UV Index in Saint Francis, United States

Last updated: June 2, 2025

Understanding the UV Index in Saint Francis, United States is crucial for protecting your skin and overall health. With its Dfb climate, residents often experience significant UV exposure, especially during peak hours. Recognizing the UV levels can help prevent sunburn and reduce long-term skin damage. On sunny days, the index can climb to as high as 9, indicating a need for proactive sun safety measures. Stay informed and take care of your skin to enjoy the beautiful outdoors in Saint Francis!

Hourly UV Index in Saint Francis

The UV Index data reveals a gradual ascent in solar intensity as the day progresses, peaking at a significant 9 between 1:00 PM and 2:00 PM. Early morning hours show a low risk with values of 1 at 7:00 AM and 8:00 AM. As the sun rises higher, the index escalates to a moderate 5 by 10:00 AM and reaches high risk levels of 7 at 11:00 AM. The intensity peaks at 12:00 PM, hitting 8, and maintains a strong 9 for the following hour. Post-peak, the index gradually declines, returning to a safer 2 by 7:00 PM. For outdoor enthusiasts, it’s essential to stay protected from midday to early afternoon when the sun's rays are most intense!

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.
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	7	high	25 min
17:00	5	moderate	30 min
18:00	3	moderate	30 min
19:00	2	low	45 min

Monthly UV Index Trends in Saint Francis

Throughout the year, the UV Index experiences significant seasonal changes, with the highest risk months occurring from April to August when the index reaches levels categorized as very high (8-9). In these months, the recommended burn time drops to as little as 15 minutes, indicating a pressing need for protection against harmful UV radiation. March begins the transition with a moderate index of 5, and by September, the risk diminishes to high (7). It is advisable for visitors and residents to take necessary precautions, such as wearing sunscreen and protective clothing, especially during the peak months of April to August, to minimize the risk of sunburn and long-term skin damage. Conversely, January and December present lower UV levels with an index of 2, allowing for safer outdoor activities with longer burn times of 45 minutes.

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.

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.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Saint Francis	2	3	5	8	8	9	8	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