UV Index in San Francisco, US

Today's UV index in San Francisco, United States will be up to 5, indicating moderate risk of harm from the sun's UV rays for the average person.

Our tips for today

A UV index reading of 3 to 5 indicates a moderate risk of harm from unprotected sun exposure.

The UV index in San Francisco will be up to 5 today, so it's best to stay in the shade during midday when the sun is strongest.

If you need to be outdoors, wear sun protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.

It's important to generously apply broad-spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days and after swimming or sweating.

Keep in mind that bright surfaces like sand, water, and snow can increase UV exposure, so take extra care in these environments.

Disclaimer

* This page's content about the UV index in San Francisco (United States) is for educational and informational purposes only. The developers and data providers are not liable for the accuracy, reliability, or availability of the information. The information is not a substitute for professional medical advice, and the developers and data providers are not medical professionals. Seek advice from a qualified health provider for any medical concerns, and do not disregard medical advice or delay seeking it based on the information provided on this site.