Last updated: August 1, 2025
Understanding the UV Index is crucial for residents of Holden, United States, where the Cfa climate brings warm summers and increased sun exposure. Being aware of UV levels helps in preventing sunburn and protecting your skin health. With UV Index readings peaking at 10 around noon, knowing when to seek shade or wear protective gear can make a significant difference in your long-term skin safety. Whether you're enjoying outdoor activities or simply soaking up the sun, staying informed about UV risks is essential for a healthy, fun-loving lifestyle in Holden.
Throughout the day, the UV Index exhibits a remarkable rise, peaking at 10 between 12:00 PM and 2:00 PM, indicating a high risk of harm from unprotected sun exposure. Starting the morning at a mere 1 at 7:00 AM, the index steadily climbs as the sun ascends, hitting 5 by 10:00 AM and rapidly accelerating to 8 by 11:00 AM. After reaching its zenith at noon, the readings gradually decline through the afternoon, dropping to 4 by 5:00 PM and falling further to 1 by 7:00 PM. It's clear that careful sun protection is essential during the midday hours when the sun's strength is at its most intense.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, seasonal UV changes reflect a pattern of increasing intensity from winter to summer and a decline toward winter again. High-risk months occur from March to August, peaking in June and July when the UV Index reaches an extreme level of 11, with a burn time of just 10 minutes. During these months, residents and visitors should take extra precautions, such as seeking shade, wearing protective clothing, and applying sunscreen regularly, especially between 10 a.m. and 4 p.m. As the fall approaches, UV levels gradually decrease, but caution should still be exercised in September and early October when UV values remain elevated. Overall, ensuring proper skin protection is crucial during the high-risk periods to mitigate the dangers of UV exposure.
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 |
| Holden | 3 | 5 | 6 | 9 | 10 | 11 | 11 | 10 | 9 | 6 | 4 | 3 |
| 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 |