Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Montgeron, France, where sunny days and mild Mediterranean weather can lead to increased exposure to harmful ultraviolet rays. Awareness of UV levels plays a vital role in preventing sunburn and maintaining long-term skin health, particularly during peak hours when the index soars above 6, such as between noon and 2 PM. Given Montgeron’s climate zone (Cfb), which features warm summers, it’s essential to stay informed about daily UV fluctuations to protect yourself and your loved ones from potential skin damage while enjoying the beautiful outdoors.
The UV Index today reveals a dramatic rise in sun exposure as the day progresses. Starting gently at 1 during the early hours, by 10:00 AM it peaks to 4, signaling an increase in sun intensity. The UV levels continue to ascend, reaching their maximum at 1:00 PM and 2:00 PM, where they hit an impressive 9. As the afternoon rolls on, the values begin to taper off to 8 by 3:00 PM and gradually decline through the evening, settling at 2 by 7:00 PM. It's a brilliant reminder to stay protected from the sun, especially during peak hours!
| 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 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, UV levels vary significantly, with the highest risk months occurring from May to August, where the UV Index reaches a peak of 9 in June and remains at 8 during July and August, indicating a very high exposure category and a critical burn time of just 15 minutes. In contrast, winter months see much lower UV levels, with January and November registering a UV Index of 2 and December dropping to 1, categorized as low exposure. Visitors and residents should exercise caution during the high-risk months by minimizing sun exposure, wearing protective clothing, and applying sunscreen regularly, particularly between late spring and early fall when UV radiation is at its strongest.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Montgeron | 2 | 3 | 5 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |
| Paris UVI | 2 | 3 | 5 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |
| Lyon UVI | 2 | 3 | 5 | 6 | 8 | 10 | 9 | 8 | 6 | 5 | 3 | 2 |
| Nice UVI | 2 | 4 | 6 | 7 | 8 | 10 | 9 | 8 | 7 | 5 | 3 | 2 |
| Marseille UVI | 2 | 4 | 5 | 7 | 9 | 10 | 9 | 8 | 7 | 5 | 3 | 2 |
| Toulouse UVI | 2 | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |