Last updated: July 2, 2025
In Mendocino, United States, staying informed about the UV Index is essential for protecting your skin and overall health. Understanding UV levels can significantly help in preventing sunburn and reducing the risk of long-term skin damage, especially during the peak exposure hours. With a Csb climate that often features clear skies during the day, Mendocino residents and visitors face increased UV exposure, particularly between 11 AM and 2 PM, when the index can reach a high of 11. Whether you're enjoying a day at the beach or exploring the beautiful coastal trails, being aware of the UV Index can ensure you enjoy the sun safely.
The UV Index today showcases a dramatic rise in sun intensity as the morning gives way to the blazing afternoon. Starting at a mild 1 at 7:00 AM, it gradually escalates to a moderate 3 by 9:00 AM. By 10:00 AM, the index spikes to 5, signaling a need for caution. As the clock approaches noon, the index reaches a peak of 10, representing a high risk for harm from unprotected sun exposure. The zenith of 11 at 1:00 PM demands serious precautions. However, by 4:00 PM, it begins to decline, settling at 6 by the late afternoon and tapering off to 1 by dusk. It's essential to stay protected during those peak hours to enjoy the sun safely!
| 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 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 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, the UV Index exhibits significant seasonal changes, indicating varying levels of sun exposure risk. From January to February, the UV Index remains moderate (3-5), allowing for a burn time of 30 minutes. In March, it escalates to a high level (7), reducing burn time to 25 minutes, and by April, it reaches an alarming 8, classified as very high, with just 15 minutes of safe exposure. The peak months of UV risk are May, June, and July, where the Index hits an extreme level of 11, necessitating protective measures after only 10 minutes in the sun. As summer transitions into autumn, from August to October, the UV Index remains notably high (10-8), with burn times ranging between 15 to 25 minutes. As the year ends, the UV levels decrease again, showing moderate readings in November and December. Visitors and residents should take precautions particularly during the high-risk months from March to October by wearing sunscreen, protective clothing, and seeking shade to minimize exposure during peak hours.
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 |
| Mendocino | 3 | 5 | 7 | 8 | 11 | 11 | 11 | 10 | 8 | 6 | 4 | 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 |