Last updated: May 3, 2025
In the picturesque town of Nauvoo, United States, staying informed about the UV Index is crucial for protecting your skin from harmful ultraviolet rays. Understanding UV levels can significantly contribute to sunburn prevention and overall skin health, helping residents and visitors alike make informed choices about sun exposure. With a humid continental climate (Dfa), Nauvoo experiences varying UV exposure risks throughout the day, peaking at a high of 9 between noon and 2 PM. This means that taking precautions, especially during the summer months, can mean the difference between a fun day outdoors and painful sunburn. Stay safe and enjoy the beautiful sunny days while keeping an eye on that UV Index!
The UV Index for the day showcases a notable rise in intensity as the sun climbs higher in the sky. Starting at a low of 1 at 7:00 AM, the index gradually increases to a moderate level of 3 by 9:00 AM. However, from 10:00 AM onward, things heat up significantly, peaking at a scorching 9 from noon to 2:00 PM. As the afternoon progresses, the UV Index gradually dips back to a friendly 3 by 5:00 PM, then descends further to 1 by the time evening sets in. This pattern underscores the importance of sun protection during peak hours, especially between 11:00 AM and 2:00 PM, when UV levels are at their highest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index displays significant seasonal changes that reflect varying levels of sun exposure. January and February begin with a moderate UV Index of 3 to 5, allowing for 30-minute burn times without significant risk. As spring approaches, March increases to a high index of 6, reducing burn time to 25 minutes. The summer months of April through June feature the highest UV levels, peaking at an extreme index of 11 in June, where just 10 minutes of exposure can lead to burns. July and August remain very high, with an index of 9 to 10 and 15-minute burn times. September sees a decline to an index of 8 but still requires caution due to its 15-minute burn time. As we enter fall and winter, October drops to a high index of 6, allowing for 25 minutes of safer exposure before descending to moderate levels in November and low levels in December, with burn times extending to 30 and 45 minutes, respectively. Visitors and residents are strongly advised to monitor the UV Index, particularly during the high-risk months of April through September, and to take appropriate precautions such as wearing sunscreen, protective clothing, and seeking shade during peak hours to minimize skin damage.
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 |
| Nauvoo | 3 | 5 | 6 | 9 | 9 | 11 | 10 | 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 |