Last updated: May 3, 2025
Understanding the UV Index is essential for residents and visitors in Mount Pleasant, United States, where sun exposure can pose significant health risks. With a climate classified as Cfa, warm summers and ample sunlight make it crucial to be aware of UV levels to prevent sunburn and protect skin health. For instance, the UV Index peaks at 11 during midday hours, indicating a very high risk of harm from unprotected sun exposure. By staying informed about these levels, you can enjoy the beautiful outdoors while safeguarding your skin against potential damage.
At 07:00, the UV Index starts at a mild 1, perfect for an early morning stroll. As the day unfolds, the intensity gradually climbs, reaching 2 by 08:00 and 3 by 09:00. The sun packs a punch at 10:00, soaring to a 6. By 11:00, it hits a significant 8, warning us to take precautions. The peak intensity arrives at 12:00, where the UV Index surges to a blistering 11. It maintains this level until 14:00, demanding attention and protection from the sun's rays. A gradual decline starts at 15:00, lowering to 9, followed by 6 at 16:00. As evening approaches, the numbers drop further to 4 at 17:00, a gentle reminder of the sun's retreat. Finally, by 18:00, it's down to 2, and by 19:00, we're back to a comfortable 1, marking the end of a sun-drenched day. ✨
| 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 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 9 | 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, ultraviolet (UV) exposure fluctuates significantly, necessitating awareness among residents and visitors. From January to April, the UV Index begins to rise, starting at a moderate level of 4 and peaking at 10 in April, indicating a shift to very high exposure. The months of May through August present the highest risk, with the UV Index consistently at an extreme 11, where the burn time reduces to just 10 minutes. Following this peak, September and October see a slight decrease, with the UV Index returning to 10 and 8, respectively, both still classified as very high. By November and December, levels drop back down to high and moderate categories with indices of 6 and 4, allowing for safer outdoor activities but still requiring caution. Residents and visitors should take protective measures, especially during the high-risk months of May to August, by wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours to minimize the risk of UV damage.
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 |
| Mount Pleasant | 4 | 6 | 8 | 10 | 11 | 11 | 11 | 11 | 10 | 8 | 6 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |