Last updated: July 2, 2025
Staying informed about the UV Index in Shamrock, United States, is crucial for protecting your skin from harmful ultraviolet rays. Understanding UV levels can help you prevent sunburn and safeguard your skin's health, particularly in this semi-arid climate, where the intensity of UV radiation can peak significantly during the summer months. With the UV Index often reaching as high as 12 around midday, it's essential to be aware of the risks associated with outdoor activities and take appropriate precautions to enjoy the sunshine safely. Keep your skin glowing and healthy by checking the UV Index daily!
The UV Index data paints a vivid picture of a sun-drenched day. Starting off gently at 1 from 7:00 AM to 8:00 AM, the intensity gradually increases, reaching a moderate 2 by 9:00 AM. As noon approaches, the sun’s rays become more potent, peaking at a striking 10 at 12:00 PM, then hitting a maximum of 12 between 1:00 PM and 2:00 PM. This period marks the highest risk for sun exposure, advising vigilant protection. The afternoon sees the UV Index decline, dropping to 5 by 5:00 PM, before tapering off to a soft 3 by 6:00 PM, and finally returning to 1 after 7:00 PM. It's a day where sun safety is paramount, especially during the 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 | 11 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 11 | extreme | 10 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index displays significant seasonal variations. The high-risk months, characterized by extreme UV levels and minimal burn times, are May through August, with June and July reaching a peak UV Index of 12 and an urgent burn time of just 10 minutes. As spring transitions to summer, the UV Index escalates from a moderate level of 4 in January to an extreme of 11 in May, then gradually declines again in fall and winter. Visitors and residents are advised to take precautions during these high-risk months, such as seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen to minimize the risks of skin damage from UV exposure. In contrast, during the moderate months of November and December, exposure is less critical, but protective measures are still recommended. Stay informed and protect your skin year-round!
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 |
| Shamrock | 4 | 6 | 8 | 10 | 11 | 12 | 12 | 11 | 10 | 7 | 5 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |