Last updated: May 3, 2025
In Alturas, United States, being aware of the UV Index is crucial for maintaining your skin health and preventing sunburn. With elevated UV levels peaking around noon, understanding these fluctuations can help residents and visitors alike take proactive steps to protect themselves from harmful ultraviolet rays. Alturas, located in a temperate climate zone, experiences significant UV exposure, particularly during the summer months. By monitoring the UV Index and adjusting outdoor activities accordingly, you can enjoy the sunny days while safeguarding your skin against long-term damage. Stay informed and stay protected!
Starting the day with a gentle UV Index of 1 at 07:00, the sun gradually rises in intensity as it climbs higher in the sky. By 10:00, the UV Index spikes to 5, but the real surge occurs around 12:00, hitting a peak of 10. The highest exposure comes at 13:00, reaching an impressive 12, encouraging sun safety awareness as the afternoon sun bears down. As the day progresses, the UV levels begin to taper off, with 11 at 14:00 and gradually decreasing to 4 by 17:00. The evening brings a welcome relief, with the index dropping back to 1 by 19:00. Overall, this UV forecast illustrates the importance of being sun-smart during the peak hours of midday.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | 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 | 12 | 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 |
As the seasons change, so do UV levels, significantly impacting skin safety for both visitors and residents. From January to March, the UV Index rises from 6 to 10, indicating high to very high exposure risk, with burn times decreasing from 25 minutes to just 15 minutes. April through August marks the peak months for UV intensity, consistently at 12, categorized as extreme, where even short exposures of 10 minutes can lead to sunburn. In September, UV levels remain high at 11 before tapering off through October with a 9, and finally decreasing to 5 in December, classified as moderate. For optimal sun safety, it is crucial for individuals to plan outdoor activities accordingly, particularly during the spring and summer months, ensuring protective measures such as sunscreen, clothing, and shade are utilized.
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 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |
| Alturas | 6 | 8 | 10 | 11 | 12 | 12 | 12 | 12 | 11 | 9 | 7 | 5 |