UV Index in Ulm, United States

Last updated: July 2, 2025

In Ulm, United States, staying informed about the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps you take necessary precautions, reducing the risk of sunburn and long-term skin damage. With Ulm's semi-arid climate (BSk), the area experiences varying UV exposure throughout the day, peaking between 11 AM and 2 PM. During these hours, UV Index values can reach dangerous levels of 8 to 9, making sun safety essential for residents and visitors alike. Stay vigilant and enjoy the outdoors while safeguarding your skin!

Hourly UV Index in Ulm

The UV Index throughout the day displays a fascinating progression of solar intensity. Early risers are greeted with a gentle 1 at 07:00, gradually climbing to 2 by 08:00. As the sun reaches its zenith, the index peaks at a remarkable 9 from 13:00 to 14:00, indicating a strong need for sun protection. Post-peak, it begins its descent, dropping to 4 by 17:00, and finally waning back to 1 by 19:00. This ebb and flow not only marks the sun's dominance but also serves as a timely reminder for sun safety, especially during the midday hours when the UV exposure is at its highest!

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	3	moderate	30 min
10:00	5	moderate	30 min
11:00	7	high	25 min
12:00	8	very high	15 min
13:00	9	very high	15 min
14:00	9	very high	15 min
15:00	8	very high	15 min
16:00	7	high	25 min
17:00	4	moderate	30 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Ulm

The UV Index exhibits significant seasonal changes, with the highest levels occurring from April to August. During this peak period, particularly in May and June, the UV Index reaches 10 and 9, categorized as very high, indicating a burn time of only 15 minutes. Visitors and residents should pay special attention to April through August as these months represent the highest risk for UV exposure. In contrast, January, December, and November show much lower UV levels, categorized as low or moderate, allowing for longer exposure times of 30 to 45 minutes without significant risk. It is advisable for individuals to seek shade, wear protective clothing, and apply sunscreen, particularly during the high-risk months from April to August, to minimize the chance of skin damage.

Monthly Maximum UV Index for Ulm, United States

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

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

Ulm's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Ulm	2	4	5	7	9	10	9	9	7	5	3	2
Chicago UVI	3	4	6	8	9	10	10	9	8	6	4	2
Brooklyn UVI	3	5	6	8	10	10	9	9	8	6	4	2
New York City UVI	3	5	6	8	10	10	9	9	8	6	4	2
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5