Last updated: July 2, 2025
Understanding the UV Index is crucial for the residents and visitors of Silverton, United States, where the dry, high desert climate can lead to higher levels of UV exposure. Being aware of UV levels helps in preventing sunburn and protecting long-term skin health, especially during peak hours when the index can soar to as high as 12. With typical daily UV exposures ranging from low in the morning to very high around midday, it's essential to take proactive measures, such as wearing sunscreen and protective clothing, to enjoy the beautiful outdoor environment while minimizing health risks.
The UV Index today presents a striking pattern of intensity, peaking sharply around noon. Starting at a mild 1 at 7:00 AM and 8:00 AM, it climbs steadily through the morning hours, reaching 5 by 10:00 AM. The real surge occurs as the day progresses—7 at 11:00 AM escalates to an intense 10 by 12:00 PM. The highest point is observed at 12 during the 1:00 and 2:00 PM hours, indicating a very high risk for harm from unprotected sun exposure. As the afternoon wanes, the intensity begins to decline gradually to 11 at 3:00 PM, then down to 8 by 4:00 PM, and further drops to 3 by 6:00 PM. Finally, it settles back to a safe 1 around 7:00 PM. For outdoor enthusiasts, this forecast urges caution—protect your skin during peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 11 | extreme | 10 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels vary significantly, with the highest risk occurring during the summer months. From March to August, the UV Index peaks, reaching extreme levels of 11 to 12, particularly in April, May, and June. During these months, the burn time reduces drastically to just 10 minutes, indicating a heightened risk for skin damage. Visitors and residents should be especially cautious from March through August, applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade during peak hours. As the seasons shift, September and October still present very high UV exposure, with a slight decrease in burn time to 15 minutes. Conversely, winter months like December and January see a return to moderate levels, where the burn time extends to 30 minutes, providing a safer environment for outdoor activities. For the best protection year-round, stay informed about the UV Index and adjust outdoor plans accordingly.
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 |
| Silverton | 4 | 6 | 8 | 11 | 11 | 12 | 12 | 11 | 10 | 8 | 6 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |