UV Index in Yarnell, United States

Last updated: May 3, 2025

Being aware of the UV Index is crucial for residents and visitors of Yarnell, Arizona, where the climate can lead to high sun exposure. Understanding UV levels is essential not only for preventing sunburns but also for maintaining long-term skin health. With Yarnell's high desert environment, the UV Index can peak up to 12 around midday, posing significant risks for skin damage if precautions are not taken. Stay informed and protected to enjoy the beautiful Arizona sunshine safely!

Hourly UV Index in Yarnell

The UV Index data reveals a dramatic rise in solar intensity throughout the morning, beginning with a mild 1 at 07:00, then climbing steadily to peak at 12 by 12:00 noon. This alarmingly high reading signals that the sun’s rays are most potent during this midday period. As the afternoon progresses, the index gradually declines, dipping to 10 at 14:00 and falling further to 5 by 16:00. By the late evening, the UV exposure fizzles out, dropping back down to a comfortable 1 by 19:00. For outdoor enthusiasts, the crucial takeaway is to take precautions during the peak hours, particularly between 11:00 and 13:00, to ensure skin safety and enjoyment!

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
08:003moderate30 min
09:005moderate30 min
10:008very high15 min
11:0011extreme10 min
12:0012extreme10 min
13:0011extreme10 min
14:0010very high15 min
15:007high25 min
16:005moderate30 min
17:002low45 min
18:001low45 min
19:001low45 min

Monthly UV Index Trends in Yarnell

Throughout the year, UV exposure varies significantly, with the high-risk months being March through August, when the UV Index peaks at 12, indicating extreme exposure levels. Specifically, April, May, and June consistently show this maximum UV Index, resulting in a burn time of only 10 minutes for unprotected skin. As summer transitions to fall, the UV Index gradually decreases, but still poses a very high risk in September and October with indices of 10 and 8, respectively. Residents and visitors should remain vigilant, particularly from March to August, and take protective measures, such as applying sunscreen, wearing protective clothing, and seeking shade during peak sunlight hours to minimize the risk of skin damage. In contrast, the winter months of January and December see lower UV exposure, categorized as moderate, with longer burn times of 30 minutes, making sun protection less critical but still advisable.

Monthly Maximum UV Index for Yarnell, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Yarnell. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec479111212121110864
Data source: Statistical UV Index data for Yarnell, 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 Yarnell UV Index with Other United States Cities

The table above highlights how UV exposure in Yarnell 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.
Yarnell'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
Yarnell479111212121110864
Houston UVI589111112121110975