Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Two Harbors, United States, where the climate can amplify your sun exposure. As you enjoy the outdoors, being aware of UV levels is essential for preventing sunburn and maintaining long-term skin health. The UV Index in this Dfb climate zone can reach peaks of 8 during midday, indicating a high risk of harm from unprotected sun exposure. With typical summer days bringing abundant sunshine, knowing when to seek shade or apply sunscreen can make a significant difference in protecting your skin while you explore the beautiful landscapes of this charming waterfront community.
As the sun rises, the UV Index begins its ascent, starting at a mere 1 at 7:00 AM. By 8:00 AM, it climbs to 2, but it’s by 9:00 AM that we see a moderate rise to 3. The intensity peaks between 11:00 AM and 1:00 PM, hitting a high of 8, indicating that sun protection methods should be in full swing. As the afternoon progresses, values slightly decrease, with the UV Index dropping to 6 by 3:00 PM and then gradually retreating to 1 by 7:00 PM. This hourly data serves as a reminder to stay vigilant about sun safety during the mid-day hours when UV exposure is at its highest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | 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 | 8 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal variation. The low-risk months occur in January, December, and parts of November and October, when the UV Index remains at 2 or 3, allowing for safer sun exposure with longer burn times of up to 45 minutes. February and March show moderate levels with indices of 4 and 5, necessitating caution with a burn time of 30 minutes. As we move into April and lasting through August, the UV Index spikes to 8 or 9, categorizing these months as very high risk, where the burn time drops to just 15 minutes. The risk begins to decline from September (UV Index 7) to 5 in October, calling for moderate sun safety measures again. For both residents and visitors, it is crucial to stay informed and take preventative steps against UV exposure, particularly during the peak months of April through August, such as wearing protective clothing and using sunscreen.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Two Harbors | 2 | 4 | 5 | 8 | 8 | 9 | 9 | 8 | 7 | 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 |