UV Index in Florence, United States

Last updated: June 2, 2025

Understanding the UV Index in Florence, United States is essential for safeguarding your skin and overall health. With peak UV levels reaching a critical 13 around midday, awareness of these fluctuations can help you prevent sunburn and long-term skin damage. Florence's climate, categorized as BSk, brings unique challenges with variable UV exposure throughout the day. Knowledge of UV levels empowers residents and visitors alike to enjoy the sun responsibly while protecting their skin from harmful rays.

Hourly UV Index in Florence

The UV Index displays a dynamic pattern throughout the day, starting off with a mild 1 at 07:00 and gradually climbing as the sun rises. By 09:00, it reaches a moderate level of 5, but the sun really starts to shine by 11:00, peaking at an intense 12. The apex is reached at 13:00 with an impressive 13, indicating it’s crucial to take sun safety precautions. As the afternoon progresses, the index begins to decline, dropping back to 10 by 15:00 and continuing to cool down into the evening, finally settling back to 1 by 19:00. It’s a vivid reminder of how important it is to stay protected during the peak sun hours!

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
TimeUVICategoryTime to Burn
07:001low45 min
08:002low45 min
09:005moderate30 min
10:007high25 min
11:0010very high15 min
12:0012extreme10 min
13:0013extreme10 min
14:0012extreme10 min
15:0010very high15 min
16:007high25 min
17:004moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Florence

The UV Index notably varies throughout the year, highlighting significant seasonal changes in sun exposure. High-risk months include March through August, where the UV Index reaches very high to extreme levels, particularly in April and June, with burn times as brief as 10 minutes. During these months, residents and visitors are urged to take precautions such as wearing sunscreen, protective clothing, and seeking shade to minimize the risk of skin damage. In contrast, the UV Index is lower during the winter months of January and December, where it is classified as moderate, allowing for safer outdoor activities with burn times of 30 minutes. It is crucial to remain vigilant about sun safety as conditions can change rapidly, especially in the peak summer months.

Monthly Maximum UV Index for Florence, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Florence. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec479111213121210753
Data source: Statistical UV Index data for Florence, based on information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Compare Florence UV Index with Other United States Cities

The table above highlights how UV exposure in Florence compares to other major locations across United States. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Florence's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Chicago UVI34689101098642
Brooklyn UVI35681010998642
New York City UVI35681010998642
Los Angeles UVI46891011111010754
Florence479111213121210754
Houston UVI589111112121110975