Last updated: July 2, 2025
Understanding the UV Index in Sells, United States, is crucial for safeguarding your skin health in this arid, semi-desert climate. With peak UV levels soaring to 12 during midday, residents and visitors must recognize the implications of exposure to ultraviolet rays—primarily their role in causing sunburn and increasing the risk of skin cancer. Knowing the daily UV Index empowers you to take necessary precautions to enjoy the sun while protecting your skin. As you navigate through Sells' warm days, staying informed about these UV levels can make all the difference in ensuring a safe and healthy outdoor experience.
The UV Index varies significantly throughout the day, peaking from 12:00 PM to 1:00 PM with a striking 12. Early morning starts off mild, reaching a maximum of 1 at 7:00 AM before climbing through the hours. At 9:00 AM, it hits 5, and by 10:00 AM, it intensifies to 8. The sun's intensity continues to rise, attaining its highest points at 11:00 AM and 12:00 PM, with the index hitting 10 and 12, respectively. As the afternoon progresses, a gradual decline begins; by 3:00 PM, it dips to 8, then further to 5 at 4:00 PM. The UV Index settles back down to 3 by 5:00 PM and returns to 1 as evening approaches, illustrating the importance of sun protection, particularly during the peak hours of midday.
| 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 | 10 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, seasonal UV changes reveal a significant increase in UV exposure, peaking during the summer months. From January to February, the UV Index rises from 5 (moderate) to 7 (high), signaling a gradual need for protection. The high-risk months, particularly from March through September, exhibit extreme levels of UV Index, with values reaching 12, where burn time drops to just 10 minutes. April and May maintain this intensity, while August and September remain at 11, still within the extreme category. Visitors and residents should take precautions during these months, including wearing wide-brimmed hats, applying sunscreen with high SPF, and seeking shade, especially between 10 AM and 4 PM. As autumn approaches, UV levels decrease, but attention to sun safety remains important into November. During the winter months of December and January, UV exposure is lower, but it’s still advisable to remain vigilant, especially if snow is present, as it can reflect UV rays.
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 |
| Sells | 5 | 7 | 9 | 11 | 12 | 12 | 12 | 11 | 11 | 8 | 6 | 5 |