Last updated: July 2, 2025
Understanding the UV Index in Zanjan, Iran, is essential for safeguarding your skin and overall health. With UV levels peaking during the midday hours, being informed about these fluctuations can help prevent painful sunburns and long-term skin damage. Zanjan’s climate, characterized by its Dsb classification, means exposure to UV radiation can be significant, especially from late morning to early afternoon when indices can soar to 11 or even 12. By staying aware of the UV Index, residents can enjoy the sun while prioritizing their skin health.
The UV Index throughout the day presents a fascinating shift in sun intensity. At 07:00, the index starts low at 1, indicating a safe environment for outdoor activities. As the morning progresses, it steadily climbs, reaching 4 by 09:00 and 7 by 10:00. The sunshine peaks around 12:00, hitting a robust 11, and even escalates to 12 by 13:00, marking the apex of midday sun exposure. However, the index begins to gracefully descend after this high, dropping to 8 by 15:00, and tapering off to 3 at 17:00. As the evening sets in, the index returns to the safety of 2 at 18:00 and further recedes to a gentle 1 by 19:00. This data underscores the importance of sun safety during peak hours, particularly between 11:00 and 14:00, when protective measures are most crucial.
| 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 | 11 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so do the UV Index levels, significantly impacting sun safety for both visitors and residents. January to February sees a moderate to high risk, with a UV Index reaching 6 and corresponding burn times of 30 to 25 minutes. However, from March to August, the UV Index escalates to extreme levels, peaking at 13 in May and maintaining high values throughout the summer months. This period signifies the high-risk months for sun exposure, where burn times drop drastically to just 10 to 15 minutes. As we transition into September to October, the risk slightly decreases, yet caution remains essential with a very high UV Index of 10 in September. Therefore, it is advisable for residents and visitors to take protective measures during these peak months by seeking shade, wearing sunscreen, and donning protective clothing to minimize sun exposure.
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 |
| Zanjan | 5 | 6 | 9 | 10 | 13 | 12 | 12 | 11 | 10 | 7 | 5 | 4 |
| Isfahan UVI | 5 | 7 | 10 | 10 | 13 | 13 | 12 | 11 | 10 | 9 | 6 | 4 |