UV index in Boston today
On a clear day Boston peaks near 12:50pm at about 8 — 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 Boston today
Before a usable live response loads, the dial above shows a labelled typical reference for Boston (42.36°N, 71.06°W). On a typical clear day the index builds through the morning and peaks near 12:50pm at about 8 — the very high band — before easing off toward sunset at 20:24. 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. Coastal New England summers reach high UV by midday; the sea breeze cools the air without lowering the index.
See also: Best time to tan in Boston.
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 Boston. 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 Boston at midday?
Around midday Boston typically reaches UV 8 (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 8:30–10:30 or 17:30–19:30, and use broad-spectrum SPF. These are estimates, not medical advice.
When is UV lowest in Boston?
UV is lowest near sunrise (5:08) and sunset (20:24) and climbs to its peak around 12:50pm. The morning and late-afternoon tan windows — about 8:30–10:30 and 17:30–19:30 — are the lower-UV parts of daylight that are still warm enough to be useful for a careful tan.