Last updated: May 3, 2025
Understanding the UV Index is essential for residents and visitors in Fereydunshahr, Iran, especially given the city's Dsa climate which can expose individuals to significant UV radiation levels. Awareness of UV levels plays a critical role in preventing sunburn and promoting overall skin health, as harmful rays can lead to both immediate discomfort and long-term damage. During peak hours, from 11:00 AM to 1:00 PM, the UV Index can soar as high as 14, indicating extreme risk for unprotected skin. By staying informed about daily UV conditions, you can protect yourself and enjoy the sunny days in Fereydunshahr safely.
As the sun rises, the UV Index (UVI) begins its gentle ascent, starting at a mild 1 at 07:00. By 08:00, it ramps up to 3, signaling the need for caution. The sun’s intensity reaches its peak between 11:00 and 13:00, soaring to a blistering 12 and 14, respectively—ideal moments to seek shade or lather up with sunscreen. As the afternoon progresses, the index gradually dips, descending to 9 by 15:00, then tapering off to 6 at 16:00. By the evening, from 17:00 onward, the UVI returns to its gentle morning levels of 3 and finally 1 at 18:00 and 19:00, concluding the day on a decidedly safer note. Keep in mind, the midday hours are crucial for sun safety!
| 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 | 12 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index exhibits significant seasonal changes, with the highest levels occurring from March to October, where values frequently reach the extreme category. Notably, May and June peak at UV Index 14, marking them as the most critical months for sun exposure. Visitors and residents should exercise caution, particularly during February through September, as these months are classified as high-risk for skin damage, with burn times as short as 10 minutes under direct sunlight during peak hours. It is advisable to wear sunscreen, protective clothing, and seek shade during the peak UV times to reduce the risk of harmful exposure. Even in the lower UV months of November and December, where the burn time increases to 25-30 minutes, it remains important to stay sun-smart.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Karaj UVI | 4 | 5 | 8 | 9 | 12 | 12 | 11 | 10 | 10 | 7 | 4 | 3 |
| Mashhad UVI | 4 | 5 | 8 | 10 | 12 | 12 | 12 | 11 | 10 | 7 | 4 | 3 |
| Tehran UVI | 4 | 6 | 8 | 9 | 13 | 12 | 11 | 10 | 10 | 7 | 5 | 3 |
| Tabriz UVI | 4 | 5 | 9 | 10 | 12 | 12 | 12 | 11 | 9 | 7 | 4 | 3 |
| Isfahan UVI | 5 | 7 | 10 | 10 | 13 | 13 | 12 | 11 | 10 | 9 | 6 | 4 |
| Fereydunshahr | 7 | 9 | 11 | 11 | 14 | 14 | 13 | 12 | 11 | 9 | 6 | 5 |