Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of McCook, United States, where the climate can lead to higher levels of sun exposure. With UV levels peaking at 11 during the midday hours, it's essential to be aware of these levels to prevent sunburn and protect skin health effectively. As a part of McCook’s Dfa climate zone, the risk of harmful UV radiation can increase, especially in the warmer months. Staying informed about the UV Index not only helps you enjoy the outdoors safely but also contributes to long-term skin wellness. Remember, knowledge is your best defense against UV damage!
The UV Index throughout the day showcases notable fluctuations, reflecting the movement of the sun and the intensity of sunlight exposure. Early in the morning, from 07:00 to 09:00, the index remains relatively low, peaking at 3 by 09:00. However, as the day progresses, the UV index escalates dramatically—10:00 sees a rise to 5, followed by a striking surge to 10 at 12:00, reaching its zenith of 11 at 13:00. This intense hour of UV exposure is matched by an equally potent 14:00 before tapering off sharply in the afternoon. By 15:00, the index dips to 10, then declines steadily, concluding the day at a more moderate 2 by 19:00. As a reminder, the highest UV exposure occurs around midday; thus, extra caution is advised during these hours for optimal skin protection!
| 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 | 7 | high | 25 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 | 8 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, UV exposure varies significantly, with high-risk months typically occurring from March to September. During these months, particularly in April through July, the UV index reaches notably high levels, peaking at 11, which indicates extreme exposure risks and a quick burn time of just 10 minutes. As the seasons shift, visitors and residents should be particularly vigilant from May to August, when protective measures such as sunscreen, hats, and seeking shade are essential to prevent skin damage. In contrast, January, November, and December present a moderate UV index of 3-4, allowing for longer burn times of 30 minutes, though sunscreen should still be applied. Staying informed about these UV changes can help ensure safe outdoor activities 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 |
| McCook | 3 | 5 | 7 | 9 | 10 | 11 | 11 | 10 | 9 | 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 |