UV Index in Fort Sumner, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Fort Sumner, United States, where sunny days are abundant due to its BSk climate. The UV levels can fluctuate dramatically throughout the day, peaking around midday with values reaching 12, indicating a strong risk of harm from unprotected sun exposure. Awareness of UV Index ratings is essential not only for preventing sunburn but also for promoting long-term skin health. By staying informed about daily UV levels, you can better protect yourself and your loved ones from the harmful effects of excessive sun exposure, especially during the hottest hours of the day.

Hourly UV Index in Fort Sumner

At sunrise, the UV Index begins its steady climb, starting at a safe 1 at 07:00. As the morning progresses, it escalates to 2 by 08:00 and reaches a pleasant 4 by 09:00. However, the real intensity hits between 10:00 and 13:00, with the UV Index peaking at a scorching 12 at 12:00, indicating a high risk of harm from unprotected sun exposure. As the afternoon unfolds, levels gradually descend, hitting 9 at 15:00 before tapering off to 4 by 17:00. By the evening hours, the index returns to a mild 1 by 19:00, reminding us of the importance of sunscreen amidst the sun's powerful midday rays.

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
08:002low45 min
09:004moderate30 min
10:007high25 min
11:0010very high15 min
12:0012extreme10 min
13:0012extreme10 min
14:0011extreme10 min
15:009very high15 min
16:006high25 min
17:004moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Fort Sumner

Over the year, UV levels exhibit significant seasonal changes, peaking during the summer months. January and December have a moderate UV Index of 4, allowing for a burn time of 30 minutes. As we move into February, the UV Index rises to 7 (high), and by March, it escalates further to 9 (very high) with a reduced burn time of 15 minutes. The extreme levels begin in April with an Index of 11, continuing until July, where the Index remains high at 12-13, requiring only 10 minutes for potential skin damage. August maintains this extreme level, followed by a slight decline in September (10) and October (8). November sees a drop to 6 (high), and then it returns to 4 in December. Therefore, visitors and residents should take extra precautions from April to August, when the UV Index reaches extreme levels—wear protective clothing, apply sunscreen frequently, and limit exposure during peak hours to minimize the risk of skin damage.

Monthly Maximum UV Index for Fort Sumner, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Fort Sumner. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec479111213121210864
Data source: Statistical UV Index data for Fort Sumner, 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 Fort Sumner UV Index with Other United States Cities

The table above highlights how UV exposure in Fort Sumner 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.
Fort Sumner'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
Fort Sumner479111213121210864
Houston UVI589111112121110975