Last updated: May 3, 2025
Understanding the UV Index is vital for residents of Belvedere, United States, where the climate falls within the temperate Cfa zone. With UV levels peaking at 11 around noon, being aware of these fluctuations can help you effectively prevent sunburn and protect your skin health. Given Belvedere's typical sunny days, high UV exposure becomes a significant risk, especially during the summer months. By staying informed about the UV Index, you can enjoy the outdoors safely while minimizing the long-term effects of sun damage.
The UV Index reveals a dynamic sun intensity throughout the day, peaking dramatically in the midday hours. Starting off at a mild 1 at 07:00 and 08:00, the UV Index begins to climb sharply, reaching 3 by 09:00. As the sun ascends, it escalates to 5 at 10:00 and surges to 10 by noon, marking a significant rise in solar exposure. The highlight of the day occurs at 13:00 with a staggering 11, indicating severe UV levels. Following this zenith, the index gradually dips, dropping to 9 by 15:00 and continuing downward to 2 by 18:00. Finally, as the day winds down, the UV Index returns to a low 1 by 19:00. This data underscores the importance of sun safety, particularly during those peak hours when protection is essential.
| 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 | 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 |
As the seasons change, so too does the UV Index, highlighting the importance of sun protection for both visitors and residents. January and December see moderate levels (UV Index of 4), with a burn time of 30 minutes, while February ramps up to a high level (Index 7), decreasing burn time to 25 minutes. The high-risk months are clearly defined from March through August, where the UV Index reaches extreme levels (11) in May, June, and July, requiring caution with an effective burn time of just 10 minutes. April also registers a very high rating (10) with a 15-minute burn time, and August slightly decreases to a very high level again at 10. As autumn approaches, September (UV 9) and October (UV 8) remain critical, while November drops to a high UV Index of 6. In light of these variations, it is crucial for everyone to consider applying sunscreen, wearing protective clothing, and seeking shade during peak sun hours, particularly from March to August when the risk of skin damage is significantly heightened.
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 |
| Belvedere | 4 | 7 | 9 | 10 | 11 | 11 | 11 | 10 | 9 | 8 | 6 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |