Last updated: May 3, 2025
Understanding the UV Index is essential for residents and visitors in McCall, United States, as it plays a crucial role in sunburn prevention and overall skin health. With the area's Dsb climate and varying UV exposure throughout the day, awareness of these levels helps you make informed decisions about sun protection. As the index peaks at 11 around midday, knowing when to seek shade or apply sunscreen can significantly reduce your risk of harmful skin damage—especially during the summer months when UV rays can be particularly intense. Stay informed and enjoy the beautiful outdoors while protecting your skin!
The UV Index throughout the day showcases notable fluctuations, reflecting the movement of the sun and the intensity of sunlight exposure. Early in the morning, from 07:00 to 09:00, the index remains relatively low, peaking at 3 by 09:00. However, as the day progresses, the UV index escalates dramatically—10:00 sees a rise to 5, followed by a striking surge to 10 at 12:00, reaching its zenith of 11 at 13:00. This intense hour of UV exposure is matched by an equally potent 14:00 before tapering off sharply in the afternoon. By 15:00, the index dips to 10, then declines steadily, concluding the day at a more moderate 2 by 19:00. As a reminder, the highest UV exposure occurs around midday; thus, extra caution is advised during these hours for optimal skin protection!
| 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 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 11 | 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 | 2 | low | 45 min |
Throughout the year, seasonal UV changes highlight significant fluctuations in the UV Index, impacting sun safety guidelines. The months of May to July are particularly high-risk, with an extreme UV Index of 11, indicating an urgent need for protective measures as burn times drop to just 10 minutes. April also poses a risk with a very high index of 8, while August and September continue to maintain elevated levels. Conversely, the winter months—January, February, and November—feature moderate levels, allowing for safer outdoor activities, although October shows a notable shift with a high UV index. Visitors and residents should exercise caution and ensure proper sun protection during high-risk months, particularly by wearing sunscreen, hats, and protective clothing, to prevent skin damage from increased UV exposure.
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 |
| McCall | 3 | 4 | 7 | 8 | 11 | 11 | 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 |