UV Index in Saint Francis, United States

Last updated: August 1, 2025

Understanding the UV Index is crucial for residents of Saint Francis, United States, especially given the area's BSk climate which can lead to significant UV exposure, particularly during the sun's peak hours. By being aware of UV levels, you can take proactive steps to prevent sunburn and protect your skin health, ensuring enjoyable outdoor activities without the worry of harmful effects. With UV Index values that soar to 11 during midday, knowing when to seek shade or apply sunscreen is essential for safeguarding yourself and your loved ones from the sun's intense rays.

Hourly UV Index in Saint Francis

Throughout the day, the UV Index experiences a notable rise, peaking at 11 between 1:00 PM and 2:00 PM, indicating an intense level of ultraviolet radiation. Starting off with a mild 1 at 7:00 AM and 8:00 AM, the index gradually climbs to 2 by 9:00 AM. As the sun reaches its zenith, the index skyrockets to 9 at 12:00 PM and continues to intensify, hitting its maximum of 11 in the early afternoon. After this peak, the UV Index begins to taper off, dropping to 6 by 5:00 PM and concluding the day at a more manageable 2 by 7:00 PM. It's essential to stay protected during those high exposure hours from 11 AM to 3 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
11:006high25 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
19:001low45 min

Monthly UV Index Trends in Saint Francis

Throughout the year, the UV Index exhibits notable seasonal variations, with high-risk months typically occurring from March to September. During these months, the UV Index escalates to levels categorized as high (7), very high (8-10), and extreme (11-12), particularly peaking in June with an Index of 12, indicating an urgent need for protective measures. Burn times drastically reduce to as low as 10 minutes in the peak summer months, underscoring the importance for residents and visitors to prioritize sun safety. As a precaution, it is advisable to limit sun exposure during these high UV periods, especially between the hours of 10 AM and 4 PM. During lower risk months, notably January, February, and December, UV levels remain moderate, allowing for safer outdoor activities, though sun protection is still recommended as UV rays can cause cumulative skin damage over time.

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.
JanFebMarAprMayJunJulAugSepOctNovDec4579101211109643
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 Francis4579101211109643
Los Angeles UVI46891011111010754
Houston UVI589111112121110975