Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Lucknow, India, where the climate is characterized as Csa—hot summers that bring intense sunlight. Awareness of UV levels is essential for preventing sunburn and protecting skin health; with the UV Index peaking at a high of 12 around noon, exposure can lead to harmful effects if precautions aren't taken. The typical risks associated with Lucknow's sunny days emphasize the need for vigilance—especially during the hours of 10 AM to 2 PM when UV radiation is at its strongest. Stay informed and safeguard your skin while enjoying the warmth of the sun!
The UV Index throughout the day showcases a significant fluctuation, reaching its peak during the midday hours. At 07:00, the index begins at a mild 2, gradually intensifying to a moderate 5 by 08:00. As the sun climbs higher, the index escalates sharply, hitting 7 by 09:00 and soaring to a striking 10 at 10:00. The highest point occurs at 11:00 and 12:00, maintaining a high 12, indicating a need for sun protection. After this zenith, the UV levels begin to decline, dropping to 10 by 13:00, then softly declining further to 8 at 14:00. The afternoon brings more relief, with values diminishing to 5 at 15:00 and tapering off to 2 by 16:00. As evening approaches, UV levels fall sharply to 1 at 17:00 and 18:00, before finally resting at 0 by 19:00. This data highlights the importance of applying sunscreen during the peak hours, especially between 11:00 and 12:00.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 5 | 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 | 10 | very high | 15 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 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV exposure varies significantly, with the highest risk months occurring from June to August. During these months, UV Index values peak at 12, classified as extreme with a quick burn time of just 10 minutes. March through May also present considerable risk, with consistent UV Indexes of 9, where the exposure is classified as very high, and burn time drops to 15 minutes. Conversely, the months of January, November, and December have a moderate exposure category (UV Index 5), allowing for longer burn times of 30 minutes. Visitors and residents are advised to take precautions during the high-risk months, including seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen to minimize the risk of skin damage.
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 |
| Lucknow | 5 | 6 | 9 | 9 | 9 | 10 | 12 | 12 | 10 | 9 | 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 |
| 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 |