Last updated: August 1, 2025
In Tribune, United States, understanding the UV Index is crucial for protecting your skin health and preventing sunburn. With the city situated in a BSk climate zone, residents and visitors experience varying levels of UV exposure throughout the day. The UV Index peaks at 11 between noon and 1 PM, indicating a high risk for harm from unprotected sun exposure. By staying informed about daily UV levels, you can take proactive measures—like wearing sunscreen or seeking shade—to safeguard your skin from damage while enjoying the vibrant sun in Tribune.
The UV Index fluctuates significantly throughout the day, peaking at an impressive 11 from noon to 1 PM. Starting the morning with a modest value of 1 at 7 AM, the index ramps up quickly, reaching 10 by 11 AM. As the sun climbs higher, it delivers its strongest rays, making midday the most critical time for sun exposure. The intensity gradually decreases in the afternoon, dipping to 3 by 5 PM and returning to a safe 1 by 7 PM. To stay safe under the sun, be sure to take protective measures during those highest UV hours!
| 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 | 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, impacting sun safety for both visitors and residents. From January to February, the UV Index remains moderate (4-5), with a burn time of 30 minutes. As spring approaches, March marks a transition to a high UV Index of 7, and by April, it escalates to 10, signaling the start of very high risk months. The peak UV exposure occurs in May and June, reaching an extreme 11-12, where one can burn in just 10 minutes. July continues this pattern, but a slight decline begins in August (UV Index 11). By September, the UV Index drops to 9, still indicating very high risk, before settling back to high levels in October (UV Index 7). During the late fall and winter months, the index decreases to moderate levels again. Visitors and residents are strongly advised to take precautions, especially from April to August, ensuring proper sun protection such as wearing sunscreen, protective clothing, and seeking shade during peak hours to minimize the risk of UV-related harm.
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 |
| Tribune | 4 | 5 | 7 | 10 | 11 | 12 | 12 | 11 | 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 |