Last updated: May 3, 2025
Understanding the UV Index in Clark, United States, is crucial for protecting yourself and your family from the harmful effects of ultraviolet radiation. During the peak hours, particularly around noon, UV levels can soar to an alarming 8 to 9 on the scale, significantly increasing the risk of sunburn and long-term skin health issues. Given Clark's Dfa climate, which features warm summers and frigid winters, residents must be vigilant about sun exposure, especially in the summer months when the sun's rays are most intense. By keeping an eye on the UV Index, you can enjoy the outdoors safely while safeguarding your skin's health.
During the day, the UV Index experiences a notable rise, reaching its peak at 1 PM with a staggering value of 9. The morning hours start off gently, with values of 1 at 7 AM and 8 AM, slowly increasing to 3 by 9 AM. As the sun climbs higher, the intensity spikes to 6 at 11 AM and escalates to 8 at noon, before hitting the afternoon high of 9 from 1 PM to 2 PM. Post-peak, the index starts to decline, dropping to 7 by 3 PM, then tapering off to 6 at 4 PM, 4 at 5 PM, and finally returning to 1 by 7 PM. It's a reminder to take care during those midday hours when UV exposure is at its highest!
| 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 | 6 | high | 25 min |
| 12:00 | 8 | 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 | 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, the UV Index demonstrates significant seasonal changes, with the highest levels occurring from March to September. Notably, May through September presents high-risk months where the UV Index reaches levels classified as very high (9-10), with a minimum burn time of just 15 minutes. Residents and visitors should take extra precautions during these months by seeking shade, wearing protective clothing, and applying sunscreen to safeguard against skin damage. In contrast, the UV Index is much lower during January, October, and November, categorized as moderate to low, allowing for longer exposure times—30 to 45 minutes before a burn. Hence, it is advisable to stay cautious during peak months while enjoying outdoor activities, particularly in the summer months.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clark | 3 | 5 | 6 | 7 | 9 | 10 | 9 | 9 | 8 | 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 |