UV Index in Altania, Brazil

Last updated: July 2, 2025

In Altania, Brazil, staying informed about the UV Index is essential for protecting your skin and overall health. Understanding UV levels is crucial, as high exposure can lead to painful sunburn and long-term skin damage. With a Cfa climate, characterized by warm, humid summers, residents and visitors alike face increased risks of UV radiation, especially during midday hours when the index peaks at 7. By being aware of the UV Index, you can take proactive measures to safeguard your skin, ensuring a safe and enjoyable experience under the vibrant Brazilian sun.

Hourly UV Index in Altania

The UV Index displayed a dynamic fluctuation throughout the day, starting off at 0 at 7:00 AM, indicating no risk. As the sun rose higher, it slowly climbed to 1 by 8:00 AM and reached 2 at 9:00 AM. By mid-morning, the UV levels surged, peaking at 7 between 12:00 PM and 1:00 PM—a point where sun safety becomes crucial. As the afternoon progressed, the index dipped, settling to 6 at 2:00 PM, and then gradually declining to 4 by 3:00 PM, and finally tapering off to 1 by 5:00 PM. The day wrapped up with a return to 0 UV risk by 7:00 PM, marking a significant drop as daylight faded. Stay vigilant 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	0	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	4	moderate	30 min
11:00	5	moderate	30 min
12:00	7	high	25 min
13:00	7	high	25 min
14:00	6	high	25 min
15:00	4	moderate	30 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Altania

During the year, UV levels vary significantly, with the highest risk of exposure occurring in the winter and late fall months; notably, January, February, September, October, November, and December each present an extreme UV Index of 15, 14, or 13, suggesting a burn time of only 10 minutes. In the spring, while UV levels begin to decrease, April still reflects an extreme category with a UV Index of 11, requiring vigilant sun protection. As we transition into summer, the UV Index drops slightly with values of 6 to 9, considered high to very high, allowing for slightly longer exposure (up to 25 minutes in June and July), yet caution remains essential. Visitors and residents alike should prioritize sun safety by wearing sunscreen, hats, and protective clothing, especially during the high-risk months that feature extreme UV levels.

Monthly Maximum UV Index for Altania, Brazil

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

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

Altania's solar exposure compared to other cities in Brazil. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Rio de Janeiro UVI	15	14	13	10	7	6	7	9	11	12	13	15
Altania	15	14	13	11	8	6	7	9	11	13	14	15
Sao Paulo UVI	16	15	12	11	8	6	7	9	11	13	14	15
Belo Horizonte UVI	17	16	14	12	9	7	8	10	12	13	14	16
Salvador UVI	14	14	14	13	10	9	9	12	12	15	15	14
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13