UV Index in Rock Springs, United States

Last updated: June 2, 2025

In Rock Springs, United States, staying informed about the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels helps you take proactive measures against sunburn and long-term skin damage, especially during peak hours when UV radiation is at its strongest. With a BSk climate, Rock Springs typically experiences high UV exposure, particularly around midday when the index can soar to 11 or even 12, indicating an extreme risk for harm without proper protection. Being aware of this information empowers residents and visitors alike to enjoy the sun safely and make informed choices about sun protection throughout the year.

Hourly UV Index in Rock Springs

At dawn, the UV Index starts at a mild 1 at 07:00, gradually climbing to 2 by 08:00. As the sun rises higher, it reaches 4 at 09:00 and skyrockets to 6 by 10:00. The intensity peaks at 11:00 with a strong 9, followed by an even more intense 11 at noon. The UV rays continue to surge, hitting a maximum of 12 at 13:00 and again at 14:00. A gradual decline begins in the afternoon, dropping to 10 at 15:00 and further down to 7 by 16:00. As evening approaches, the index tapers off, settling at 5 at 17:00, 3 at 18:00, and finally retreating back to a safe 1 by 19:00. Be sure to take precautions during those peak hours when the UV Index reaches its zenith!

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	4	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	12	extreme	10 min
14:00	12	extreme	10 min
15:00	10	very high	15 min
16:00	7	high	25 min
17:00	5	moderate	30 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Rock Springs

The UV Index exhibits marked seasonal changes, peaking during the summer months. High-risk months are April through August, where values reach their maximum at UV Index 12, indicating an extreme exposure category with a burn time of just 10 minutes. Visitors and residents are strongly advised to take precautions during these months, including wearing sunscreen, protective clothing, and seeking shade, especially during midday hours. Conversely, from November to March, the UV Index generally remains moderate to high, with the lowest values occurring in December. It's essential to stay vigilant year-round, as UV radiation can still pose risks even during the cooler months.

Monthly Maximum UV Index for Rock Springs, United States

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

The table above highlights how UV exposure in Rock Springs 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.

Rock Springs'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
Rock Springs	4	6	7	10	11	12	12	11	9	7	5	3
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5