Last updated: June 2, 2025
Being aware of the UV Index is crucial for residents of Ellis, United States, especially given the region's Cfa climate, known for its warm summers and moderate precipitation. Understanding UV levels helps in preventing sunburn and maintaining skin health, as excessive sun exposure can lead to long-term skin damage. During peak hours, particularly between 11:00 AM and 2:00 PM, UV Index values soar as high as 11, signaling a risk of harm from unprotected sun exposure. Staying informed about the UV Index not only protects your skin but also encourages outdoor enjoyment with the wise use of sun safety practices.
The hourly UV Index paints a vivid picture of the sun's intensity throughout the day. Starting off gently in the early morning, with maximum readings of 1 at 07:00 and 08:00, it gradually begins to climb. By 09:00, it reaches 3, signaling a noticeable increase in UV exposure. The sun peaks dramatically at 12:00, soaring to a 10, reaching its zenith with a maximum of 11 at both 13:00 and 14:00—a prime time for sun protection. As the afternoon slips into evening, the UV Index begins to recede, dropping to 8 by 16:00, and then tapering off to 5 at 17:00. The day winds down with a safe 3 at 18:00 and returns to a manageable 1 by 19:00, reminding us to stay vigilant and enjoy the sun responsibly throughout the day.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 10 | very high | 15 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, UV exposure varies significantly, with high-risk months typically occurring from March to September. During these months, particularly in April through July, the UV index reaches notably high levels, peaking at 11, which indicates extreme exposure risks and a quick burn time of just 10 minutes. As the seasons shift, visitors and residents should be particularly vigilant from May to August, when protective measures such as sunscreen, hats, and seeking shade are essential to prevent skin damage. In contrast, January, November, and December present a moderate UV index of 3-4, allowing for longer burn times of 30 minutes, though sunscreen should still be applied. Staying informed about these UV changes can help ensure safe outdoor activities 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 |
| Ellis | 3 | 5 | 7 | 9 | 10 | 11 | 11 | 10 | 9 | 6 | 4 | 3 |
| 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 |