Last updated: June 2, 2025
Understanding the UV Index in Alvin, United States, is crucial for maintaining your skin health and preventing sunburn. With a climate classified as Cfa, Alvin experiences a range of UV levels throughout the day, peaking around midday when the risk of overexposure is highest. For instance, during the summer months, UV levels can soar to 11 and 12, necessitating protective measures. By being aware of these fluctuations, residents can take proactive steps to safeguard their skin from harmful UV rays, ensuring a healthier and more enjoyable time outdoors.
As the sun rises, the UV Index begins its gradual ascent, starting at 1 at 07:00 and maintaining that low level through to 08:00. By 09:00, it spikes to 3, signaling that the midday sun is on its way. The intensity peaks dramatically at 12:00, soaring to a staggering 11, making this the most perilous hour for skin exposure. Just after, it reaches its zenith at 13:00 with an impressive 12 before gradually tapering off throughout the afternoon. By 15:00, the index drops to 10, and in the following hours, it descends further to 7 at 16:00 and down to a safer 2 by 18:00. As dusk approaches, the UV risk wanes, leading to a return to 1 by 19:00. Stay protected during the peak hours!
| 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 | 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 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so do the UV Index levels, significantly affecting the risk of skin damage from sun exposure. January and December have a moderate UV Index of 5, allowing for a burn time of 30 minutes. However, by February, the UV levels escalate to 8, marking the beginning of very high exposure with a reduced burn time of 15 minutes. The risk peaks in the summer months, particularly April through August, where the UV Index reaches a maximum of 12, classified as extreme, necessitating protective measures within just 10 minutes. September and October see a slight decline to very high levels of 10 and 9, respectively, while November cools to a high risk of 7 with a burn time of 25 minutes. Visitors and residents are advised to take precautions during the high-risk months of February to August, utilizing sunscreen, protective clothing, and seeking shade, particularly during peak sun hours, to minimize sun damage and maintain skin health.
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 |
| Alvin | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |