Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Primero de Mayo, Mexico, where the sun can be particularly intense. With high UV levels peaking between 10 AM and 1 PM, awareness of these daily fluctuations is essential for protecting your skin from burns and long-term damage. In this semi-arid climate, where sunny days are the norm, a proper understanding of UV exposure risks can help you enjoy the outdoors safely while promoting overall skin health. Stay informed and shield yourself with the right precautions!
As the sun rises, the UV Index starts off low at 1 by 07:00. However, by 09:00, it climbs rapidly to 6, signaling a shift towards increasing intensity. The peak occurs at 12:00, where the UV Index reaches a significant 12, indicating a high risk of harm from unprotected sun exposure. As the afternoon progresses, values begin to decline, dropping to 9 by 14:00 and tapering off to 4 by 16:00. By the evening hours, the numbers dwindle back down to 1 by 18:00 and remain there until 19:00. Be mindful of the midday sun to protect your skin when the UV levels are at their highest!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 3 | moderate | 30 min |
09:00 | 6 | high | 25 min |
10:00 | 9 | very high | 15 min |
11:00 | 11 | extreme | 10 min |
12:00 | 12 | extreme | 10 min |
13:00 | 11 | extreme | 10 min |
14:00 | 9 | very high | 15 min |
15:00 | 7 | high | 25 min |
16:00 | 4 | moderate | 30 min |
17:00 | 2 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 1 | low | 45 min |
Throughout the year, UV index levels exhibit notable seasonal changes, with the highest risk occurring from April through August, when the UV Index peaks at 12—classified as extreme exposure. During these months, the burn time is critically low at just 10 minutes, emphasizing the importance of protection. February and March also present significant risks with a very high UV Index of 8 and 10 respectively, leading to burn times of 15 minutes. Visitors and residents are strongly advised to take precautions during high-risk months, including using sunscreen, wearing protective clothing, and seeking shade, especially when the sun is at its highest. Conversely, the UV Index decreases significantly in the fall and winter months, reaching a moderate level in December, where a burn time of 30 minutes can be expected.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Primero de Mayo | 6 | 8 | 10 | 12 | 12 | 12 | 11 | 12 | 11 | 9 | 7 | 5 |
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 |