Last updated: May 3, 2025
Staying informed about the UV Index in Danville, United States is essential for maintaining skin health and preventing sunburn, particularly during the peak hours of sunlight. Understanding the daily UV levels helps residents and visitors alike take necessary precautions, especially as Danville's Cfa climate presents unique exposure risks with significant UV radiation during summer months. With UV Index values soaring to 11 around midday, it’s crucial to equip yourself with sun protection strategies to enjoy the outdoors safely while safeguarding your skin against harmful effects.
As the sun rises, the UV Index makes its initial climb, starting at a mild 1 by 7:00 AM, perfect for early morning outings. By 9:00 AM, it reaches a cautious 4, signaling a need for light protection. The day really heats up at 11:00 AM, where it peaks at a striking 9, and it hits its maximum intensity of 11 at 1:00 PM. During these hours, sunscreen is a must if you plan to be outdoors! As afternoon approaches, the intensity begins to wane, with the index tapering back to 7 by 3:00 PM and dropping to a relaxed 1 by 6:00 PM, perfect for evening strolls. Remember, while UV rays are their strongest in the early afternoon, they remain a factor throughout the day—stay safe in the sun!
| 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 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences significant fluctuations, with the highest risk months occurring from March to August. These months showcase increasingly extreme levels of UV radiation, peaking at an index of 11 in May, June, and July, where the burn time is critically short at just 10 minutes. February also marks the beginning of heightened risk with a UV Index of 7, while April reaches a very high index of 10. As visitors and residents enjoy outdoor activities, it is crucial to remain vigilant during these months. To protect against harmful UV exposure, it is advised to wear sunscreen, seek shade, and don protective clothing, especially during peak sun hours. Be mindful that even in months with a moderate UV Index, such as January, November, and December, sun protection is still necessary to maintain skin health.
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 |
| Danville | 4 | 7 | 8 | 10 | 11 | 11 | 11 | 10 | 9 | 7 | 5 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |