Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of J. Jesus Gonzalez Ortega (San Mateo), as it provides vital information on the intensity of ultraviolet radiation from the sun. Being aware of UV levels is essential for preventing sunburn and protecting skin health, especially in a region characterized by its semi-arid climate (BSk), where the sun can be particularly relentless. With peak UV Index values soaring to 14 between noon and 2 PM, it's imperative to take precautions—such as seeking shade and wearing sunscreen—during these hours to safeguard against harmful effects and ensure enjoyable time outdoors.
The UV Index for today presents an intriguing journey through the day’s hours. Starting off at a notable low of 0 at 7:00 AM, it gradually picks up as the sun rises, reaching 1 by 8:00 AM. A marked increase occurs around mid-morning, with the index soaring to 5 by 10:00 AM and peaking at an impressive 14 between 1:00 PM and 2:00 PM. This high intensity signifies a vital need for sun protection! As the afternoon progresses, the UV index begins to decline, dipping to 10 at 4:00 PM and tapering down to 1 by 7:00 PM. It’s essential to stay vigilant, particularly during midday hours, to ensure safety under the sun!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 14 | extreme | 10 min |
| 15:00 | 13 | extreme | 10 min |
| 16:00 | 10 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal variations, peaking during the spring and summer months. From January to March, the UV Index rises from 8 (very high) to 13 (extreme), leading into an intense period from April to October where the index remains at 14-15 (extreme) for most months, indicating a critical need for sun protection. February and March are particularly high-risk, with an extreme UV Index of 11 and 13, while the months of April and May reach their peak at 15, contributing to a burn time of just 10 minutes. As the summer wanes, the index gradually decreases to 13 in October, followed by a drop to 10 in November and returning to 8 in December (both categorized as very high). It is crucial for visitors and residents to prioritize sun safety during these high-risk months by wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade, especially during midday hours when UV exposure is the highest.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Guadalajara UVI | 9 | 11 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 9 | 8 |
| J. Jesus Gonzalez Ortega (San Mateo) | 8 | 11 | 13 | 15 | 15 | 14 | 14 | 14 | 14 | 13 | 10 | 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 |