Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Gardiner, United States, where the climate can lead to significant UV exposure risks. With maximum levels peaking around midday—reaching a high of 12—it’s essential to be aware of how these UV levels can impact your skin health and increase the likelihood of sunburn. By monitoring the UV Index, you can take proactive steps to protect yourself during those sunny days typical of Gardiner's Dfb climate zone. Remember, staying informed is your best defense against the harmful effects of UV radiation!
At dawn, the UV Index starts at a mild 1 at 07:00, gradually climbing to 2 by 08:00. As the sun rises higher, it reaches 4 at 09:00 and skyrockets to 6 by 10:00. The intensity peaks at 11:00 with a strong 9, followed by an even more intense 11 at noon. The UV rays continue to surge, hitting a maximum of 12 at 13:00 and again at 14:00. A gradual decline begins in the afternoon, dropping to 10 at 15:00 and further down to 7 by 16:00. As evening approaches, the index tapers off, settling at 5 at 17:00, 3 at 18:00, and finally retreating back to a safe 1 by 19:00. Be sure to take precautions during those peak hours when the UV Index reaches its zenith!
| 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 | 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 | 7 | high | 25 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 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 |