UV Index in Silverthorne, United States

Last updated: July 2, 2025

In Silverthorne, United States, being aware of the UV Index is crucial for protecting your skin and ensuring long-term health. Understanding UV levels helps you prevent sunburn, which can lead to more serious skin issues over time. With a Dfc climate, Silverthorne experiences notable changes in UV exposure throughout the day, peaking at a dangerous level of 13 around 1 PM. By staying informed about the UV Index, you can enjoy your time outdoors while safeguarding your skin against harmful rays.

Hourly UV Index in Silverthorne

Throughout the day, the UV Index experiences a dynamic shift, peaking at an impressive 13 between 1 PM and 2 PM, indicating a high risk of harm from unprotected sun exposure. The morning starts gently, with a UV Index of 1 at 7 AM, gradually rising to 4 by 9 AM. As the sun inches higher, the intensity increases sharply, reaching 10 by 11 AM and soaring to 12 by noon. Post-peak, the index begins to decline, dropping to 10 at 3 PM, before settling back to a mild 2 by 6 PM. This clear progression emphasizes the importance of sun protection during the midday hours when the UV Index is at its highest. Enjoy the sunshine, but remember to stay safe! ☀️

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	7	high	25 min
11:00	10	very high	15 min
12:00	12	extreme	10 min
13:00	13	extreme	10 min
14:00	12	extreme	10 min
15:00	10	very high	15 min
16:00	7	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 Silverthorne

Throughout the year, UV exposure levels fluctuate significantly, with high-risk months typically occurring from March through September. During these months, the UV Index peaks, reaching extreme levels of 12 to 14 in April, May, June, and July, where the recommended burn time is as little as 10 minutes. Conversely, the UV Index remains lower during the winter months, with January and December registering a moderate Index of 4, allowing for a safer burn time of 30 minutes. Visitors and residents are advised to exercise caution and protection, particularly between March and September, by wearing sunscreen, protective clothing, and sunglasses during peak sunlight hours to minimize the risk of sunburn and long-term skin damage.

Monthly Maximum UV Index for Silverthorne, United States

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

The table above highlights how UV exposure in Silverthorne 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.

Silverthorne'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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5
Silverthorne	4	6	9	12	13	14	13	12	11	7	5	4