Arcata, California, USA Hourly UV Index
UV Index Forecast (Next 24 Hours)
The highest UV index is 5.8 and it is expected to occur on 4/7/2025 at 10:00 AM.
UV Index Graph
Time to Burn by Skin Type
I
II
III
IV
V
VI
Time to Burn Calculation
Time to burn is calculated as:
Time (minutes) = (200 * Skin Type Factor) / (3 * UV Index)
For example, for Skin Type I (factor 2.5) and UV Index 5:
Time = (200 * 2.5) / (3 * 5) = 33 minutes
UV indices below 1.5 are not displayed because the risk is minimal.
Highest UV Index for Succeeding Days
| Date | Highest UV Index | Time |
|---|---|---|
| 4/8/2025 | 5.0 | 10:00 AM |
| 4/9/2025 | 5.2 | 10:00 AM |
| 4/10/2025 | 3.7 | 08:00 AM |
| 4/11/2025 | 0.1 | 04:00 PM |