Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Descanso, where the Csa climate brings warm, sunny days that can increase exposure to harmful ultraviolet radiation. Being aware of daily UV levels helps in preventing sunburns and protecting your overall skin health, especially during peak hours when the index can soar to 12 between noon and 1 PM. The risk of UV damage is heightened in this beautiful region, making it essential to stay informed and take appropriate precautions to enjoy the outdoors safely.
As the sun rises, the UV Index begins its gradual ascent, peaking dramatically at 12:00 PM with a striking score of 12—a clear indication of intense midday sun. Starting from a low 1 at 7:00 AM, the index swiftly climbs, reaching 10 by 11:00 AM, suggesting that sun protection is essential. The afternoon sees a slight drop, with the index falling to 9 at 3:00 PM, but remains elevated enough to warrant caution. As the day winds down, the UV Index dips back to a safer 1 by 7:00 PM, allowing for a more relaxed outdoor experience. Remember to protect yourself during those peak hours, especially between 10:00 AM and 2:00 PM, when the sun is at its 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 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, seasonal changes in UV exposure can significantly impact both visitors and residents. From January to February, the UV Index rises from 5 (moderate) to 7 (high), shortening burn time to 25 minutes. As spring arrives, March to April sees a sharp increase, with the index reaching 9 (very high), resulting in a burn time of just 15 minutes, and climbing to 11 (extreme) in April. The summer months of May through August maintain an extreme rating of 12, with a minimal burn time of only 10 minutes. As September rolls in, the index slightly declines to 11, but remains in the extreme category. In October, UV levels decrease to 8 (very high), extending burn time back to 15 minutes, while November and December showcase a return to moderate exposure with indices of 5 and 4, and burn times of 30 minutes. Visitors and residents are advised to take precautionary measures during the high-risk months, particularly from March through October, by seeking shade, wearing protective clothing, and applying sunscreen frequently to minimize the risks associated with UV 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 |
| Descanso | 5 | 7 | 9 | 11 | 12 | 12 | 12 | 12 | 11 | 8 | 5 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |