UV Index in Alca, Peru

Last updated: August 1, 2025

In Alca, Peru, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn. With its unique ET climate, Alca experiences significant UV exposure, especially during peak daylight hours. Understanding the varying levels of UV radiation throughout the day can empower residents and visitors to take necessary precautions, particularly when the index soars to a high of 13 around noon. By staying informed, you can enjoy the beautiful outdoor environment while protecting your skin from the harmful effects of ultraviolet rays.

Hourly UV Index in Alca

The UV Index data paints a vivid picture of a sun-drenched day. Starting at a refreshing 1 by 7:00 AM, the warmth gradually climbs, hitting 3 by 8:00 AM. As the sun reaches its peak, the intensity surges dramatically, peaking at a striking 13 at 12:00 PM—the perfect time to remember the sunscreen! The afternoon retains a robust 12 at 1:00 PM, before tapering off to a more manageable 5 by 3:00 PM. By the evening, the UV levels drop significantly, falling to 0 by 6:00 PM. Remember, while midday beckons with its vibrant rays, heed the warning of those powerful UV levels!

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	4	moderate	30 min
09:00	7	high	25 min
10:00	12	extreme	10 min
11:00	15	extreme	10 min
12:00	15	extreme	10 min
13:00	13	extreme	10 min
14:00	10	very high	15 min
15:00	5	moderate	30 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Alca

The UV Index remains extremely high throughout the year, with values peaking in the early months. From January to April, the UV Index consistently hovers between 20 and 22, indicating a high-risk period for skin damage with a burn time of just 10 minutes. As the year progresses, while the UV Index lowers slightly to around 11 to 15 from June to August, it remains in the extreme category, emphasizing the ongoing need for sun protection. Notably, September through November sees a brief resurgence with values around 17 to 20. Therefore, visitors and residents alike should prioritize sun safety year-round by wearing sunscreen, protective clothing, and seeking shade, particularly during the most intense periods.

Monthly Maximum UV Index for Alca, Peru

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

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

Alca's solar exposure compared to other cities in Peru. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Callao UVI	14	14	14	12	10	9	10	11	12	13	14	13
Lima UVI	14	14	14	12	10	9	10	11	12	13	14	13
Trujillo UVI	15	15	15	14	12	11	11	11	13	14	14	14
Chiclayo UVI	14	15	15	14	13	11	11	12	15	14	14	13
Arequipa UVI	18	17	17	15	12	10	11	13	15	17	18	17
Alca	22	21	20	18	14	11	13	15	17	19	20	20