Last updated: July 2, 2025
In Alva, United States, understanding the UV Index is essential for protecting your skin from harmful ultraviolet rays. With peak values soaring to 12 during the summer months, awareness of UV levels can significantly reduce your risk of sunburn and long-term skin health issues. Alva's Cfa climate offers ample sunshine, making it crucial to regularly check the UV index and take appropriate precautions—especially during midday when the sun's intensity is at its highest. Stay informed and keep your skin safe while enjoying the great outdoors!
The UV Index throughout the day reveals a striking pattern of sun intensity. Starting the morning at a low level of 1 at 07:00 and 08:00, the sun gains strength as the day advances. By 10:00, it reaches a moderate 5, and the real heat kicks in at 12:00, peaking at an impressive 10. The intensity escalates further, hitting a maximum of 12 from 13:00 to 14:00, indicating a significant risk of harm from unprotected sun exposure. As the afternoon wanes, the index gradually decreases to 7 by 16:00, before tapering off to 4 at 17:00, and finally returning to a mild 1 by 19:00. This data serves as a reminder to stay sun-safe during those peak hours when the UV Index soars!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | 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 | 12 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, seasonal changes in UV exposure reflect significant shifts in the UV Index. From January to March, the UV Index rises from a high level of 6 to a very high 10, indicating a growing risk for skin damage. The months of April through September present the most critical danger, characterized by an extreme UV Index of 12, where the burn time diminishes to just 10 minutes. Following this peak, October sees a drop to 10 (very high), before conditions moderate in November and December, with indexes falling to 7 and 5, respectively. Visitors and residents are advised to take precautions during high-risk months, particularly from April to September. It is essential to limit sun exposure, wear protective clothing, apply sunscreen regularly, and seek shade to safeguard against skin damage during these periods of heightened UV intensity.
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 |
| Alva | 6 | 9 | 10 | 12 | 12 | 12 | 12 | 12 | 11 | 10 | 7 | 5 |