Last updated: May 3, 2025
In Gateway, United States, being aware of the UV Index is crucial for protecting your skin and overall health. As the sun's rays can become particularly intense, understanding UV levels helps prevent sunburn and long-term skin damage. With a Cfa climate, characterized by warm summers and varied cloud cover, residents face significant UV exposure, especially during the midday hours when the index peaks at 11 and 12. Stay informed and take proactive measures to enjoy the beautiful outdoors safely!
As the day unfolds, the UV Index begins low in the morning, peaking sharply around 12:00 PM with a striking 11. From there, it maintains a high level, reaching a maximum of 12 at 1:00 PM, before gradually falling as the afternoon progresses. By 3:00 PM, it dips to 9, signaling a decline in intensity. As evening approaches, the index returns to a more manageable 2 by 6:00 PM, ultimately settling at 1 as the sun sets. Remember to protect your skin, especially during those peak hours when the UV intensity reaches its highest levels!
| 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 | 11 | extreme | 10 min |
| 13:00 | 12 | 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 |
During the year, UV Index levels exhibit notable seasonal changes, with high-risk months concentrated from February to September. The highest readings occur in April to September, where the UV Index reaches 12, categorized as extreme, with a burn time of just 10 minutes. Particularly, months like February and March, registering UV Index values of 9 and 10 respectively, also signify significant risk, labeled as very high. Visitors and residents are strongly advised to take precautions during these months by using sunscreen, wearing protective clothing, and limiting sun exposure, especially during midday hours, to reduce the risk of sunburn and long-term skin damage. As the year transitions into November and December, the UV Index decreases to levels classified as high, but vigilance is still recommended to safeguard skin health.
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 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |
| Gateway | 6 | 9 | 10 | 12 | 12 | 12 | 12 | 12 | 11 | 10 | 7 | 6 |