UV Index in Nacogdoches, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for the residents of Nacogdoches, United States, where the subtropical Cfa climate brings both warmth and elevated sun exposure. With UV levels soaring to a maximum of 12 around midday, awareness of these readings is vital for effective sunburn prevention and maintaining long-term skin health. Recognizing when UV rays are strongest—from mid-morning through early afternoon—can help you protect yourself and your loved ones from harmful effects, ensuring you enjoy the beautiful Texas sun safely. Be informed, stay vigilant, and embrace the outdoors with the right precautions!

Hourly UV Index in Nacogdoches

The UV Index on this particular day reveals a dynamic shift in sun exposure as the hours progress. Starting off at a mild 1 at 07:00, it remains low until 09:00, when it begins to rise gradually. By 10:00, the index reaches 5, signaling the start of heightened UV radiation. The day peaks sharply at 12:00 with a breathtaking 10, and just one hour later, it hits its maximum at 13:00 with an impressive 12. As the afternoon continues, the UV levels begin to decline, dropping to 11 at 14:00, and further decreasing to 9 by 15:00. The evening hours offer a welcome respite as the index falls to 4 at 17:00, then down to 2 by 18:00, and finally returning to a low 1 by 19:00. It's a vivid reminder to stay protected during those peak hours!

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
TimeUVICategoryTime to Burn
07:001low45 min
08:001low45 min
09:003moderate30 min
10:005moderate30 min
11:008very high15 min
12:0010very high15 min
13:0012extreme10 min
14:0011extreme10 min
15:009very high15 min
16:007high25 min
17:004moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Nacogdoches

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.

Monthly Maximum UV Index for Nacogdoches, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Nacogdoches. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec479101111121110864
Data source: Statistical UV Index data for Nacogdoches, based on information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Compare Nacogdoches UV Index with Other United States Cities

The table above highlights how UV exposure in Nacogdoches compares to other major locations across United States. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Nacogdoches's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Chicago UVI34689101098642
Brooklyn UVI35681010998642
New York City UVI35681010998642
Los Angeles UVI46891011111010754
Nacogdoches479101111121110864
Houston UVI589111112121110975