Last updated: May 3, 2025
Understanding the UV Index in Arroyo Grande, United States is crucial for safeguarding your skin health and preventing sunburn. The UV Index ranges from low to very high throughout the day, peaking at an intensity of 11 between 1 PM and 2 PM, which signals the need for adequate sun protection. With a Csb climate known for its mild temperatures and occasional intense sun exposure, residents and visitors should be aware of the UV risks to enjoy the outdoors safely. By staying informed about UV levels, you can take proactive steps to protect yourself and your loved ones, ensuring that your time outside remains enjoyable and safe.
As the sun rises, the UV Index begins its ascent, starting at a mild 1 at 7:00 AM. By 9:00 AM, it climbs to a moderate 4, indicating a gradual surge in sun intensity. The peak arrives at 12:00 PM, where it spikes to a striking 10, suggesting that protective measures are essential. The intensity remains high through 1:00 PM with a peak of 11, before gradually tapering off. By 4:00 PM, the index drops to 5, and as the day winds down, it declines to a more manageable 1 by 7:00 PM. This hourly UVI data underscores the importance of sun safety, particularly during the midday hours. Remember to protect your skin when the sun is at its strongest!
| 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 | 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 | 8 | very high | 15 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal variations, peaking during the summer months of May to August, where it reaches extremes of 11 to 12. The highest risk occurs in May, June, and July, with burn times as short as 10 minutes under these conditions. March and April also present considerable UV exposure, categorized as very high, with burn times of just 15 minutes. Visitors and residents should exercise caution from late winter through summer, especially during these high-risk months, by seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen regularly to minimize the risk of skin damage. As the season transitions into fall and winter, UV levels decrease, offering more moderate exposure from October to December.
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 |
| Arroyo Grande | 4 | 6 | 8 | 10 | 11 | 12 | 12 | 11 | 10 | 7 | 5 | 3 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |