Last updated: July 2, 2025
In Casa Grande, United States, awareness of the UV Index is crucial for protecting your skin from harmful ultraviolet radiation. Understanding UV levels not only helps in preventing painful sunburns but also plays a vital role in maintaining long-term skin health. With its BWh climate, Casa Grande experiences intense sunlight, especially during peak hours when the UV Index can soar to 11. This means residents should be particularly vigilant about sun protection strategies, ensuring safe outdoor activities while safeguarding their skin from the risks associated with high UV exposure.
The UV Index today charts an intriguing journey as the sun makes its ascent. Starting at a mild 1 at 7:00 AM, the UV levels steadily rise, reaching a moderate 3 by 8:00 AM. As the day progresses, the intensity peaks dramatically, hitting 10 at 11:00 AM and soaring to a maximum of 11 at noon and 1:00 PM—a clear signal for sun safety. After this zenith, the index gracefully declines, dipping to 7 by 3:00 PM, before slipping to 2 at 5:00 PM and settling back to a low 1 by evening. It's a vivid reminder of the sun’s power and the importance of taking precautions during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 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 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, seasonal UV changes indicate significant variations in sun exposure risk. During the high-risk months of March through August, UV Index levels peak, reaching extreme levels (11-12) from April to July. It's crucial for both visitors and residents to take protective measures, particularly in these months, where the burn time drops to just 10 minutes. Even in September and October, with UV levels still classified as very high, caution is warranted. For safety, individuals should utilize sunscreen, wear protective clothing, and limit sun exposure during peak hours. In contrast, the moderate UV months of January, November, and December offer a reprieve, allowing for longer safe exposure times of 30 minutes. Regularly checking the UV index can help mitigate skin damage and promote sun safety year-round.
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 |
| Casa Grande | 4 | 6 | 9 | 11 | 11 | 12 | 11 | 11 | 10 | 8 | 5 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |