UV Index in Pastos, Puerto Rico

Last updated: June 2, 2025

In Pastos, Puerto Rico, keeping an eye on the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels can help you take proactive measures against sunburn and long-term skin damage, especially under the intense tropical sun. With a climate characterized by warm temperatures and high humidity, Pastos experiences significant UV exposure throughout the day, peaking at an extreme index of 13 during midday. By being informed about these fluctuations, you can enjoy your time outdoors while effectively protecting yourself from harmful rays.

Hourly UV Index in Pastos

The UV Index today reflects a dynamic progression of sun intensity throughout the hours. Starting at a modest 1 at 07:00, it gradually climbs to 3 by 08:00. A steady ascent leads to a significant peak of 13 at both 12:00 and 13:00, marking the most critical hours for sun exposure. As the afternoon wanes, the index gently descends to 10 at 14:00, then to 7 at 15:00, before tapering off to 4 at 16:00. By 18:00, it drops back to 1, and the day concludes under the protective shroud of dusk with a 0 by 19:00. This data serves as a reminder to stay sun-safe during peak hours, particularly between 10:00 and 14:00 when the sun's rays are at their strongest.

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	11	extreme	10 min
12:00	13	extreme	10 min
13:00	13	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 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 Pastos

The UV Index exhibits significant seasonal changes, with the highest readings occurring from February to October, where exposure levels reach an extreme category and burn times are dangerously short at 10 minutes. March through September are particularly high-risk months, peaking in April and May with a UV Index of 14. Residents and visitors should be extremely cautious during these months, ensuring proper sun protection such as wearing sunscreen, protective clothing, and sunglasses. In contrast, November and December are notable for their relatively lower UV levels classified as very high, albeit still requiring sun safety measures, with burn times lengthening to 15 minutes. It is advisable for everyone to monitor the UV Index regularly and adopt appropriate precautions year-round to minimize the risk of sunburn and long-term skin damage.

Monthly Maximum UV Index for Pastos, Puerto Rico

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Pastos. 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 Pastos, 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 Pastos UV Index with Other Puerto Rico Cities

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

Pastos's solar exposure compared to other cities in Puerto Rico. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Caguas UVI	9	11	13	13	14	13	12	13	13	12	9	8
Carolina UVI	9	11	13	13	14	13	12	13	13	12	9	8
San Juan UVI	9	11	13	13	14	13	12	13	13	12	9	8
Bayamon UVI	9	11	13	13	14	13	13	13	13	12	9	8
Pastos	9	11	13	14	14	13	13	13	14	12	10	9
Ponce UVI	9	11	13	14	14	13	13	13	14	12	10	9