UV Index in Apache Junction, United States

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Apache Junction, where the BWh climate leads to intense sunlight, especially during summer months. With UV levels often reaching extreme heights—topping out at 12 around midday—awareness of these values becomes essential for sunburn prevention and overall skin health. The potential risks associated with high UV exposure are significant, making it vital for everyone to take precautionary measures. By staying informed about local UV index levels, you can protect yourself and enjoy the beautiful Arizona sun safely!

Hourly UV Index in Apache Junction

As the sun rises, the UV Index starts off mild at 1 at 07:00, making it safe to enjoy the morning outdoors. By 08:00, it increases to 3, signaling the need for light protection. However, the real intensity kicks in as the clock strikes 10:00, with the index peaking at a robust 12 by 12:00 and 13:00. During these hours, the sun’s rays are at their strongest, reaching a maximum of 11 at 11:00. As afternoon transitions into evening, the index begins to decline, dropping to 10 at 14:00 and gradually falling to 1 by 19:00. To make the most of your day, plan your outdoor activities in the early morning or late afternoon for a safer experience under the sun!

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
13:0012extreme10 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 Apache Junction

As the year progresses, seasonal UV changes indicate a significant increase in UV exposure from January to May, reaching an extreme level of 11 by May and staying elevated throughout the summer months of June and July. The high-risk months for UV exposure are March through September, particularly April and May, which see very high to extreme UV Index values. During these peak months, the burn time reduces dramatically to just 10 minutes, necessitating strong sun protection measures. Visitors and residents are advised to limit sun exposure during these high UV periods, especially around midday, by wearing sunscreen, protective clothing, and hats, while seeking shade whenever possible. As the year comes to a close, UV levels drop back down to moderate levels in November and December, where precautions can be relaxed slightly.

Monthly Maximum UV Index for Apache Junction, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Apache Junction. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec469101112111110854
Data source: Statistical UV Index data for Apache Junction, 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 Apache Junction UV Index with Other United States Cities

The table above highlights how UV exposure in Apache Junction 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.
Apache Junction'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
Apache Junction469101112111110854
Houston UVI589111112121110975