Last updated: May 3, 2025
Understanding the UV Index is vital for residents of Roshtkhvar, Iran, as it directly impacts skin health and sunburn prevention. With a BSk climate characterized by sunny days, awareness of UV levels helps you navigate outdoor activities while minimizing risks. For instance, the UV Index peaks at 12 around noon, indicating a very high exposure level that necessitates protective measures. By staying informed about these fluctuations throughout the day, you can enjoy the sun safely and protect your skin from harmful effects.
The UV Index climbs sharply as the day progresses, starting from a gentle 2 at 07:00 and peaking at a striking 12 between 11:00 and 12:00. This midday intensity indicates a significant risk of harm from unprotected sun exposure. As afternoon fades into evening, the index gradually decreases, dropping to 9 at 14:00, then settling at 6 by 15:00, and dwindling to 1 by 18:00. Finally, it reaches a 0 level by 19:00, making late evening a safer time to enjoy outdoor activities. Be sure to take precautions during peak hours to protect your skin from potential damage!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index demonstrates significant seasonal variation, peaking during the warmer months from March through August, where values reach extreme levels (UV Index 10-12), particularly in May, June, and July. During these months, the burn time shortens to as little as 10 minutes, indicating a heightened risk of skin damage from sun exposure. High-risk months include March, April, May, June, July, and August, all marked by very high to extreme UV indices. Residents and visitors should take necessary precautions, such as wearing sunscreen, protective clothing, and seeking shade, especially during peak sun hours to reduce the risk of sunburn and long-term skin damage. As the index decreases in the fall and winter months, November and December present lower risks, with moderate levels and longer burn times of 30 minutes. Nonetheless, it is advisable to remain vigilant and protect the skin during all months of the year.
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 |
| Roshtkhvar | 4 | 6 | 9 | 10 | 12 | 12 | 12 | 11 | 10 | 8 | 5 | 4 |
| Isfahan UVI | 5 | 7 | 10 | 10 | 13 | 13 | 12 | 11 | 10 | 9 | 6 | 4 |