Seattle UV Index and Hourly Forecast
47.61°N, 122.33°W · Typical reference until a usable live update loads
7
High
typical
Typical
On a clear day Seattle peaks near 1pm at about 7 — the 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.
☀ Tan window 8:30–10:30 ☀ Tan window 18:00–20:00 Peak 1pm
typical clear-sky
Typical day · sunrise → sunset
5:15Solar noon21:05
Hourly UV · typical
8a
0
9a
0
10a
2
11a
4
12p
6
1p
7
2p
6
3p
4
4p
2
5p
0
UV index in Seattle today
Before a usable live response loads, the dial above shows a labelled typical reference for Seattle (47.61°N, 122.33°W). On a typical clear day the index builds through the morning and peaks near 1pm at about 7 — the high band — before easing off toward sunset at 21:05. 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. High latitude keeps winter UV low, but long June days still push the summer index to high around midday.
See also: Best time to tan in Seattle.
What makes Seattle UV different
Plan from this UV reading
More city UV guides
Typical 3-day UV reference
Day 1
7
Day 2
6
Day 3
4
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 Seattle. 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 Seattle at midday?
Around midday Seattle typically reaches UV 7 (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 18:00–20:00, and use broad-spectrum SPF. These are estimates, not medical advice.
When is UV lowest in Seattle?
UV is lowest near sunrise (5:15) and sunset (21:05) and climbs to its peak around 1pm. The morning and late-afternoon tan windows — about 8:30–10:30 and 18:00–20:00 — are the lower-UV parts of daylight that are still warm enough to be useful for a careful tan.