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.
Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
---|---|---|---|---|---|
Color | |||||
Risk | Low | Moderate | High | Very High | Extreme |