Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Running Springs, United States, where the sun’s rays can be particularly intense. With a climate classified as Csa, this mountain community experiences significant variations in UV exposure, reaching highs of 12 during midday hours. Being aware of UV levels matters not just for preventing painful sunburns, but also for maintaining long-term skin health. As the UV Index rises, so too do the risks associated with unprotected sun exposure, making it essential to stay informed and proactive about sun safety in this beautiful alpine environment.
As the day unfolds, the UV Index climbs steadily, peaking at a stunning 12 around noon. Starting from a modest 1 at 7:00 AM, the intensity escalates, reaching a vital 10 by 11:00 AM. The afternoon continues with high values, with 12 sustained from 12:00 PM to 1:00 PM, before gradually tapering off. By 4:00 PM, the index drops to 6, and as evening approaches, it cools to a safe 1 by 7:00 PM. For those venturing outdoors, it’s crucial to take precautions during the peak hours from 10:00 AM to 2:00 PM, when the sun's rays are strongest.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 2 | low | 45 min |
09:00 | 5 | moderate | 30 min |
10:00 | 8 | very high | 15 min |
11:00 | 10 | very high | 15 min |
12:00 | 12 | extreme | 10 min |
13:00 | 12 | extreme | 10 min |
14:00 | 11 | extreme | 10 min |
15:00 | 9 | 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 |
The UV Index experiences significant seasonal variation, peaking between March and August when exposure levels reach extreme categories. Notably, April, May, and June have the highest readings at 11 and 12, indicating a burn time as short as 10 minutes during these months. Visitors and residents should be particularly cautious from March to August, with March and April marking the onset of these high-risk months. During this time, it is advisable to wear protective clothing, apply sunscreen frequently, and seek shade whenever possible, especially during midday hours. As fall approaches, the UV Index begins to decline, offering slightly safer conditions in October and November, yet vigilance is still recommended during these months with moderate exposure.
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 |
Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
Running Springs | 4 | 6 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 8 | 5 | 4 |
Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |