4.1
Moderate · clear-sky maximum
Wednesday, October 21, 2026
At solar noon (12:54:58 PM) the sun reaches 41.1° above the horizon in Lucas Valley-Marinwood. Without clouds, that corresponds to a maximum UV index of about 4.1 (moderate). Clouds usually lower the real value; snow, sand, water and altitude can raise it.
☀️ Sun Safety: When the UV index is high, protect yourself with sunscreen, shade, and a hat. Values of 6 or more indicate increased sunburn risk!
UV index in Lucas Valley-Marinwood, next 14 days
| Date | Sun at noon | Clear-sky max | Forecast max |
|---|---|---|---|
| 41.1° | 4.1 Moderate | — | |
| 40.7° | 4.0 Moderate | — | |
| 40.4° | 4.0 Moderate | — | |
| 40.0° | 3.9 Moderate | — | |
| 39.7° | 3.8 Moderate | — | |
| 39.3° | 3.8 Moderate | — | |
| 39.0° | 3.7 Moderate | — | |
| 38.7° | 3.6 Moderate | — | |
| 38.3° | 3.6 Moderate | — | |
| 38.0° | 3.5 Moderate | — | |
| 37.7° | 3.4 Moderate | — | |
| 37.4° | 3.4 Moderate | — | |
| 37.0° | 3.3 Moderate | — | |
| 36.7° | 3.3 Moderate | — |
Clear-sky values are calculated from the sun's height at solar noon (cloud-free sky, average ozone). Forecast values from Open-Meteo include clouds and load in your browser.
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The UV index in Lucas Valley-Marinwood measures the intensity of ultraviolet radiation reaching the ground.
Values below 3 are considered low risk, while 6 and above require sun protection such as sunscreen, sunglasses, and shade.
The clear-sky value shows how strong the sun can get on each day; the forecast shows what is expected with clouds.
See today's sunrise and sunset times for Lucas Valley-Marinwood
or discover the best light for photos during the golden hour in Lucas Valley-Marinwood.
About Lucas Valley-Marinwood
AI-assisted description based on geographic data and editorial notes.