Last updated: July 2, 2025
In the heart of Presidio, United States, being aware of the UV Index is essential for safeguarding your skin against harmful ultraviolet rays. Understanding UV levels is vital for sunburn prevention and maintaining long-term skin health, especially when peak indexes can soar to an intense 12 around noon. The region's BWh climate brings about clear and sunny days, amplifying the potential for UV radiation exposure. With UV levels often reaching critical points during the day, staying informed can empower you to take necessary precautions, enjoy the sunshine safely, and protect your skin year-round.
The UV Index throughout the day presents a striking trajectory of rising intensity, peaking at 1 PM with a remarkable 13. Starting with a gentle 1 at 7 AM, the sun's rays gradually become more potent, hitting 10 at 11 AM and soaring to a critical 12 by noon. As the afternoon unfolds, the intensity remains strong, fluctuating between 12 and 9 from 1 PM to 3 PM, before gracefully tapering off. By 5 PM, the UV Index descends to 4, and as the day closes, it winds down to a soft 1 by 7 PM. Stay vigilant during those midday hours to protect your skin from the sun's fierce embrace!
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 | 10 | very high | 15 min |
12:00 | 12 | extreme | 10 min |
13:00 | 13 | extreme | 10 min |
14:00 | 12 | extreme | 10 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 |
Throughout the year, UV exposure fluctuates significantly, with high-risk months identified primarily from February to September. During these periods, the UV Index escalates to very high and extreme levels, particularly reaching a peak of 13 from April to August, where the burn time is as short as 10 minutes. Notably, March and October also display very high exposure categories, hinting at the potential for skin damage if precautions are not taken. Visitors and residents are advised to take protective measures—such as wearing sunscreen, protective clothing, and seeking shade during peak hours—to minimize the risks associated with high UV levels. In contrast, November and December present lower UV indices, categorized as high and moderate respectively, offering a safer environment for outdoor activities.
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 |
Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |
Presidio | 6 | 8 | 10 | 13 | 13 | 13 | 13 | 12 | 11 | 9 | 7 | 5 |