UV Index in Thousand Oaks, United States

Last updated: July 2, 2025

In Thousand Oaks, understanding the UV Index is essential for safeguarding your skin and health. With the area's Csb climate providing ample sunshine, awareness of ultraviolet radiation levels can help prevent sunburn and long-term skin damage. During peak hours, particularly between 11:00 AM and 1:00 PM, the UV Index can soar to hazardous levels (reaching as high as 12), making it crucial to stay informed and protected. By keeping an eye on this daily measure, you can enjoy the beautiful California sun while minimizing health risks associated with UV exposure.

Hourly UV Index in Thousand Oaks

The UV Index throughout the day showcases a dynamic pattern, beginning with a mild level of 1 at 7:00 AM and gradually climbing to a striking peak of 12 by 1:00 PM. This midday maximum indicates a high risk for unprotected skin, urging caution as UV radiation is particularly intense. As the afternoon unfolds, the index gradually decreases, dropping to 9 at 3:00 PM, and continues to decline until it returns to a safe 1 by 7:00 PM. Between 11:00 AM and 2:00 PM, when the index hovers around 11 to 12, it's essential to seek shade or apply sunscreen for optimal protection. Overall, this UVI data emphasizes the importance of being mindful of UV exposure, especially during the 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.
TimeUVICategoryTime to Burn
07:001low45 min
08:002low45 min
09:004moderate30 min
10:007high25 min
11:009very high15 min
12:0011extreme10 min
13:0012extreme10 min
14:0011extreme10 min
15:009very high15 min
16:006high25 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Thousand Oaks

Throughout the year, the UV Index demonstrates notable seasonal changes, with the most intense exposure occurring from April to August. During these months, the UV Index reaches extreme levels (10-12), significantly reducing the burn time to just 10 minutes. March and September also pose risks with very high levels (8-10), allowing for a burn time of only 15 minutes. Consequently, February and October present high levels (6-7), where protective measures are still advised with adjusted burn times of 25 minutes. Residents and visitors should exercise caution and protect their skin, especially during the high-risk months of April through August, by using sunscreen, wearing protective clothing, and limiting sun exposure during peak hours.

Monthly Maximum UV Index for Thousand Oaks, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Thousand Oaks. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec46810111112119754
Data source: Statistical UV Index data for Thousand Oaks, 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 Thousand Oaks UV Index with Other United States Cities

The table above highlights how UV exposure in Thousand Oaks 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.
Thousand Oaks's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Chicago UVI34689101098642
Brooklyn UVI35681010998642
New York City UVI35681010998642
Los Angeles UVI46891011111010754
Thousand Oaks468101111121110754
Houston UVI589111112121110975