Last updated: June 2, 2025
In Henrietta, United States, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn. With our Cfa climate, characterized by humid subtropical weather, residents face varying levels of UV radiation throughout the day. Understanding daily UV levels can help you take proactive measures, ensuring your skin stays protected during those peak hours — especially when the UV Index soars to 11 between noon and 2 PM. By keeping an eye on these indicators, you can enjoy the sunshine while safeguarding your skin against potential harm.
The UV Index is a crucial indicator of sun exposure, peaking dramatically throughout the day. Starting at a mild 1 by 07:00, it escalates swiftly, reaching 3 by 09:00. The intensity rises further, hitting 5 at 10:00 and surging to a striking 8 by 11:00. The sun's power truly culminates at 12:00, with an impressive 10 on the scale, and maintains a scorching 11 through 13:00 and 14:00. As the afternoon progresses, values begin to decline from 10 at 15:00 to 7 by 16:00, and gently taper off to 5 at 17:00, finally dwindling back to 3 by 18:00 and 1 come 19:00. Stay protected during peak hours to enjoy the sunshine safely!
| 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 | 11 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so does the UV Index, reflecting varying levels of solar radiation exposure throughout the year. January and December have a moderate UV Index of 4, with a burn time of 30 minutes, while February sees an increase to 6, indicating high exposure risk. The risk becomes more pronounced from March through August, where the UV Index reaches its peak at 11, categorized as extreme; during this period, the burn time significantly decreases to just 10 minutes. September and October remain high at 10 and 8, respectively, while November returns to moderate levels. Therefore, visitors and residents alike should be particularly vigilant from March to August, taking necessary precautions to minimize sun exposure, such as wearing protective clothing, applying sunscreen, and seeking shade 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 |
| Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
| Henrietta | 4 | 6 | 8 | 10 | 11 | 11 | 11 | 11 | 10 | 8 | 5 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |