Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Saint Johnsville, United States, where the climate presents unique exposure risks. With UV levels peaking at 9 around midday, being aware of these readings can significantly aid in sunburn prevention and maintaining overall skin health. During the warmer months, when the Dfb climate can bring intense sun, knowing when to seek shade or apply sunscreen becomes essential for safeguarding yourself from harmful UV rays. Stay informed and protect your skin while enjoying the beauty of Saint Johnsville!
The UV Index today began gently at 1 at 07:00, gradually climbing to 2 by 08:00. As the sun reached its peak, the index soared to a striking 9 between 12:00 and 14:00, indicating a high risk of harm from unprotected sun exposure. Following this pinnacle, the index gradually dipped to 7 by 15:00, before tapering off to 5 at 16:00. Evening hours brought relief as the levels fell to 3 at 17:00, then 2 at 18:00, and finally settled back at 1 by 19:00. It's a reminder to stay protected during those vibrant midday moments!
| 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 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | 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 transition, the UV Index shows notable fluctuations, indicating varying levels of sun exposure risk. January and February experience moderate UV levels (3 and 4), with a burn time of 30 minutes. The risk increases sharply in March with a UV Index of 6, classified as high, reducing the safe exposure time to 25 minutes. The most critical months for UV exposure are April through September, where the Index peaks to 10 in June, denoting very high risk, with a burn time as short as 15 minutes. October sees a drop to a high UV Index of 6, while November and December return to moderate and low levels (3 and 2), allowing for longer exposure times of 30 and 45 minutes, respectively. Visitors and residents are advised to take precautions during the high-risk months—especially between April and September—by wearing sunscreen, protective clothing, and seeking shade when outdoors to minimize the risk of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Saint Johnsville | 3 | 4 | 6 | 8 | 9 | 10 | 9 | 9 | 8 | 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 |