Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Eureka de Media Luna (Eureka), Mexico, where the sun shines brightly throughout the year. As a place with a BWh climate, the UV exposure can be significant, especially during peak hours. Knowing the daily UV levels not only helps prevent sunburn but also plays a vital role in maintaining long-term skin health. With midday readings soaring to a maximum of 13, it's essential to take necessary precautions to stay safe in the sun. Embracing UV awareness allows you to enjoy the beautiful weather without the risk of harmful effects.
This hour-by-hour UV Index data reveals a striking pattern throughout the day. Starting off gently at 1 at 07:00 and 08:00, the intensity begins to rise gradually, reaching 2 by 09:00. The sun's rays become increasingly potent as the clock ticks, hitting 4 at 10:00 before skyrocketing to 7 at 11:00. The peak occurs in the early afternoon, with a scorching 10 at 12:00 and reaching an intense 13 at 14:00. Following this zenith, the UV Index begins to taper off, descending to 12 by 15:00, then dropping to 9 at 16:00. As the day cools, the UVI continues to decline, finding itself at 3 by 18:00 and returning to a more manageable 1 at 19:00. In summary, the UV exposure is highest between 11:00 and 14:00, making those hours critical for sun safety.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so does the UV Index, highlighting significant variations in sun exposure risk throughout the year. The high-risk months are prominently from February to October, with peaks in March, April, May, June, July, August, September, and October all classified under the extreme category, where the burn time is notably only 10 minutes. This makes February the first month with a very high category, and November sees a reduction to very high as well, while January and December present a high risk with extended burn times of 25 minutes. Visitors and residents are strongly advised to take precautions during the peak months by wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade to minimize exposure, especially during midday when the sun's strength is at its highest.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Eureka de Media Luna (Eureka) | 7 | 10 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 11 | 8 | 7 |
| Guadalajara UVI | 9 | 11 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 9 | 8 |
| Iztapalapa UVI | 10 | 12 | 14 | 15 | 14 | 14 | 14 | 14 | 14 | 12 | 10 | 8 |
| Ecatepec de Morelos UVI | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
| Mexico City UVI | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |