Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Granger, United States, where the sunny days can lead to higher levels of UV exposure. By monitoring UV levels throughout the day, you can effectively prevent sunburns and protect your skin health. During peak hours, especially between 11 AM and 3 PM, Granger can experience significant UV radiation, reaching levels of 9, which necessitates extra caution. With a Dfa climate, summers can be warm and inviting, but it's essential to stay informed about UV risks to enjoy the outdoors safely.
The UV Index during this day exhibits a notable climb and fall, reaching its peak of 9 between 1 PM and 2 PM. Starting the day at a mild 1 at 7 AM and 8 AM, it gradually transitions to 2 by 9 AM. The significant rise begins at 10 AM, where it spikes to 4 and continues to escalate, hitting 6 at 11 AM and an impressive 8 by noon. As the sun reaches its zenith, the index maxes out at 9, indicating a strong need for protection against UV radiation. Subsequently, it starts to dip, settling down to 7 by 4 PM, and gracefully tapering off to 1 by 7 PM. To stay safe and enjoy the outdoors, it's crucial to take precautions during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure varies significantly, with notable spikes during the summer months. January and February have a moderate UV Index of 3 and 5, respectively, allowing for around 30 minutes of sun exposure before burning. However, as spring approaches, March sees an increase to a high UV Index of 6, reducing burn time to 25 minutes. The intensity peaks in April and continues through August, where the UV Index reaches a very high level of 9 or 10, resulting in only 15 minutes of safe exposure. September starts to ease with an index of 8, followed by a return to high levels in October (6) and gradually decreasing to moderate levels in November and December (4 and 3, respectively). High-risk months for UV exposure are from April through September, during which residents and visitors are advised to take precautions such as using sunscreen, wearing protective clothing, and limiting sun 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 |
| Granger | 3 | 5 | 6 | 9 | 9 | 10 | 10 | 9 | 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 |