UV Index in Saint Francis, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Saint Francis, United States, where the climate can lead to significant sun exposure risks. As the UV levels reach their peak in the middle of the day, awareness of these fluctuations is essential for preventing sunburn and safeguarding your skin health. With typical summer days yielding high UV readings—often climbing to 10 and beyond—it's vital to take proactive measures to protect yourself from harmful rays that can lead to skin damage and increase the risk of skin cancer. Stay informed and keep your skin safe as you enjoy the sunny days that are characteristic of our Dwa climate!

Hourly UV Index in Saint Francis

As the day unfolds, the UV Index rises sharply, peaking at a dramatic 10 between 1:00 PM and 2:00 PM—a clear indication that sun protection is crucial during these hours. Starting from a modest 1 at 7:00 AM, the index climbs steadily, reaching 4 by 10:00 AM. By 11:00 AM, it escalates to 7, and just before noon, it hits 9, urging outdoor enthusiasts to take cover or apply sunscreen. The afternoon sees a slight decline, with values tapering to 5 by 5:00 PM and further down to 2 as the sun sets. This dynamic pattern highlights the importance of being sun-smart, especially during the peak hours of 12:00 PM to 2:00 PM.

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
08:001low45 min
09:002low45 min
10:004moderate30 min
11:007high25 min
12:009very high15 min
13:0010very high15 min
14:0010very high15 min
15:009very high15 min
16:007high25 min
17:005moderate30 min
18:003moderate30 min
19:002low45 min

Monthly UV Index Trends in Saint Francis

Throughout the year, UV index levels exhibit significant seasonal variation, with high-risk months primarily ranging from April to September. During this period, the UV Index escalates from 8 in April to a peak of 11 in June, classifying June as having an extreme exposure category where one can burn in just 10 minutes. As summer progresses, the UV Index remains very high, with safe exposure times dwindling to 15 minutes by July and August. As fall approaches, the risk diminishes, with levels dropping to moderate in October, November, and December. For visitors and residents, it is crucial to take precautions, especially during the high UV months like May, June, and July, by wearing protective clothing, seeking shade, and applying sunscreen to minimize the risk of skin damage.

Monthly Maximum UV Index for Saint Francis, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Saint Francis. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec356891110108543
Data source: Statistical UV Index data for Saint Francis, 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 Saint Francis UV Index with Other United States Cities

The table above highlights how UV exposure in Saint Francis 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.
Saint Francis'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
Saint Francis356891110108543
Los Angeles UVI46891011111010754
Houston UVI589111112121110975