UV Index in El Alto, Peru

Last updated: July 2, 2025

Understanding the UV Index is essential for residents and visitors in El Alto, Peru, where high altitudes and a unique climate amplify sun exposure risks. As the sun rises, UV levels can soar, reaching a peak of 11 around midday, highlighting the urgent need for sunburn prevention and skin health awareness. With a BWh climate characterized by intense sunlight and clear skies, it's crucial to protect your skin, as even short exposures can lead to harmful effects. Stay informed about UV levels to safeguard your health while enjoying the beauty of El Alto!

Hourly UV Index in El Alto

At dawn, the UV Index starts at a gentle 1 by 7:00 AM, gradually rising as the sun climbs higher in the sky. By 9:00 AM, it reaches a moderate 4, urging early risers to stay vigilant. The intensity peaks at noon, hitting a scorching 11, indicating a high risk of harm from unprotected sun exposure. This peak continues until 1:00 PM, where it remains at 11 before beginning its descent. The afternoon sees a noticeable drop, with the index falling to 6 by 3:00 PM and further decreasing to 3 by 4:00 PM. As the day winds down, the UV Index drops to a safe 1 by 5:00 PM and finally falls to 0 by 7:00 PM, signaling the end of the sun's powerful rays. Stay informed and protect your skin during those peak hours!

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	2	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	9	very high	15 min
15:00	6	high	25 min
16:00	3	moderate	30 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in El Alto

The UV Index levels fluctuate significantly throughout the year, remaining in the extreme category from January to August and dropping slightly from September to December. The high-risk months for UV exposure are from January to April, where the index peaks at 16 in March. Visitors and residents should take precautions during these months, limiting sun exposure to 10 minutes to avoid sunburn. Even in June through August, the UV Index remains high, necessitating the use of sunscreen, protective clothing, and seeking shade, especially during midday hours. As the UV levels decrease into the fall and winter, individuals are still advised to stay vigilant, as mid-range UV levels persist through the end of the year.

Monthly Maximum UV Index for El Alto, Peru

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

The table above highlights how UV exposure in El Alto 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.

El Alto'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
El Alto	14	15	16	15	13	11	11	12	14	13	13	13
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