UV Index in Alca, Peru

Last updated: June 2, 2025

In Alca, Peru, understanding the UV Index is crucial for protecting your skin and overall health. With UV levels peaking at 11 during midday, awareness can be a game changer in preventing sunburns and reducing long-term skin damage. Alca, situated in a unique ET climate zone, experiences intense sunlight, making it vital for residents and visitors alike to monitor UV exposure throughout the day. By staying informed about the UV Index, you can enjoy the beautiful surroundings of Alca while safeguarding your skin against harmful rays.

Hourly UV Index in Alca

The UV Index for the day shows a notable peak at 11:00 AM and 12:00 PM, where it reaches a high of 11, indicating extreme exposure risk. As the sun rises, the index gradually climbs, starting from a mild 1 at 7:00 AM to 5 by 9:00 AM. The intensity of UV radiation peaks sharply at 10:00 AM with a value of 9, before hitting the critical threshold at midday. Following the noontime high, there’s a gradual decline, dropping to 7 by 2:00 PM and then tapering off to 4 at 3:00 PM, and eventually falling back to 1 by 4:00 PM. The UV exposure significantly lessens after 5:00 PM, with 0 recorded from 6:00 PM onward. When planning outdoor activities, it’s essential to take precautions during peak hours to safeguard your skin!

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	11	extreme	10 min
13:00	10	very high	15 min
14:00	7	high	25 min
15:00	4	moderate	30 min
16:00	1	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