Last updated: July 2, 2025
In Udalguri, India, being aware of the UV Index is essential for protecting your skin and overall health. With peak UV levels often reaching up to 13, understanding these fluctuations throughout the day can help you prevent sunburn and reduce long-term skin damage. Udalguri's subtropical highland climate brings ample sunshine, making it crucial for residents to stay informed about their UV exposure risks—especially between 10 AM and 12 PM when UV rays are most intense. Embrace the sun wisely by staying aware of the UV Index and making proactive choices for your skin health!
The hourly UV Index data paints a vivid picture of sun exposure throughout the day. Starting early, at 7:00 AM, the UV Index is a mild 4, increasing steadily to reach its peak at 10:00 AM and 11:00 AM with a high of 13. The intensity remains significant until 12:00 PM, when it slightly dips to 12 but still demands attention. As the afternoon progresses, the index begins to decline rapidly: it drops to 9 at 1:00 PM, and by 2:00 PM, it's reduced to 6. The sun’s power wanes further to 3 at 3:00 PM, before tapering off to 1 by 4:00 PM, and eventually settling at 0 by 6:00 PM—signaling a safe reprieve from UV exposure. With these fluctuations, it’s crucial to be sun-safe during peak hours, especially between 10:00 AM and 2:00 PM.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 4 | moderate | 30 min |
| 08:00 | 7 | high | 25 min |
| 09:00 | 10 | very high | 15 min |
| 10:00 | 13 | extreme | 10 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 1 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index exhibits notable seasonal changes, peaking during the summer months. From January (UV Index 5) to February (UV Index 7), there is a gradual increase, evolving into the high-risk months of March and April with indices reaching 8 and 9, respectively. The UV exposure reaches its peak in May through September, where average indices soar between 11 to 13, categorized as extreme. This intensity signifies a burn time of only 10 minutes, necessitating enhanced protection measures. As autumn approaches, October's index drops to 9 (very high), before tapering down in November and December to high-risk levels with indices of 7 and 6. Residents and visitors are advised to exercise caution and prioritize sunscreen application, protective clothing, and limited sun exposure—especially between 10 AM and 4 PM—during these high-risk months for optimal skin health.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Delhi UVI | 5 | 6 | 9 | 10 | 10 | 10 | 12 | 12 | 9 | 8 | 5 | 5 |
| Udalguri | 5 | 7 | 8 | 9 | 13 | 12 | 13 | 13 | 11 | 9 | 7 | 6 |
| Mumbai UVI | 8 | 9 | 10 | 11 | 11 | 12 | 13 | 13 | 11 | 10 | 7 | 7 |
| Ahmedabad UVI | 7 | 8 | 10 | 12 | 11 | 12 | 13 | 13 | 11 | 10 | 7 | 6 |
| Hyderabad UVI | 10 | 11 | 12 | 11 | 13 | 13 | 15 | 14 | 13 | 11 | 8 | 8 |
| Bengaluru UVI | 11 | 13 | 13 | 14 | 13 | 14 | 14 | 14 | 14 | 12 | 11 | 10 |