Last updated: July 2, 2025
In Hayti, United States, awareness of the UV Index is crucial for safeguarding your skin against the harmful effects of sun exposure. As the UV levels can rise significantly throughout the day—peaking at a notable 9 at 1 PM—understanding these levels is key to preventing sunburns and promoting long-term skin health. With Hayti's Dfa climate bringing warm summers, residents and visitors alike must remain vigilant about UV risks, especially during midday when the sun is most potent. Stay informed and protect yourself under the sun!
As the sun rises, the UV Index starts off low at 1 between 07:00 and 08:00, making it a safe time for outdoor activities. However, as the day progresses, the UV levels climb sharply, hitting 3 by 09:00 and reaching a significant peak of 9 from 13:00 to 14:00. During these hours, it's crucial to take precautions, such as wearing sunscreen and protective clothing, as the intense UV radiation poses a considerable risk. The index gradually declines after this peak, dropping to 6 by 16:00 and further down to 1 by 19:00, signaling a return to safer conditions as the day winds down. Stay informed and protect yourself when the sun is at its strongest!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure varies significantly, peaking during the summer months. From January to March, the UV Index increases from 3 to 6, indicating a gradual rise in risk, with March marking the transition to a high exposure category. This trend continues into April and May, where the index escalates to a very high level of 8 and 9 respectively, necessitating caution. June sees the highest UV Index of 10, remaining very high through July and August with indexes of 9. As fall approaches, the index decreases, dropping to 5 in October and further declining to 2 by December. High-risk months are therefore April through September, when sunburn can occur within 15 minutes of exposure. Visitors and residents should prioritize sun safety during these months by wearing protective clothing, applying sunscreen, and seeking shade during peak sun hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hayti | 3 | 5 | 6 | 8 | 9 | 10 | 9 | 9 | 8 | 5 | 3 | 2 |
| Chicago UVI | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 6 | 4 | 2 |
| Brooklyn UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
| New York City UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
| Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |