Last updated: June 2, 2025
Understanding the UV Index is crucial for the residents of Star Valley Ranch, United States, as it significantly impacts skin health and sunburn prevention. With a typical climate characterized by cool summers and increased solar intensity, awareness of UV levels can help you protect yourself during peak exposure times. For instance, in the summertime, UV levels can reach a maximum of 12, indicating a high risk for harm from unprotected sun exposure. Staying informed about the UV Index empowers you to enjoy the beautiful outdoors while safeguarding your skin from potential damage.
As the sun rises, the UV Index gradually climbs, starting at a mild 1 at 7:00 AM. By 9:00 AM, it picks up pace, reaching 4, and then surges to a peak intensity of 12 at 1:00 PM, marking the sun's zenith. The afternoon sees a slight decline, with values of 11 at 2:00 PM and 10 at 3:00 PM, before dropping to 5 by 5:00 PM. As the day winds down, the UV Index returns to a safe 1 by 7:00 PM, reminding us to stay vigilant about sun protection during those midday hours when the rays are strongest!
| 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 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
The UV Index exhibits significant seasonal changes, with notable increases from early spring through summer. March marks the transition to a very high risk of UV exposure, peaking in May and June with an extreme classification where the burn time is as little as 10 minutes. July and August maintain this intensity, emphasizing the importance of sun protection. Visitors and residents should stay vigilant during these high-risk months of March to August, taking precautions such as wearing sunscreen, protective clothing, and seeking shade to minimize the risk of skin damage. As the seasons shift into October and November, UV risks decrease, transitioning back to moderate levels with longer burn times, providing 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 |
| Star Valley Ranch | 3 | 5 | 8 | 10 | 11 | 12 | 11 | 11 | 9 | 6 | 4 | 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 |