Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Winston, United States, where sunny days are abundant yet come with hidden risks. The UV Index serves as a daily reminder of the sun's intensity, helping you to take proactive measures to prevent sunburn and protect your skin health. With typical midday UV levels soaring to 10 during the summer months, it's vital to stay informed about your local UV exposure risks. Given Winston's Csb climate, characterized by warm summers and mild conditions, being UV-aware not only enhances your outdoor enjoyment but also safeguards your long-term skin health. Stay protected and informed!
The UV Index reveals a dynamic ascent and descent throughout the day, peaking with intensity during midday. Starting at a gentle 1 at 7:00 AM, it climbs steadily, reaching 10 by 1:00 PM and maintaining this highest level until 2:00 PM. This critical window indicates significant sun exposure, and it’s essential to take precautions. As the afternoon progresses, the index begins to taper off, dropping to 8 at 3:00 PM, then gradually falling to 1 by 7:00 PM. This data highlights the importance of being sun-smart during the peak hours to minimize UV exposure risks.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 8 | 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, the UV Index varies significantly, peaking during the summer months. January and February have a moderate exposure level (UV Index 3 and 4), with a relatively longer burn time of 30 minutes. As spring approaches, March ushers in higher UV levels (6, high exposure) and a reduced burn time of 25 minutes. The months of April through August present the highest risk, with the UV Index reaching its peak at 10 during May, June, and July, all classified as very high exposure with a burn time of only 15 minutes. August and September still remain risky, with UV Index values of 9 and 8, respectively. As fall arrives, October sees a decline to a high level (UV Index 6) before dropping back to moderate in November and low in December. Visitors and residents are advised to take precautionary measures during high-risk months—especially from April to September—by wearing protective clothing, sunscreen, and seeking shade to prevent skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Winston | 3 | 4 | 6 | 8 | 10 | 10 | 10 | 9 | 8 | 6 | 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 |