Last updated: July 2, 2025
In Walpole, United States, being aware of the UV Index is crucial for safeguarding your skin health under the sun. Understanding UV levels can help you effectively prevent sunburn, reduce the risk of skin cancer, and promote overall well-being. With a Dfb climate, Walpole experiences a range of UV exposure throughout the day, peaking at a UV Index of 9 during midday—an important reminder that even on cooler days, UV rays can be intense. Stay informed and protect yourself by checking the UV Index regularly!
The UV Index today presents a notable climb as the sun ascends, peaking at 9 around noon and early afternoon, signaling very high sun exposure risk. Starting gently at 1 by 7 AM, the index rises steadily, reaching 6 by 10 AM and then surging to its maximum of 9 between 12 PM and 1 PM. Early afternoon brings a slight decline to 8 at 2 PM, followed by a gradual decrease through the later hours, settling back to 1 by 7 PM. With this trajectory, it's crucial to take precautions during the peak hours of 11 AM to 1 PM, ensuring skin protection against harmful UV rays. Stay safe and enjoy the sun wisely!
| 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 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, the UV Index reveals significant fluctuations in sun exposure risk. Winter months (January and February) have moderate UV levels with an index of 3 to 4, leading to a burn time of approximately 30 minutes. Transitioning into spring, the UV Index rises sharply: March reaches a high of 6, and by April it soars to 8, signaling the start of very high risk months with a burn time reduced to 15 minutes. The summer months (May through August) maintain this high threat level, peaking at 10 in June, necessitating extra precautions for outdoor activities. As September and October approach, the UV Index decreases to 7 and 6, respectively, still indicating a high risk for 25 minutes of safe sun exposure. November and December see a return to moderate and low levels for UV exposure, with longer burn times of 30 to 45 minutes. Residents and visitors are advised to take protective measures, especially from April to August, including wearing sunscreen, protective clothing, and limiting time in direct sunlight during peak hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Walpole | 3 | 4 | 6 | 8 | 9 | 10 | 9 | 9 | 7 | 6 | 3 | 2 |
| 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 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |