Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Bongaigaon, India, as it helps gauge the intensity of ultraviolet rays from the sun, allowing individuals to take necessary precautions against excessive exposure. With maximum UV levels peaking at 12 around midday, awareness is essential for preventing sunburn and safeguarding skin health in this region known for its distinct Cwa climate. On sunny days, Bongaigaon can experience significant UV radiation, making it vital to check daily UV forecasts to protect yourself and your loved ones from potential skin damage while enjoying outdoor activities.
Throughout the day, the UV Index experiences notable fluctuations, peaking at a striking 12 between 10:00 AM and 12:00 PM. Morning hours witness a gradual rise, starting from a moderate 4 at 7:00 AM, escalating to 6 by 8:00 AM. By 9:00 AM, the intensity sharply climbs to 10, urging caution for those outdoors. As the sun reaches its zenith, the index holds steady at 12, a warning for optimal sun protection. However, the intensity begins to wane post-noon, dropping to 9 by 1:00 PM and unwinding further to 6 by 2:00 PM. By late afternoon, the levels diminish significantly, with values of 3 at 3:00 PM and dwindling to 1 by 4:00 PM. As the sun sets, the UV Index eventually falls to 0 by 7:00 PM, providing relief as daylight fades.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 4 | moderate | 30 min |
| 08:00 | 6 | high | 25 min |
| 09:00 | 10 | very high | 15 min |
| 10:00 | 12 | extreme | 10 min |
| 11:00 | 12 | 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 |
Seasonal UV changes reveal that spring and summer months pose the highest risk for sun exposure, with the UV Index peaking in July and August at 12, categorized as extreme, where burn time is just 10 minutes. The months of March through October consistently show high to extreme UV levels, highlighting May through September as the most critical period for skin protection. To minimize risk, it is advisable for visitors and residents to take precautions during these high-risk months, including wearing protective clothing, applying broad-spectrum sunscreen with a high SPF, and seeking shade whenever possible. Conversely, winter months (January and December) feature moderate levels with an index of 5, allowing for safer outdoor activities but still warranting some level of sun protection.
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 |
| Bongaigaon | 5 | 7 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 7 | 5 |
| 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 |