Last updated: June 2, 2025
In Chatsworth, United States, being aware of the UV Index is essential for maintaining skin health and preventing sunburn. Understanding UV levels helps residents and visitors alike make informed choices about outdoor activities, especially during peak sunlight hours when UV radiation can be at its highest. With a Dfa climate, Chatsworth experiences warm summers where UV exposure can escalate quickly – reaching a maximum of 11 around midday. By keeping an eye on the UV Index, you can protect your skin and enjoy the beautiful California sun safely!
As the sun rises, the UV Index begins its gradual ascent, starting at a gentle 1 at 07:00. By 08:00, it climbs to 2, signaling a mild increase in UV exposure. The intensity peaks dramatically at 12:00, where it reaches a striking 10, indicating a high risk for harm from unprotected sun exposure. 13:00 sees an even higher point of 11, making it crucial for sun safety measures. As the afternoon progresses, the index begins to descend—falling to 8 by 15:00 and tapering off to a more manageable 3 by 17:00. The day concludes with a soft decline, dropping back to 1 by 19:00. This hourly UVI data underscores the importance of protecting skin during the midday sun to prevent damage and ensure safety.
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 | 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 | 8 | very high | 15 min |
16:00 | 6 | high | 25 min |
17:00 | 3 | moderate | 30 min |
18:00 | 2 | low | 45 min |
19:00 | 1 | low | 45 min |
As the seasons change, so do the UV Index levels, significantly impacting sun exposure risk. High-risk months occur from April through September, with the peak UV Index reaching 11 in June, categorized as extreme, and a burn time of just 10 minutes. In contrast, January and December present the lowest risk, with UV Index levels of 3 and 2, respectively. Visitors and residents should be particularly cautious during the very high to extreme UV periods; wearing sunscreen, seeking shade, and wearing protective clothing are essential measures to minimize the risk of sunburn and long-term skin damage. Regularly checking the daily UV Index will help ensure safe outdoor activities throughout the year.
UV Risk Categories
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 |
Chatsworth | 3 | 5 | 6 | 9 | 10 | 11 | 10 | 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 |