UV Index in Vernal, United States

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Vernal, Utah, where the unique BSk climate can lead to heightened UV exposure. As summer days unfold, knowing the UV levels helps in preventing sunburn and protecting skin health. With peak values reaching as high as 11 in the afternoon, the sun can be intense, making it imperative to take precautions. By staying informed about the UV Index, you can enjoy the beautiful outdoor activities that Vernal has to offer while safeguarding your skin against potential damage.

Hourly UV Index in Vernal

The UV Index for today shows a dramatic rise as the sun ascends into the sky. Starting at a mild 1 by 07:00, the index gradually builds, reaching 3 by 09:00 and peaking at an intense 11 at 13:00—a level where sun protection is crucial. From this pinnacle, the values start to decline, tapering off to 10 at 14:00 and then gradually decreasing through the afternoon and evening, with values of 6 at 16:00 and sliding down to 1 by 19:00. Plan your outdoor activities accordingly, and remember to 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	3	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	9	very high	15 min
16:00	6	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Vernal

Throughout the year, UV Index levels vary significantly, with high-risk months occurring from March to August. During this period, particularly in May, June, and July, the UV Index reaches its peak at 12, indicating an extreme exposure category with a burn time of just 10 minutes. To reduce the risk of harmful effects from UV radiation, visitors and residents should take extra precautions during these months, especially in late spring and summer. In contrast, the lower UV levels in January, November, and December, with a maximum index of 3, represent moderate exposure, allowing for longer burn times of 30 minutes. It is advisable for everyone to stay informed on UV levels year-round and adjust their sun protection strategies accordingly.

Monthly Maximum UV Index for Vernal, United States

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

The table above highlights how UV exposure in Vernal 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.

Vernal'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
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
Vernal	3	6	8	10	11	12	12	11	10	7	5	3
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5