UV Index in Union, Paraguay

Last updated: July 2, 2025

Understanding the UV Index in Union, Paraguay, is crucial for maintaining your skin health and preventing sunburn. With the region’s Cfa climate, which features warm summers and ample sunshine, being aware of daily UV levels can help you take proactive steps to protect yourself during peak hours. Between 10 AM and 2 PM, the UV Index often peaks, reaching levels as high as 7, indicating a high risk of harm from unprotected sun exposure. Staying informed not only safeguards your skin but also promotes overall well-being in this sunny locale.

Hourly UV Index in Union

The UV Index reveals an early morning reprieve, starting at a gentle 1 at 7:00 AM and remaining low through 9:00 AM. However, as the sun climbs, intensity increases sharply, peaking at a 7 around noon, signaling the most potent UV exposure of the day. The early afternoon maintains a respectable UV level of 6 at 1:00 PM before gradually tapering off. By mid-afternoon, it drops to 4, then swiftly declines to 1 by 4:00 PM, and finally settles at 0 by 6:00 PM, marking the day's end for UV concern. This hourly trend underscores the importance of sun safety during peak hours, especially between 10 AM and 2 PM.

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	1	low	45 min
09:00	3	moderate	30 min
10:00	5	moderate	30 min
11:00	6	high	25 min
12:00	7	high	25 min
13:00	6	high	25 min
14:00	4	moderate	30 min
15:00	2	low	45 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 Union

Throughout the year, the UV Index exhibits significant seasonal changes, with high-risk months primarily occurring during the late fall and winter, specifically from October to March, where the index reaches extreme levels (13-15) and a burn time of just 10 minutes. As we transition into spring and summer, UV exposure decreases to high levels in May and June (7-8) and allows for longer burn times of 25 minutes, though still caution is warranted. August and September remain critical, returning to very high levels with a burn time of 15 minutes. Visitors and residents should take precautions year-round, especially during the extreme months by wearing protective clothing, applying sunscreen regularly, and avoiding direct sun exposure during peak hours to mitigate the risks of harmful UV radiation.

Monthly Maximum UV Index for Union, Paraguay

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

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

Union's solar exposure compared to other cities in Paraguay. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Lambare UVI	15	14	13	10	7	5	6	8	10	13	14	15
Capiata UVI	15	14	13	10	7	5	6	8	10	13	14	15
San Lorenzo UVI	15	14	13	10	7	5	6	8	10	13	14	15
Asuncion UVI	15	14	13	10	7	5	6	8	10	13	14	15
Ciudad del Este UVI	15	15	13	10	7	5	6	8	10	13	15	14
Union	15	14	13	11	7	6	7	8	10	13	14	15