Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Jacksonville, United States, where the sunny climate can lead to significant exposure risks. With peak UV levels soaring to 11 around midday, awareness is key to preventing sunburn and protecting your skin's health. In this vibrant city, where outdoor activities abound, knowing the daily UV fluctuations helps you make informed decisions to safeguard against skin damage. Be vigilant and stay informed about the UV Index to enjoy the sunshine responsibly while minimizing your risk!
The UV Index throughout the day paints a vivid picture of sun exposure intensity. Starting off with a gentle 1 at 07:00 and 08:00, the index gradually climbs, reaching a moderate level of 3 by 09:00. As the sun rises higher, it peaks at a striking 11 between 13:00 and 14:00, signaling the most intense sun exposure, ideal for sunblock and shade. The afternoon sees a gradual decline, with readings dropping to 9 at 15:00, and continuing down to 4 by 17:00. By evening, the UV intensity settles back to a safe 1 at 19:00. Remember, sunscreen is your best friend when the UV index is high!
| 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 | 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 | 11 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels fluctuate significantly, with the highest risk occurring during the summer months. Notably, from May to August, the UV Index reaches extreme levels (11-12), where the burn time decreases to just 10 minutes, warranting heightened caution. March and April also present high risk with very high categories (8-10) and burn times of 15 minutes. The high-risk months for UV exposure are therefore March through August, requiring visitors and residents to take preventive measures such as wearing protective clothing, applying sunscreen regularly, and seeking shade, especially during peak hours. In contrast, January, February, November, and December experience lower UV levels with moderate to high exposure categories, offering some respite, yet protective measures are still recommended on sunnier days. Stay informed and stay safe under the sun!
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 |
| Jacksonville | 4 | 7 | 8 | 10 | 11 | 11 | 12 | 11 | 10 | 8 | 6 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |