read practical planning notes in the blog .