Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of North Windham, United States, where the changing seasons can influence sun exposure. As a climate zone Dfb, the area experiences significant UV radiation, particularly during peak hours when levels can reach as high as 10 around noon. Being aware of these UV levels is essential for sunburn prevention and maintaining overall skin health, especially during the summer months when outdoor activities are more frequent. With the potential for skin damage increasing sharply as UV levels rise, staying informed can help you enjoy the sun safely and protect your skin.
The UV Index reaches its peak during the midday hours, showcasing a vibrant sun's intensity. Starting with a gentle 1 at 07:00, it gradually escalates to 3 by 08:00. As the day progresses, the index soars to 5 at 09:00, hitting 7 by 10:00. The real highlight occurs between 11:00 and 13:00, when it peaks at an impressive 10, urging everyone to take caution. Following this, the index begins a slow descent, dropping to 9 at 14:00 and gradually declining to 5 by 16:00. By 18:00, it reduces to 2, finally settling back at 1 by 19:00. This hourly data highlights the importance of sun safety during the peak hours of the day.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 9 | 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 experiences notable fluctuations, influencing both visitor and resident safety. January and December boast a low UV Index of 2, allowing for extended exposure times of 45 minutes without significant risk. However, as we move into spring with February and March, the UV Index rises to 4 and 5 respectively, indicating a moderate risk with a burn time of just 30 minutes. The high-risk months arrive in April through August, with peak values of 9 and 10 during May and June, categorizing the exposure as very high and shortening safe sun exposure to as little as 15 minutes. September sees a slight decrease to a high index of 7, while October and November return to moderate levels. Visitors and residents should take precautionary measures during the higher UV months by seeking shade, wearing protective clothing, and using sunscreen regularly to minimize skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| North Windham | 2 | 4 | 5 | 7 | 9 | 10 | 9 | 8 | 7 | 5 | 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 |