Last updated: June 2, 2025
Understanding the UV Index in Silverthorne, United States is crucial for protecting your skin and maintaining overall health. With high elevation and prevailing Dfc climate conditions, residents and visitors alike are often at risk for increased UV exposure, especially during midday hours when the index can soar to a maximum of 14. Familiarity with UV levels can help you take proactive measures to prevent sunburn and related skin damage. As you enjoy the stunning outdoors of Silverthorne, being aware of the UV Index can ensure you stay safe while soaking up the sun's beauty.
As the day unfolds, the UV Index peaks dramatically, reminding us to take heed of the sun’s intensity. Starting at a safer 1 at 7:00 AM, it rises steadily, hitting 3 by 8:00 AM and climbing to a moderate 5 by 9:00 AM. The sun begins to showcase its strength as it reaches 8 at 10:00 AM, before soaring to a critical 11 by 11:00 AM. The highest point of the day arrives at 13 and 14 between 12:00 PM and 1:00 PM, marking the most dangerous hours for sun exposure. As afternoon progresses, the intensity slightly wanes, dropping to 11 by 3:00 PM and then easing further to 8 at 4:00 PM. As the sun begins to lower, the UV Index falls to 5 by 5:00 PM, and concludes the day at a gentle 1 by 7:00 PM. Remember to protect your skin during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 11 | extreme | 10 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure levels fluctuate significantly, with high-risk months typically occurring from March through September. During these months, the UV Index peaks, reaching extreme levels of 12 to 14 in April, May, June, and July, where the recommended burn time is as little as 10 minutes. Conversely, the UV Index remains lower during the winter months, with January and December registering a moderate Index of 4, allowing for a safer burn time of 30 minutes. Visitors and residents are advised to exercise caution and protection, particularly between March and September, by wearing sunscreen, protective clothing, and sunglasses during peak sunlight hours to minimize the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chicago UVI | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 6 | 4 | 2 |
| Brooklyn UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
| New York City UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
| Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |
| Silverthorne | 4 | 6 | 9 | 12 | 13 | 14 | 13 | 12 | 11 | 7 | 5 | 4 |