UV Index in Alerta, Peru

Last updated: May 3, 2025

In Alerta, Peru, staying aware of the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels helps you take proactive measures against sunburn and long-term skin damage, especially in a region where the climate leans towards the Af classification, characterized by intense sunlight and high UV exposure. With peak UV Index readings reaching 12 around midday, it’s essential for residents and visitors alike to familiarize themselves with these levels to enjoy the sun safely while protecting their skin from harmful rays.

Hourly UV Index in Alerta

The UV index throughout the day paints a striking picture of sun exposure. Starting from a mild level of 1 at 07:00, the intensity climbs steadily, reaching a noteworthy 3 by 08:00. However, it truly peaks at 10:00, hitting an impressive 12, which indicates a very high risk of harm from unprotected sun exposure. As the sun reaches its zenith between 11:00 and 12:00, the index remains at its maximum of 12 before beginning to taper off. By 13:00, it drops to 10, then further declines to 6 by 14:00. The afternoon gives way to a significant decrease, with levels falling back to 3 at 15:00 and returning to a comfortable 1 by 16:00. As the day winds down, the index dwindles to 0 by 18:00, marking a safe transition into evening. It’s essential to stay sun-smart during the peak hours, especially from 10:00 to 14:00, to enjoy the sunshine while protecting 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	7	high	25 min
10:00	10	very high	15 min
11:00	12	extreme	10 min
12:00	12	extreme	10 min
13:00	10	very high	15 min
14:00	6	high	25 min
15:00	3	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 Alerta

The UV Index in this region exhibits significant fluctuations throughout the year, with extreme levels persisting from January to April and then again in August and November. May marks a slight decrease, transitioning to a very high UV Index in June and July, where the burn time extends to 15 minutes. Visitors and residents should be particularly cautious from January through April and again in August and November, as these months pose the highest risk for UV exposure. It is advisable to apply sunscreen, wear protective clothing, and limit sun exposure during these times, especially during peak hours, to prevent skin damage.

Monthly Maximum UV Index for Alerta, Peru

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

The table above highlights how UV exposure in Alerta 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.

Alerta'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
Alerta	15	16	15	14	12	10	10	11	13	15	16	15
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