Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Yelahanka, India, where the tropical climate often brings elevated sun exposure. Being aware of UV levels is essential for preventing sunburn and promoting skin health; even on seemingly mild days, harmful rays can be intense. In Yelahanka, with its characteristic Aw climate, UV exposure tends to peak dramatically around noon—reaching a formidable 11 to 13 on the index—underscoring the importance of protecting your skin during these hours. Stay informed, stay safe!
As the sun rises, the UV Index begins its ascent, starting at a gentle 2 by 7:00 AM. By 8:00 AM, it increases to 4, signaling a bit more caution for those heading outdoors. The index climbs significantly, reaching 7 at 9:00 AM, and peaks at a striking 13 by 11:00 AM and 12:00 PM. This intense midday sun warrants protective measures, as the UV levels begin to taper off after 1:00 PM, dropping to 11 at 1:00 PM and then descending to 8 by 2:00 PM. As the afternoon progresses, the levels decrease further, settling at 5 by 3:00 PM and steadily falling to 1 by 5:00 PM. The day winds down into the evening, with UV levels reaching 0 by 7:00 PM, marking a safe end to sun exposure. Always remember to protect your skin during the peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 11 | extreme | 10 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 11 | 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 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV levels show significant seasonal changes, remaining in the extreme exposure category from January to October, with peak values in April, June, July, August, and September where the UV Index reaches 14. The high-risk months for UV exposure are from April to September, when individuals can burn within just 10 minutes of direct sun exposure. Visitors and residents are strongly advised to take necessary precautions during these months, including wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade whenever possible. In contrast, November and December experience slightly lower UV levels, with indexes of 11 and 10, respectively, suggesting a reduced but still significant risk with a longer burn time of 15 minutes in December. Overall, vigilance is essential year-round to protect against harmful UV radiation.
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 |
| Hyderabad UVI | 10 | 11 | 12 | 11 | 13 | 13 | 15 | 14 | 13 | 11 | 8 | 8 |
| Yelahanka | 11 | 13 | 13 | 14 | 13 | 14 | 14 | 14 | 14 | 12 | 11 | 10 |
| Bengaluru UVI | 11 | 13 | 13 | 14 | 13 | 14 | 14 | 14 | 14 | 12 | 11 | 10 |