Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Valle del Rosario, Mexico, where the climate can lead to high levels of solar radiation. With UV levels peaking at 12 during midday, awareness of the intensity of UV exposure is key to preventing sunburns and protecting skin health. As a location within the BSk climate zone, Valle del Rosario experiences significant sun exposure, making it especially important to stay informed about UV conditions throughout the day. Being vigilant can help safeguard your skin while you enjoy the vibrant outdoors of this beautiful region.
Throughout the day, the UV Index experiences a dynamic shift, peaking at an impressive 13 between 1 PM and 2 PM, indicating a high risk of harm from unprotected sun exposure. The morning starts gently, with a UV Index of 1 at 7 AM, gradually rising to 4 by 9 AM. As the sun inches higher, the intensity increases sharply, reaching 10 by 11 AM and soaring to 12 by noon. Post-peak, the index begins to decline, dropping to 10 at 3 PM, before settling back to a mild 2 by 6 PM. This clear progression emphasizes the importance of sun protection during the midday hours when the UV Index is at its highest. Enjoy the sunshine, but remember to stay safe! ☀️
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 10 | 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 UV Index fluctuates throughout the year, it is crucial for both visitors and residents to be aware of seasonal changes and high-risk months. January kicks off with a UV Index of 7 (high) and burn time of 25 minutes, but this escalates dramatically by March when it reaches 11, categorized as extreme, with a burn time of just 10 minutes. The peak months for UV exposure are April and May, both featuring a UV Index of 14 (extreme), meaning quick sunburns can occur in as little as 10 minutes. July through September maintain a steady UV Index of 13, posing high risks as well. As autumn sets in, November sees a decline to an index of 8 (very high), and December returns to a more moderate 6 (high). Visitors and residents are advised to take protective measures, especially during the extreme months from March to October, such as wearing sunscreen, hats, and protective clothing, and seeking shade during peak hours, to mitigate the risk of skin damage from increased UV radiation.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Valle del Rosario | 7 | 10 | 11 | 14 | 14 | 13 | 13 | 13 | 13 | 11 | 8 | 6 |
| 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 |