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Max UV Today
9.9 Very high

Very high risk of harm from unprotected Sun exposure. Alert in effect for 8 hours between 10am–6pm.

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Portola Valley UV Index

United States
CA
San Mateo County
Portola Valley

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UV Forecast NOAA

Portola Valley UV forecast issued today at 12:17 pm. Next forecast at approx. 12:17 pm.

UV Index

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Weather information based on data supplied by NOAA
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