Last updated: May 3, 2025
In Granger, United States, understanding the UV Index is essential for maintaining healthy skin and preventing sunburn. As residents and visitors enjoy the area's distinct Cfa climate, characterized by warm summers, it's crucial to be aware of fluctuating UV levels throughout the day. With peak UV readings reaching 12 from 1 PM to 2 PM, the risk of skin damage increases significantly during these hours. By staying informed about the UV Index, you can take proactive measures to protect yourself and your loved ones while enjoying the great outdoors.
The UV Index on this particular day reveals a dynamic shift in sun exposure as the hours progress. Starting off at a mild 1 at 07:00, it remains low until 09:00, when it begins to rise gradually. By 10:00, the index reaches 5, signaling the start of heightened UV radiation. The day peaks sharply at 12:00 with a breathtaking 10, and just one hour later, it hits its maximum at 13:00 with an impressive 12. As the afternoon continues, the UV levels begin to decline, dropping to 11 at 14:00, and further decreasing to 9 by 15:00. The evening hours offer a welcome respite as the index falls to 4 at 17:00, then down to 2 by 18:00, and finally returning to a low 1 by 19:00. It's a vivid reminder to stay protected during those peak hours!
| 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 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index varies significantly throughout the year, with the highest levels occurring from March to September. During this period, particularly in April, May, June, and July, the UV Index reaches extreme levels of 11 and 12, resulting in a burn time of just 10 minutes for unprotected skin. February marks the beginning of high-risk months, with an index of 7 and burn time of 25 minutes. As autumn approaches, the UV Index decreases, but even in October, the index remains high at 8. Residents and visitors are advised to take extra precautions during these months, such as applying sunscreen, wearing protective clothing, and seeking shade to minimize sun exposure, especially during peak hours. In contrast, January, November, and December see lower UV levels (ranging from 4 to 6), where exposure is still moderate but poses less risk.
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 |
| Granger | 5 | 7 | 9 | 11 | 11 | 12 | 12 | 11 | 11 | 8 | 6 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |