Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Boisar, India, where the tropical climate can lead to significant sun exposure risks. With UV levels peaking at a striking 12 during midday, staying informed about these levels is essential for preventing sunburn and promoting long-term skin health. Knowledge of the UV Index not only helps protect against immediate discomfort but also reduces the risk of skin damage over time. As Boisar experiences high UV exposure, especially between 10:00 AM and 1:00 PM, being aware of the UV Index can guide you to take precautionary measures and enjoy the sun safely.
The UV Index throughout the day presents a dramatic curve of sun intensity, peaking spectacularly at 12 during the midday hours. Starting at a mild 1 at 07:00, the index climbs steadily, reaching 3 by 08:00. As the sun rises higher, the intensity escalates, hitting 6 at 09:00 and soaring to 8 by 10:00. The pinnacle of UV exposure occurs between 11:00 and 13:00, with an impressive high of 11 at 11:00 and 12 at noon. Following this zenith, the numbers gracefully dip to 8 at 14:00, then gradually taper off, descending to 5 by 15:00 and further down to 1 by 17:00. As the evening approaches, the UV Index turns gentle, resting at 0 by 19:00, signaling the end of a sun-soaked day. Always remember to protect your skin during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index experiences significant fluctuations, with high-risk months occurring from March to September, where the index reaches extreme levels of 10 and above. Notably, April through August sees the highest readings, peaking at 13 in August, with a burn time that decreases to only 10 minutes in this period. This indicates a critical need for visitors and residents alike to adopt rigorous sun protection measures during these months. It is advisable to wear protective clothing, apply broad-spectrum sunscreen, and seek shade, especially within peak sunlight hours. As the year progresses, October experiences a slight drop in UV levels, transitioning to high exposure in November and December, where residents can enjoy a bit more time in the sun with increased burn times of 25 minutes. However, caution should still be exercised as UV radiation is present year-round.
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 |
| Boisar | 8 | 9 | 10 | 11 | 12 | 12 | 12 | 13 | 12 | 10 | 7 | 7 |
| 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 |