Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Boonville, United States, where the climate can intensify sun exposure risks, particularly during peak summer months. Being informed about UV levels helps you take proactive steps in preventing sunburn and protecting your skin health. With UV Index values peaking at 9 around midday, awareness is key to enjoying the sun safely. Boonville's Dfb climate means you'll need to stay vigilant about sun safety year-round to minimize the harmful effects of UV radiation. Keep your skin protected and enjoy the outdoors!
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 |
As the seasons transition, the UV Index shows notable fluctuations, indicating varying levels of sun exposure risk. January and February experience moderate UV levels (3 and 4), with a burn time of 30 minutes. The risk increases sharply in March with a UV Index of 6, classified as high, reducing the safe exposure time to 25 minutes. The most critical months for UV exposure are April through September, where the Index peaks to 10 in June, denoting very high risk, with a burn time as short as 15 minutes. October sees a drop to a high UV Index of 6, while November and December return to moderate and low levels (3 and 2), allowing for longer exposure times of 30 and 45 minutes, respectively. Visitors and residents are advised to take precautions during the high-risk months—especially between April and September—by wearing sunscreen, protective clothing, and seeking shade when outdoors to minimize the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Boonville | 3 | 4 | 6 | 8 | 9 | 10 | 9 | 9 | 8 | 6 | 3 | 2 |
| 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 |