Marin County, CA: Current UV Index and Hourly Forecast

As of 1:42 PM PDT on March 20, 2025, all 31 cities in Marin County, CA in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Lagunitas-Forest Knolls, CA with a reading of 4.3.

Over the next 24 hours, the highest UV Index reading in Marin County, CA is expected to be 4.8 in Dillon Beach between 2:00 PM - 3:00 PM PDT today.

Search Cities in Marin County, CA

UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Marin County, CA as of 1:42 PM PDT, March 20, 2025

Current UV Index in Cities in Marin County, CA

1:42 PM PDT, March 20, 2025