Last updated: July 2, 2025
In Whitehall, United States, being aware of the UV Index is crucial for protecting your skin against harmful ultraviolet rays. Understanding UV levels helps you take preventive measures against sunburn and long-term skin damage, especially during those peak hours when the index soars. With Whitehall's BSk climate, characterized by warm summers and clear skies, residents face notable UV exposure risks, particularly around midday when the UV Index can reach a maximum of 10. Stay informed and safeguard your skin by regularly checking the UV Index to enjoy the beautiful outdoors safely!
As the sun rises, the UV Index begins its steady ascent, starting at a mild 1 at 7:00 AM. By 8:00 AM, it reaches 2, hinting at the day ahead. As we approach mid-morning, the intensity climbs to 3 by 9:00 AM and then dramatically spikes to 5 at 10:00 AM. The real peak occurs between 12:00 PM and 2:00 PM, where the index soars to a whopping 10, indicating strong sun exposure. This midday intensity begins to taper off by 3:00 PM, as it drops to 9, and continues to slide through the late afternoon, ending the day at 1 by 7:00 PM. It's crucial to stay protected during those peak hours to enjoy the sun safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 9 | 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 |
Throughout the year, UV levels fluctuate significantly, with notable increases during the spring and summer months. January and February present moderate UV levels (Index 3 and 5), allowing for relatively safer sun exposure with a burn time of 30 minutes. However, as March rolls in, the UV Index rises to 7, marking the transition to high risk, and this trend continues to escalate through April and May, when UV levels reach 9 and 10 (very high), requiring caution with a burn time of just 15 minutes. The peak occurs in June, where the UV Index hits 11, classified as extreme, necessitating minimal sun exposure and diligent protection measures with a mere 10-minute burn time. This high risk persists through July and August (both at 10), before tapering off slightly in September (UV Index 8) and October (UV Index 6). The autumn months of November and December see a drop back to moderate and low levels (Indexes 4 and 2), allowing for longer exposures of 30 and 45 minutes, respectively. Consequently, individuals are advised to be particularly vigilant during the high-risk months of March through September, ensuring adequate sun protection, such as sunscreen, hats, and protective clothing, to minimize the risk of skin damage.
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 |
| Whitehall | 3 | 5 | 7 | 9 | 10 | 11 | 10 | 10 | 8 | 6 | 4 | 2 |
| 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 |