Last updated: August 1, 2025
Understanding the UV Index is essential for residents and visitors in Gardiner, United States, where the high-altitude climate often leads to increased sun exposure. With UV levels peaking at 11 around midday, awareness of the UV Index is crucial for preventing sunburn and protecting skin health. As a Dfb climate zone, Gardiner experiences distinct seasonal variations, but the UV risks remain significant, especially during the summer months. Staying informed about daily UV levels can help you enjoy the outdoors safely while minimizing long-term skin damage.
The UV Index throughout the day reveals a notable trend, starting at a calm 1 at 7:00 AM and gradually climbing to its peak of 11 during the peak afternoon hours of 1:00 PM and 2:00 PM. As the sun climbs higher in the sky, the intensity of ultraviolet radiation increases, reaching a sharp rise to 10 by noon, signaling caution for outdoor activities. After the early afternoon, the index begins to decline, drifting down to 5 by 5:00 PM and tapering off to a gentle 1 by 7:00 PM. This data highlights the importance of sun safety, particularly during the mid-day hours when UV exposure is at its strongest. Remember to wear protective clothing and sunscreen when the UV Index rises!
| 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 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 9 | 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 fluctuates, reflecting varying levels of sun exposure risk. January and February see moderate UV levels (3 and 4, respectively), requiring about 30 minutes for skin to start burning. As spring approaches, March ramps up to a high UV Index of 7, reducing burn time to 25 minutes. The risk peaks during the summer months with May and June reaching extreme levels of 11 and 12, necessitating vigilant protection with a burn time of just 10 minutes. July slightly dips to 11, while August and September maintain a very high index of 10 and 8, respectively, allowing 15 minutes before burning. As temperatures cool in October, the UV Index drops to 6 with a burn time of 25 minutes, before stabilizing at low levels in November (UV 4, 30 minutes) and December (UV 2, 45 minutes). For the best skin protection, high-risk months are April through September; visitors and residents are advised to wear sunscreen, hats, and protective clothing, especially during midday when the sun’s rays are strongest.
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 |
| Gardiner | 3 | 4 | 7 | 9 | 11 | 12 | 11 | 10 | 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 |