Last updated: July 2, 2025
In Oljato-Monument Valley, understanding the UV Index is crucial for maintaining skin health and preventing sunburns. This stunning region, characterized by its semi-arid BSk climate, experiences significant UV exposure, particularly during midday when values can soar as high as 12. Being aware of the UV levels throughout the day helps residents and visitors alike take appropriate precautions to enjoy the outdoors safely while minimizing the risks associated with high sun exposure. Stay informed and protect yourself under the vast blue skies of this iconic landscape!
The UV Index throughout the day presents a fascinating journey of sun intensity. Beginning with a gentle rise, the index starts at a mere 1 at 07:00. As the morning unfolds, it climbs steadily, reaching 3 by 09:00. The sun's power peaks dramatically at 12:00, hitting a blistering 11, just before hitting its apex of 12 at 13:00. After this zenith, the intensity begins to wane, descending to 10 by 15:00 and gradually tapering off to 5 by 17:00. The evening sees a return to softer sunlight, with the index dropping back to 1 by 19:00. Be sure to protect yourself during those peak hours when the sun fires up the scale!
| 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 | 6 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal changes, with the highest levels typically occurring from April to August. During this period, the UV Index peaks at 12, indicating an extreme risk of harm from unprotected sun exposure, with a critical burn time of only 10 minutes. Consequently, March and September also represent high-risk months, with UV Index readings of 8 and 10, respectively, necessitating increased caution. As such, visitors and residents should prioritize sun protection strategies during these months—such as wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours. Conversely, the winter months, particularly January, November, and December, feature lower UV levels categorized as moderate, allowing for relatively safer sun exposure, albeit still with care.
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 |
| Oljato-Monument Valley | 4 | 6 | 8 | 11 | 12 | 12 | 12 | 11 | 10 | 7 | 5 | 3 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |