Last updated: May 3, 2025
In Pinnacle, United States, awareness of the UV Index is essential for protecting your skin and overall health. Understanding UV levels helps residents prevent sunburn and reduce the long-term risks of skin damage. With a Cfa climate characterized by warm summers, the sun's intensity can peak, especially between 11:00 AM and 2:00 PM, when the UV Index reaches its highest level of 10. Being informed allows residents to enjoy the outdoors safely while minimizing exposure to harmful ultraviolet radiation.
At dawn, 7:00 AM, the UV Index is a mild 1, offering a gentle start to the day. As the sun climbs higher, it steadily rises, reaching 2 by 8:00 AM and hitting 3 at 9:00 AM. However, between 10:00 AM and 1:00 PM, the intensity increases sharply, peaking at an impressive 10 from 12:00 PM to 1:00 PM—the highest level of risk. The UV Index then begins its descent, dropping to 8 at 3:00 PM, followed by a gradual decline to 4 by 5:00 PM. As evening approaches, the index wanes further, settling back down to 1 by 7:00 PM. To enjoy the sunshine while staying safe, make sure to take precautions, especially during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 8 | 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, the UV Index displays significant seasonal fluctuations that warrant attention from both visitors and residents. From January (UV Index 4, moderate exposure) to February (UV Index 6, high exposure), there is a notable increase in ultraviolet radiation, leading to higher sunburn risk. The months of March through June represent high-risk periods, with UV Index values peaking at 11 in June (extreme exposure) and maintaining levels above 8 until September. During this summer surge, burn times can dwindle to as little as 10 minutes in June. September to October shows a slight decrease, though values remain high (UV Index 9-8). Following this, November and December return to more moderate levels (UV Index 5 and 3), allowing for longer exposure times without an immediate burn risk. It is advisable for everyone to stay vigilant during the high-risk months, particularly from March to September, and to employ protective measures such as wearing sunscreen and protective clothing, especially during peak hours.
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 |
| Pinnacle | 4 | 6 | 8 | 10 | 10 | 11 | 10 | 10 | 9 | 8 | 5 | 3 |
| 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 |