Last updated: June 2, 2025
Understanding the UV Index is essential for residents of Andover, United States, where the climate can lead to significant sun exposure. As the UV levels rise throughout the day, especially peaking at a maximum of 10 around noon, it’s crucial to be aware of these values to prevent sunburn and ensure long-term skin health. With typical exposure risks ranging from moderate to very high, keeping track of the UV Index empowers Andover residents to take proactive steps for sun safety. Remember, a little awareness can go a long way in protecting your skin from harmful ultraviolet rays!
As the sun rises, the UV Index starts at a gentle 1 at 07:00, indicating minimal risk. By 08:00, it increases to 3, prompting a bit more awareness. The intensity builds, reaching 4 by 09:00 and then surging to 7 at 10:00. The day reaches its peak between 12:00 and 13:00, where the UV Index hits its maximum of 10, signaling a high risk for sun exposure. As the afternoon unfolds, the index begins to decline—9 at 14:00, 7 at 15:00, and then easing to 5 by 16:00. The late hours bring a gradual reduction, settling back down to 3 at 17:00, 2 at 18:00, and finally returning to 1 by 19:00. Remember to prioritize sun protection during peak hours, particularly between 11:00 and 13:00, when the risk is at its highest!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 4 | 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 |
Throughout the year, UV levels fluctuate significantly, with notable increases during the spring and summer months. High-risk months for UV exposure occur from April to August, when the UV Index reaches its peak, particularly in June at 10, indicating a very high exposure category where burn time is only 15 minutes. In contrast, the winter months of January and December present lower risks, with a UV Index of 2 and burn times of 45 minutes. As UV levels change, residents and visitors are advised to take precautions during the warmer months, such as wearing protective clothing, applying sunscreen regularly, and seeking shade during peak sun hours. In the cooler months, while the risk is lower, it's still wise to remain vigilant, particularly during midday hours when UV rays can still pose a threat.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Andover | 2 | 4 | 6 | 8 | 9 | 10 | 9 | 9 | 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 |