UV Index in Puente Alto, Chile

Last updated: May 3, 2025

Understanding the UV Index in Puente Alto, Chile is essential for protecting yourself from harmful ultraviolet radiation. With its Csb climate, this region experiences fluctuating UV levels throughout the day, peaking around midday. Awareness of these levels is crucial to prevent sunburn and maintain skin health, especially during the summer months when UV exposure risks increase significantly. By being informed about the UV Index—ranging from a safe 1 early in the morning to a high of 6 during peak hours—you can take proactive measures to enjoy the sun responsibly, safeguarding your skin from potential damage.

Hourly UV Index in Puente Alto

As the sun rises, the UV Index remains low at 0 by 07:00, perfect for early risers. However, a gentle increase begins at 08:00, reaching 1 by the late morning. The real action starts at 10:00, when the index climbs to 3, peaking at 6 from 12:00 to 13:00. This midday high signals the time to take precautions, as the sun's rays are strongest. Despite a gradual decrease to 4 by 14:00, the UV intensity remains noticeable, dropping further to 3 at 15:00. By 16:00, it retreats to 2, then diminishes swiftly to 1 at 17:00 and back to 0 by 18:00. As night falls, the UV threat dissipates, marking a safe end to a day under the sun.

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	0	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	3	moderate	30 min
11:00	5	moderate	30 min
12:00	6	high	25 min
13:00	6	high	25 min
14:00	4	moderate	30 min
15:00	3	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 Puente Alto

The UV Index demonstrates significant seasonal changes, with extreme readings from January to March and again in September through November, indicating a heightened risk for sunburn during these months. Notably, January and December both reach an index of 15, while February and November register 14, making them the highest-risk months. As the year progresses, April and August are classified as very high (UV index 8), while May and July are categorized as high (UV index 6). During periods of extreme and very high exposure, burn times are dangerously short—only 10 to 15 minutes—which underscores the necessity for vigilant sun protection. Residents and visitors are strongly advised to adopt protective measures, including wearing sunscreen, hats, and UV-blocking clothing, particularly during the peak months to mitigate the risks associated with high UV exposure.

Monthly Maximum UV Index for Puente Alto, Chile

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Puente 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 Puente 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 Puente Alto UV Index with Other Chile Cities

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

Puente Alto's solar exposure compared to other cities in Chile. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Santiago UVI	14	12	11	7	5	3	4	6	8	11	12	14
Valparaiso UVI	14	12	11	8	5	4	4	6	8	11	12	14
Vina del Mar UVI	14	12	11	8	5	4	4	6	8	11	12	14
Puente Alto	15	14	12	8	6	4	6	8	11	12	14	15
Antofagasta UVI	15	15	13	10	8	6	7	9	11	14	15	15