UV Index in Mount Shasta, United States

Last updated: May 3, 2025

Understanding the UV Index in Mount Shasta is crucial for protecting your skin and overall health. With UV levels peaking at 11 around noon, awareness of these readings can help you take necessary precautions against sunburn and long-term skin damage. Located in a Csb climate zone, Mount Shasta's unique weather patterns can lead to fluctuating exposure risks throughout the day. By monitoring the UV Index, you can enjoy the area's beautiful outdoor activities while safeguarding your well-being under the sun.

Hourly UV Index in Mount Shasta

As the sun rises, the UV Index gradually climbs, starting at a mild 1 at 07:00. By 09:00, it reaches a moderate 4, signaling a need for some sun protection. The intensity peaks at 12:00 with a powerful 10, indicating strong sunlight. The highest point, 11 at 13:00, urges sun safety awareness as the afternoon sun bears down. However, relief comes as the sun begins to set; the index dips to 9 by 15:00, then gradually decreases to 4 at 17:00, and finally back to a safe 1 by 19:00. Throughout the day, staying vigilant against UV exposure is key!

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	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 Mount Shasta

The UV Index exhibits significant seasonal variation, with high-risk months typically occurring from March to August. During this period, peak UV Index values reach 11 in May and June, categorizing these months as extreme, where sensitive individuals can burn in just 10 minutes. March and April see very high levels (UV Index 8 and 9), reducing safe exposure times to 15 minutes. As summer transitions to fall, September and October remain relatively high at 9 and 7, respectively, allowing for burn times of 15 and 25 minutes. Conversely, the winter months of January, February, November, and December report moderate levels (UV Index 3 to 5), with burn times of 30 minutes. Visitors and residents should take these variations into account, especially during high-risk months; protection against UV exposure—such as wearing sunscreen, hats, and protective clothing—is strongly recommended to minimize skin damage.

Monthly Maximum UV Index for Mount Shasta, United States

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

The table above highlights how UV exposure in Mount Shasta 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.

Mount Shasta'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
Mount Shasta	3	5	8	9	11	12	11	10	9	7	4	3
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