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 shows the live reading; morning and late-afternoon windows stay gentler for a careful tan.
UV index in Boston today
The dial above shows Boston's live UV (42.36°N, 71.06°W) via TanPilot's UV proxy. 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. Use the 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.
7-day UV outlook
Typical clear-sky pattern — the app refreshes this from your live forecast.
UV in nearby cities
Source & freshness
Live UV via TanPilot's UV proxy, refreshed regularly; the timeline and hourly curve start from typical clear-sky values for Boston and update with the live reading. 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.