Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Tulelake, United States, where the combination of a Mediterranean climate and elevated sun exposure can lead to significant health issues if precautions are not taken. The UV levels can reach a peak of 11 in the early afternoon, highlighting the potential for sunburn and long-term skin damage. By staying informed about these levels, you can effectively protect your skin, ensuring you enjoy the sun safely while minimizing risks. Awareness of the UV Index helps you plan your outdoor activities wisely, safeguarding both your health and enjoyment in the beautiful, sunny environment of Tulelake.
The UV Index throughout the day follows a predictable rise and fall, peaking at 11 around 1:00 PM. Starting at a modest 1 at 7:00 AM, it gradually escalates, reaching 10 by 12:00 PM, signaling the need for sun protection. As the afternoon progresses, the index dips from 11 to 8 by 3:00 PM, then declines further to 2 by 6:00 PM, and finally settles back at 1 by 7:00 PM. This data underscores the importance of taking precautions during the hours of peak UV exposure, particularly between 11:00 AM and 3:00 PM, when levels are highest and pose the greatest risk to skin health.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Seasonal UV changes show a significant increase from winter to summer, peaking in May, June, and July with an extreme UV Index of 11 and a burn time of just 10 minutes. Notably, April marks the transition to very high levels at 9, while March reaches a high level of 7. August and September continue with very high ratings of 10 and 9 respectively, indicating continued caution is needed during these months. High-risk months for UV exposure, therefore, are April through September, when the UV Index is consistently high to extreme. Visitors and residents should take proper precautions, including wearing sunscreen, protective clothing, and seeking shade during peak sun hours, especially between 10 AM and 4 PM. As the year progresses towards fall and winter, UV levels decrease, returning to a moderate level (3-5), but vigilance remains important for skin protection at any time of the year.
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 |
| Tulelake | 3 | 5 | 7 | 9 | 11 | 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 |