Minimal danger for the average person.
A UV index of 1 represents the lowest measurable UV radiation level. Sunburn risk is negligible for most skin types, though prolonged exposure over several hours can still cause mild damage to very fair skin.
At UV 1, the sun is either very low on the horizon (early morning, late afternoon) or heavily filtered by clouds or atmosphere. This level is typical during winter months at higher latitudes or at dawn/dusk in tropical regions.
Estimated minutes until sunburn begins for each Fitzpatrick skin type at UV 1 without sunscreen or protective clothing.
| Skin Type | Burn Time | With SPF 30 | With SPF 50 |
|---|---|---|---|
| Type I - Very fair, always burns | 60 min | ~120 min | ~120 min |
| Type II - Fair, burns easily | 90 min | ~120 min | ~120 min |
| Type III - Medium, sometimes burns | 150 min | ~120 min | ~120 min |
| Type IV - Olive, rarely burns | 240 min | ~120 min | ~120 min |
| Type V - Brown, very rarely burns | 360 min | ~120 min | ~120 min |
| Type VI - Dark, never burns | 540 min | ~120 min | ~120 min |
Times are estimates based on Fitzpatrick skin typing at UV 1. Actual burn times vary by skin condition, altitude, reflection, and acclimatisation.
All outdoor activities are safe without restriction. This is ideal for extended hiking, sports, gardening, and beach walks.
Barely. UV 1 is too weak to build a noticeable tan, although UVA still ages skin over time.
Best UV index for tanning - full guide →피부 타입, SPF, 의류에 따라 햇빛 노출 추정치를 맞춤 설정하세요.
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