Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Jonesville, United States, where sunny days are common in the Cfa climate zone. As ultraviolet radiation levels rise, so does the risk of sunburn and long-term skin damage. With peak UV Index readings reaching as high as 11 during midday, it's vital to stay informed about daily UV levels to protect your skin's health and embrace the outdoors safely. Whether you’re planning a picnic or simply enjoying an afternoon in the sun, knowing when to seek shade or apply sunscreen can make all the difference in preserving your skin’s vitality.
At dawn, the sun's embrace is gentle, with a UV Index of just 1 at 07:00 and 08:00, making it a safe time for morning strolls. However, as the day unfolds, intensity rises sharply; by 10:00, the index escalates to 5, signaling the need for sun protection. The peak arrives at noon, reaching an intense 10, and by 13:00, it skyrockets to an alarming 11, urging caution for outdoor activities. Gradually winding down, the index descends to 8 at 15:00 before tapering off further to 2 by 18:00. As dusk approaches, the evening's reflection offers a safe retreat as the index returns to a welcoming 1 by 19:00. Stay vigilant during midday hours for a safer sun experience!
| 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 | 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 |
As the seasons change, so do the UV Index levels, with significant increases noted from February through October. The high-risk months for UV exposure are March to October, where the index reaches peaks of 10 to 11, indicating very high to extreme exposure levels with minimal burn times of just 10 to 15 minutes. Visitors and residents are advised to take precautions during these months, such as wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak sun hours. In contrast, January, November, and December exhibit moderate UV levels, allowing for longer exposure times of up to 30 minutes; however, it's still advisable to remain cautious. Engaging in outdoor activities requires vigilance year-round, particularly during the high UV months, to protect skin health effectively.
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 |
| Jonesville | 4 | 6 | 8 | 10 | 11 | 11 | 10 | 10 | 9 | 8 | 5 | 3 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |