Last updated: May 3, 2025
Understanding the UV Index in Nacogdoches, United States is crucial for safeguarding your skin while enjoying the sunny climate of this picturesque region. The UV Index provides vital information about the sun's intensity and helps you gauge potential risks for sunburn and long-term skin damage. With Nacogdoches being in a humid subtropical climate (Cfa), residents and visitors alike should be particularly mindful of high UV levels during midday hours when readings soar to 11, signaling extreme exposure. By staying informed about these levels, you can embrace the outdoors with confidence while prioritizing your skin health.
The UV Index throughout the day presents a clear pattern of increasing intensity, peaking at noon. Starting from a low of 1 at 7:00 AM and 8:00 AM, it steadily rises, reaching 3 by 9:00 AM. The real surge occurs between 10:00 AM and 1:00 PM, where the index escalates dramatically, hitting a high of 11 at both 12:00 PM and 1:00 PM—a strong indicator of potential harm from unprotected sun exposure. As the afternoon progresses, the UV Index begins to decline, with values of 9 at 3:00 PM, tapering off to 2 by 6:00 PM, and finally returning to 1 by 7:00 PM. For those enjoying outdoor activities, it's crucial to stay protected during the midday peak hours to safely bask in the sun!
| 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 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 9 | 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 |
Throughout the year, seasonal variations in UV index indicate fluctuating levels of sun exposure risk. Notably, high-risk months occur from March to August, where the UV index reaches extreme levels (11-12), particularly during May and July. In these months, the burn time is alarmingly short at just 10 minutes, highlighting the urgent need for sun protection. Visitors and residents are advised to take precautionary measures during this peak period, such as seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen regularly. As the year progresses toward winter, UV levels decrease significantly, and by December, the exposure category reverts to moderate, allowing more comfortable outdoor activity for longer durations. It is essential to stay informed and safeguard against sun damage year-round.
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 |
| Nacogdoches | 4 | 7 | 9 | 10 | 11 | 11 | 12 | 11 | 10 | 8 | 6 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |