Lucas Valley-Marinwood, CA: Current UV Index and Hourly Forecast

On this page, you can find the current UV Index and hourly 5 day UV Index forecast for Lucas Valley-Marinwood, Marin County, California (CA). The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated daily.

Current UV Index
1:03 PM PST

3.9Risk: Moderate

(Updated 3 minutes ago.)

As of 1:03 PM PST, the UV Index in Lucas Valley-Marinwood, CA is 3.9 (Moderate).
The UV Index is expected to fall to 2.9 (still Moderate) between 2:00 PM - 3:00 PM PST today.

Hourly UV Index Forecast for Today
Monday, March 2, 2026

5 AM8 AM11 AM2 PM5 PM8 PM11 PMPacific Standard Time (PST)0123456789101112Current Time: 1:03 PM, PST

UV Index Data sourced from the NOAA.


As of 1:03 PM PST today in Lucas Valley-Marinwood, CA, the UV Index is currently at a moderate level of 3.9. As the day progresses, the UV index is expected to fall as the sun sets.

It will return to moderate levels at 2:00 PM and then drop to low levels again from 3:00 PM onwards. As the day transitions into the night, the UV Index will drop back down to 0 at 6:00 PM.


Summary of Hourly UV Index Forecast for Today and Tomorrow in Lucas Valley-Marinwood, CA

Today

Time RangeUV IndexRisk
5:00 AM - 11:00 AM (PST)0 - 1
Low
11:00 AM - 3:00 PM2.9 - 4.5
Moderate
3:00 PM - 12:00 AM0 - 2.2
Low

Tomorrow

Time RangeUV IndexRisk
12:00 AM - 10:00 AM (PST)0 - 1.9
Low
10:00 AM - 12:00 PM3.4 - 4.9
Moderate
12:00 PM - 1:00 PM5.5
High
1:00 PM - 3:00 PM4 - 5.2
Moderate
3:00 PM - 12:00 AM0 - 2.4
Low

Detailed Hourly Lucas Valley-Marinwood UV Index Forecast for the next 5 days

Download CSV (Excel) ↓
TimeUV IndexRisk
1:00 PM - 2:00 PM (Now, PST)3.9
Moderate
2:00 PM - 3:00 PM 2.9
Moderate
3:00 PM - 4:00 PM 2.2
Low
4:00 PM - 5:00 PM 1
Low
5:00 PM - 6:00 PM 0.2
Low
6:00 PM - 7:00 PM 0
Low
7:00 PM - 8:00 PM 0
Low
8:00 PM - 9:00 PM 0
Low
9:00 PM - 10:00 PM 0
Low
10:00 PM - 11:00 PM 0
Low
11:00 PM - 12:00 AM 0
Low

Current UV Index in Nearby Cities