UV Index in Agana Heights Village, Guam

Last updated: July 2, 2025

In Agana Heights Village, Guam, being aware of the UV Index is crucial for protecting skin health and preventing sunburn. Understanding UV levels can help you make informed decisions about sun exposure throughout the day, especially during peak hours when the UV Index reaches a maximum of 14 around noon. With the village's tropical Af climate, residents and visitors face increased UV exposure risks, making it essential to stay informed and take necessary precautions. By monitoring the UV Index, you can enjoy the beautiful Guam sun safely while safeguarding your skin from harmful effects.

Hourly UV Index in Agana Heights Village

The UV Index for the day presents a dynamic shift in sun exposure, climbing steadily from a safe 1 at 07:00 to an impressive peak of 14 at 12:00. As the sun rises, so does the intensity of its rays, reaching a notable 12 at 11:00. Between 10:00 and 14:00, the UV Index remains high, urging caution—particularly at 11:00 and 12:00, when protective measures are essential. As the afternoon progresses, values gradually dip, descending to 8 at 15:00 and further to 2 by 17:00. By evening, the UV Index falls to 0 at 19:00, signaling a welcome retreat from the sun's harmful rays. Remember to stay sun savvy during peak hours for your skin’s health!

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.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	3	moderate	30 min
09:00	5	moderate	30 min
10:00	9	very high	15 min
11:00	12	extreme	10 min
12:00	14	extreme	10 min
13:00	13	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 min
16:00	4	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Agana Heights Village

The UV Index exhibits extreme levels throughout the year, with consistent ratings between 11 and 15 from January to September. The highest UV Index of 15 occurs in March, April, and September, marking these as the high-risk months for sun exposure. Visitors and residents should be particularly cautious during these months, as the burn time is as short as 10 minutes across all months listed, indicating a significant risk of skin damage. To ensure safety, it is crucial to use adequate sun protection, such as broad-spectrum sunscreen, protective clothing, and seeking shade, especially during peak sun hours.

Monthly Maximum UV Index for Agana Heights Village, Guam

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Agana Heights Village. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Agana Heights Village, 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 Agana Heights Village UV Index with Other Guam Cities

The table above highlights how UV exposure in Agana Heights Village compares to other major locations across Guam. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Agana Heights Village's solar exposure compared to other cities in Guam. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Agana Heights Village	11	13	15	15	13	14	14	14	15	13	12	11
Barrigada Village UVI	11	13	15	15	13	14	14	14	15	13	12	11
Mangilao Village UVI	11	13	15	15	13	14	14	14	15	13	12	11
Tamuning-Tumon-Harmon Village UVI	11	13	15	15	13	14	14	14	15	13	12	11
Yigo Village UVI	11	13	15	15	13	14	14	14	15	13	12	11
Dededo Village UVI	11	13	15	15	13	14	14	14	15	13	12	11