UV Index in Madison, United States

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Madison, United States, where sunny days can quickly turn into skin health concerns. The UV Index measures the strength of ultraviolet radiation from the sun, highlighting the importance of awareness in sunburn prevention and overall skin care. Given Madison's humid continental climate (Csa), typical UV exposure can pose significant risks, especially during peak hours when the index soars to 11 around midday. By staying informed on UV levels, you can protect yourself and your loved ones, ensuring enjoyable and safe outdoor activities year-round.

Hourly UV Index in Madison

The UV Index for today starts off mild, peaking at 1 by 7:00 AM, then gradually increases as the sun climbs higher in the sky. By 10:00 AM, it hits 6, indicating a moderate level of UV exposure. The intensity keeps climbing, reaching a maximum of 11 at 1:00 PM, making this the most crucial time for sun safety. As the afternoon progresses, the index begins to wane, dropping to 8 by 3:00 PM, then further to 2 by the evening, signalling a return to a safer UV environment. Remember, protecting your skin is vital during those peak hours of 10 AM to 2 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.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	2	low	45 min
09:00	4	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	8	very high	15 min
16:00	6	high	25 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Madison

Throughout the year, UV levels exhibit notable seasonal changes, with high-risk months occurring from April to August, where the UV Index reaches extreme levels of 11. Specifically, May, June, and July are critical periods, characterized by minimal burn times of just 10 minutes. In contrast, the winter months of January, February, November, and December display a lower UV Index, categorized as moderate (3-5), allowing up to 30 minutes of sun exposure without significant risk. As UV exposure increases, it is crucial for residents and visitors to take precautions, especially during high-risk months by wearing protective clothing, using sunscreen, and seeking shade during peak hours to effectively mitigate the risks of sunburn and long-term skin damage.

Monthly Maximum UV Index for Madison, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Madison. 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 Madison, 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 Madison UV Index with Other United States Cities

The table above highlights how UV exposure in Madison 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.

Madison'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
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
Madison	3	5	7	8	11	11	11	10	9	6	4	3
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