On this page, you can find the current UV Index and hourly 5 day UV Index forecast for Tamalpais-Homestead Valley, Marin County, California (CA). The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated daily.
(Updated 57 minutes ago.)
As of 9:57 AM
PDT, the UV Index in Tamalpais-Homestead Valley, CA is 1.5 (Low).
The UV Index is expected to rise
sharply
to 3.2 (Moderate) between 10:00 AM - 11:00 AM
PDT today.
UV Index Data sourced from the NOAA.
As of 9:57 AM PDT today in Tamalpais-Homestead Valley, CA, the UV Index is currently at a low level of 1.5. However, as the day progresses, the UV index is expected to rise significantly.
The UV Index in Tamalpais-Homestead Valley will continue to rise, reaching a high level of 7.1 between 12:00 PM - 1:00 PM and a very high level of 8 between 1:00 PM - 2:00 PM. The UV Index will peak between 1:00 PM and 2:00 PM with a very high reading of 8.
For the protection of your health against UV exposure, we highly recommended wearing sunglasses, generously applying broad-spectrum SPF 15+ strength sunscreen on exposed skin, covering the body with sun-protective clothing and a wide-brim hat, and reducing the time spent outdoors in the sun during peak hours.
After reaching its peak for the day, the UV Index will gradually decline through the afternoon and evening. It will return to high levels at 3:00 PM and then drop to low levels again from 5:00 PM onwards. As the day transitions into the night, the UV Index will drop back down to 0 at 8:00 PM.
| Time Range | UV Index | Risk |
|---|---|---|
| 12:00 AM - 10:00 AM (PDT) | 0 - 1.5 | Low |
| 10:00 AM - 12:00 PM | 3.2 - 5.2 | Moderate |
| 12:00 PM - 1:00 PM | 7.1 | High |
| 1:00 PM - 3:00 PM | 7.6 - 8 | Very High |
| 3:00 PM - 4:00 PM | 6.2 | High |
| 4:00 PM - 5:00 PM | 4.1 | Moderate |
| 5:00 PM - 12:00 AM | 0 - 2.1 | Low |
| Time Range | UV Index | Risk |
|---|---|---|
| 12:00 AM - 10:00 AM (PDT) | 0 - 1.5 | Low |
| 10:00 AM - 12:00 PM | 3.3 - 5.4 | Moderate |
| 12:00 PM - 1:00 PM | 7.2 | High |
| 1:00 PM - 3:00 PM | 7.6 - 8 | Very High |
| 3:00 PM - 4:00 PM | 6.1 | High |
| 4:00 PM - 5:00 PM | 4 | Moderate |
| 5:00 PM - 12:00 AM | 0 - 2 | Low |
| Time | UV Index | Risk |
|---|---|---|
| 9:00 AM - 10:00 AM (Now, PDT) | 1.5 | Low |
| 10:00 AM - 11:00 AM | 3.2 | Moderate |
| 11:00 AM - 12:00 PM | 5.2 | Moderate |
| 12:00 PM - 1:00 PM | 7.1 | High |
| 1:00 PM - 2:00 PM | 8 | Very High |
| 2:00 PM - 3:00 PM | 7.6 | Very High |
| 3:00 PM - 4:00 PM | 6.2 | High |
| 4:00 PM - 5:00 PM | 4.1 | Moderate |
| 5:00 PM - 6:00 PM | 2.1 | Low |
| 6:00 PM - 7:00 PM | 0.8 | Low |
| 7:00 PM - 8:00 PM | 0.2 | 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 |