What is Logan UV index Scale today?
Consult Logan UV index today to determine whether the sun exposure is safe or if precautions should be taken.
Logan Current UV Index
0.9981
UV Index Datetime
2026-06-17 14:11:41
Logan Max UV Index
8.5756
Max UV Index Datetime
2026-06-17 19:29:36
City
Logan
Country
United-States
Latitude
41.7399
Longitude
-111.8422
Today's max logan UV index is very high, with a value of 8.5756 around 2026-06-17 19:29:36. Limit your exposure to the sun, especially during midday; ensure to wear protective clothing, apply sunscreen, and use a hat.
Current Logan UV index is low, registering at 0.9981. Enjoy outdoor activities safely, as the sun's rays are not very strong.
What's the uv right now in Other Cities of United-States (Today UV Rays)
Logan Real-Time UV Index Forecast Chart (Hourly Logan UV Index Chart)
Explore Logan UV Index Forecast Chart for next hours to stay informed about the varying levels of ultraviolet radiation index throughout the day
Safe Exposure Time Calculation in (Time to Burn Chart)
The most commonly used scheme to classify a person’s skin type by their response to sun exposure in terms of the degree of burning and tanning was developed by Thomas B. Fitzpatrick, MD, PhD. As a meter of fact even the skin color of Emoji characters based on the Fitzpatrick scale.
| Skin Type | Color | Typical Features | Tanning Ability | Time to Burn (minutes) |
|---|---|---|---|---|
| I | Red or blond hair; light-colored eyes; freckles likely | Always burns, does not tan | 166.98 | |
| II | Light eyes; light hair | Burns easily, tans poorly | 200.38 | |
| III | Any eye or hair color (very common skin type) | Tans after initial burn | 267.17 | |
| IV | Dark brown hair; medium to heavy pigmentation | Burns minimally, tans easily | 333.97 | |
| V | Dark hair; rarely sun sensitive | Rarely burns, tans darkly easily | 534.35 | |
| VI | N/A | Never burns, always tans darkly | 1001.9 |
Ultraviolet Radiation Reflection from Surfaces
Highly reflective surfaces can increase surrounding levels of solar UV including concrete, snow, glass, water and polished metals (see source).
Reflected UV Levels
| Material | Reflected Solar UV Rays (%) | Effective UV Index | UV Color |
|---|---|---|---|
| New black roadway (Asphalt) | 4.1% | 1.04 | |
| Old grey roadway (Asphalt) | 8.9% | 1.09 | |
| Footpath (Concrete) | 10.1% | 1.1 | |
| Grasslands (Grass) | 1.2% | 1.01 | |
| Lawn (Grass) | 3.5% | 1.03 | |
| Fiberglass boat deck | 9.1% | 1.09 | |
| White house paint | 22% | 1.22 | |
| Wet beach sand | 7.1% | 1.07 | |
| Dry beach sand | 16.5% | 1.16 | |
| Clay/humus (Soil) | 5% | 1.05 | |
| Open water | 3.3% | 1.03 | |
| Open ocean | 8% | 1.08 | |
| Sea surf/white foam | 27.5% | 1.27 | |
| Snow old/new | 69% | 1.69 | |
| Wood boat deck | 6.6% | 1.06 |
Required Sunlight Exposure for Vitamin D in Logan
Vitamin D is a hormone that controls calcium levels in the blood. It is needed to develop and maintain healthy bones, muscles and teeth and is also important for general health. The human body can get vitamin D in two ways: diet or sun exposure.
Minutes for sunlight exposure for sufficient Vitamin D intake (see source).
| Skin Type | Exposure Time (Logan Current UV Level: Low) |
|---|---|
| I | 15-20m |
| II | 20-30m |
| III | 30-40m |
| IV | 40-60m |
| V | 60-80m |
| VI | - |
Logan Historical UV Index Trends Over the Past Year (Monthly Logan UV Index Chart)
This chart presents a detailed view of the UV rating index fluctuations throughout the past year, enabling you to identify the months with lower UV levels. By observing the monthly UV trends, you can determine the safer periods for outdoor activities with reduced risk of harmful UV exposure. It's a practical tool for planning outdoor ventures while prioritizing skin health and safety.
