Last updated: May 3, 2025
In Norcross, United States, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. With the region's Cfa climate, residents and visitors alike experience varying levels of UV exposure throughout the day. As the UV Index can spike to a maximum of 11 during peak hours, awareness of these levels plays a vital role in protecting against harmful effects of ultraviolet radiation. By keeping an eye on the UV Index, you can enjoy the sun safely while reducing the risk of skin damage and related health issues. Remember, a little knowledge goes a long way in safeguarding your summer adventures!
The UV Index throughout the day paints a vivid picture of sun intensity and its impact on outdoor activities. Starting early at 7:00 AM, the exposure remains low at a mere 1, ideal for morning strolls. As the sun climbs, 9:00 AM sees a slight increase to 3, hinting at the day's potential. By 10:00 AM, the index escalates to 5, and it reaches a peak at 12:00 PM with a blistering 10. The highest point occurs around 1:00 PM and 2:00 PM, where it hits 11, indicating the need for sun protection. Gradually, the index begins to decline, drifting down to 7 by 4:00 PM, and dropping to a safe 1 by 7:00 PM, closing the day with a protective embrace as twilight falls. This information serves as a crucial guide for planning sun-safe activities!
| 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 | 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 |
As the seasons change, the UV Index demonstrates considerable variation, impacting burn potential and risk levels for skin exposure. The highest risk months occur from March to August, with values peaking at 11 during May, June, and July, indicating an extreme exposure category with a burn time of just 10 minutes. February marks a shift into a high risk category, while September through November gradually decreases the UV levels, transitioning back to moderate by December. It is crucial for visitors and residents alike to exercise caution during these high-risk months by wearing protective clothing, applying sunscreen regularly, and seeking shade to mitigate the potential for 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 |
| Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
| Norcross | 4 | 7 | 8 | 10 | 11 | 11 | 11 | 10 | 9 | 8 | 6 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |