Last updated: May 3, 2025
In Salem, understanding the UV Index is crucial for protecting your skin from harmful sun exposure. With peak levels reaching as high as 12 during midday, awareness of UV levels can make a significant difference in preventing sunburn and maintaining long-term skin health. Salem's BWk climate brings sunny days, making it essential for residents and visitors alike to be informed about potential risks. By keeping an eye on the UV Index, you can enjoy the beautiful outdoors while safeguarding your skin against the sun’s damaging effects.
The UV Index rises steadily throughout the morning, starting at a modest 1 at 7:00 AM and peaking at an intense 12 between noon and 1:00 PM. This indicates an increased risk of harm from unprotected sun exposure during these midday hours. As the afternoon progresses, the index begins to decline, dropping to 9 by 3:00 PM, then further to 2 by 6:00 PM, suggesting that the sun's intensity is easing as the day transitions into evening. For those planning outdoor activities, it’s crucial to stay protected during the hours when the UV Index is above 6, particularly from 10:00 AM to 2:00 PM when the risk is at its highest.
| 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 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 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 |
Throughout the year, UV radiation levels fluctuate significantly, with the highest risk occurring between March and September. During this period, the UV Index reaches extreme levels, peaking at 13 in June, where the recommended burn time is just 10 minutes. April, May, July, August, and September also maintain extreme ratings, advising caution and proactive sun protection strategies. February and October present high to very high UV conditions, with slightly longer burn times of 25 and 15 minutes, respectively. January and December see a reduction to moderate UV levels, allowing for a more relaxed approach to sun exposure. Visitors and residents should stay vigilant, applying sunscreen, wearing protective clothing, and seeking shade during peak sun hours, particularly from March through September.
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 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |
| Salem | 5 | 7 | 10 | 12 | 12 | 13 | 12 | 12 | 11 | 8 | 6 | 5 |