UV Index in Alpena, United States

Last updated: June 2, 2025

Understanding the UV Index is crucial for the residents of Alpena, United States, especially in a climate like ours, categorized as Dfb, where seasonal variations can lead to unpredictable sun exposure. Monitoring UV levels not only helps in preventing painful sunburns but also plays a key role in maintaining long-term skin health. With peak UV Index readings reaching 10 around midday, it's important to stay informed about daily fluctuations to protect yourself and your loved ones. Awareness of UV risks in Alpena allows residents to enjoy the outdoors safely while minimizing the potential harm from the sun's rays.

Hourly UV Index in Alpena

As the sun rises, UV Index levels begin modestly at 1 by 07:00 and maintain that low intensity until 09:00. However, from 10:00, there's a noticeable escalation, peaking at 10 between 13:00 and 14:00, indicating a high risk of harm from unprotected sun exposure. During the midday hours, particularly around 12:00, the index reaches 9, emphasizing the need for sun protection. As the afternoon progresses, the intensity gradually declines, settling back to 5 by 17:00. By evening, the UV Index drops significantly, returning to 1 by 19:00, allowing for a safe outdoor experience as day turns to night. Knowledge of these changing levels can help you enjoy the sun while staying safe!

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
11:007high25 min
12:009very high15 min
13:0010very high15 min
14:009very high15 min
15:008very high15 min
16:007high25 min
17:005moderate30 min
18:003moderate30 min
19:001low45 min

Monthly UV Index Trends in Alpena

Throughout the year, the UV Index reveals significant seasonal changes in sun exposure risks. January and December are the safest months, with a low exposure category and burn times of 45 minutes, while February and March indicate a moderate risk with an elevated UV Index of 4 and 5, respectively. The high-risk period peaks from April to August, where the UV Index climbs to very high levels, particularly in June (10) and July (9), warranting a burn time reduction to just 15 minutes. September sees a slight decrease to a high category (UV Index 7) while October through November return to moderate levels. Visitors and residents should take precautions during high-risk months by applying sunscreen, wearing protective clothing, and seeking shade, especially between April and August when the sun's intensity is at its highest.

Monthly Maximum UV Index for Alpena, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Alpena. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
Data source: Statistical UV Index data for Alpena, 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 Alpena UV Index with Other United States Cities

The table above highlights how UV exposure in Alpena 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.
Alpena's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Alpena2457810987532
Chicago UVI34689101098642
Brooklyn UVI35681010998642
New York City UVI35681010998642
Los Angeles UVI46891011111010754
Houston UVI589111112121110975