UV index in San Jose today
On a clear day San Jose peaks near 1pm at about 10 — the very high band — then eases toward sunset. The dial currently shows that typical reference; a usable live response replaces it. Morning and late-afternoon reference windows are usually lower than the peak.
UV index in San Jose today
Before a usable live response loads, the dial above shows a labelled typical reference for San Jose (37.34°N, 121.89°W). On a typical clear day the index builds through the morning and peaks near 1pm at about 10 — the very high band — before easing off toward sunset at 20:27. When live hydration succeeds, the card replaces the reference with a current observation and forecast. Use the verified current value, not the temperature, to decide whether it is a tan window or a cover-up hour. South Bay sunshine is clearer than the coast on many days, so UV can run high even when nearby fog is visible.
See also: Best time to tan in San Jose.
Plan from this UV reading
Typical 3-day UV reference
Illustrative clear-sky pattern — not a live forecast. A usable response can replace it with the provider's 3-day forecast.
UV in nearby cities
Source & freshness
This page starts with labelled typical clear-sky values for San Jose. The card attempts a current UV and forecast request through TanPilot's proxy and replaces reference values only after a usable response; failed requests leave the reference label visible. Estimates only — not medical advice.
Questions
Is it safe to tan in San Jose at midday?
Around midday San Jose typically reaches UV 10 (very high), strong enough to burn unprotected skin quickly. It is better used as shade-first time. For a gentler session, aim for the lower-UV windows around 8:30–10:15 or 17:00–18:45, and use broad-spectrum SPF. These are estimates, not medical advice.
When is UV lowest in San Jose?
UV is lowest near sunrise (5:47) and sunset (20:27) and climbs to its peak around 1pm. The morning and late-afternoon tan windows — about 8:30–10:15 and 17:00–18:45 — are the lower-UV parts of daylight that are still warm enough to be useful for a careful tan.