Last updated: August 1, 2025
Understanding the UV Index is crucial for the residents of Challapalle, India, where the sun shines brightly in an Aw climate zone. With peak UV levels reaching as high as 13 during midday, being aware of UV exposure is essential for preventing sunburn and maintaining long-term skin health. This knowledge empowers individuals to take appropriate precautions, ensuring they enjoy the outdoors while minimizing the risk of harm from the sun’s intense rays. In Challapalle, recognizing the significant UV risks—especially between 10 AM and 2 PM—can make a world of difference in protecting your skin and overall well-being.
The UV Index during the day shows a striking pattern, peaking in the late morning to early afternoon. At 07:00, the index starts modestly at 2, but by 08:00, it surges to 5. As the sun climbs higher, it reaches a significant 8 by 09:00 and surges to a maximum of 13 by both 11:00 and 12:00. This intense UV exposure starts to decline after 1:00 PM, dropping to 11 by 13:00 and then decreasing steadily to 5 by 15:00. As the evening approaches, the index continues to diminish, falling to 2 at 16:00, before tapering off to 1 by 17:00 and 18:00. Finally, by 19:00, the UV Index settles at 0, marking the end of a day filled with significant sunlight exposure. Be sure to protect your skin during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 8 | very high | 15 min |
| 10:00 | 12 | extreme | 10 min |
| 11:00 | 14 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV index levels exhibit significant seasonal changes, with the highest values occurring from March to October. The months of February to September are particularly high-risk, featuring extreme UV levels where a burn can occur in as little as 10 minutes of exposure. Notably, September sees the peak UV Index of 14, maintaining extreme levels that warrant caution. During the winter months of January, November, and December, UV levels drop to very high, allowing for slightly longer exposure times of 15 minutes before the risk of burning increases. Given these variations, it is crucial for visitors and residents to take appropriate sun safety precautions, especially during the highest-risk months, by using sunscreen, wearing protective clothing, and seeking shade during peak sunlight hours.
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 |
| 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 |
| Challapalle | 8 | 11 | 11 | 12 | 13 | 12 | 13 | 13 | 14 | 11 | 9 | 8 |
| 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 |