Last updated: July 2, 2025
In Tranquillity, United States, staying informed about the UV Index is essential for safeguarding your skin and overall health. Understanding UV levels can significantly aid in sunburn prevention and long-term skin care, as exposure to high levels of ultraviolet radiation can increase the risk of skin damage and related conditions. With its BSk climate, Tranquillity experiences a range of UV exposures, particularly peaking around noon when the UV Index reaches a maximum of 11. Being aware of these fluctuations empowers residents and visitors to enjoy the sun safely while minimizing risks.
The UV Index data highlights a dramatic rise in sun intensity as the day progresses. Starting early at 1 around 7:00 AM, it gradually climbs to 10 by noon, peaking at a staggering 11 at 1:00 PM. This is the moment when UV exposure becomes most concerning, emphasizing the importance of sun protection. As the afternoon unfolds, the index gracefully tapers down, dipping to 8 by 3:00 PM and further declining to 4 by 5:00 PM. By the time evening rolls in, the UV Index settles back to 1 at 7:00 PM, signaling a reprieve from the midday sun. This data can be a crucial guide for planning outdoor activities safely throughout the day.
| 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 | 6 | 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 | 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 |
The UV Index exhibits notable seasonal fluctuations, peaking during the summer months. From January to February, the UV levels are moderate (Index 4-5), allowing for a burn time of 30 minutes. However, as spring unfolds in March (Index 8) and April (Index 9), the risk escalates to very high, with burn times decreasing to 15 minutes. The intensity reaches its zenith in June (Index 12) and July (Index 11), marked as extreme—where just 10 minutes of unprotected sun exposure can lead to burns. August and September maintain high levels of risk, while October sees a slight decline to high (Index 7) with a burn time of 25 minutes. By November and December, the UV index drops back to moderate levels, allowing for safer outdoor activities with burn times returning to 30 minutes. Visitors and residents are advised to take precautionary measures during high-risk months (March through September) by wearing protective clothing, applying sunscreen, and seeking shade to minimize sun exposure and prevent sunburn.
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 |
| Tranquillity | 4 | 5 | 8 | 9 | 10 | 12 | 11 | 10 | 9 | 7 | 5 | 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 |