UV Index in Indiana, United States

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Indiana, where the varied climate and intense sun exposure can lead to increased risks of sunburn and skin damage. As the UV Index peaks throughout the day—reaching levels as high as 10 around noon—it becomes essential to monitor these levels to protect your skin health. With Indiana's Dfb climate, characterized by its humid continental weather, the sun's rays can be deceptively strong, especially during warmer months. By staying informed about UV levels, you can enjoy the outdoors while safeguarding yourself against harmful effects of UV radiation.

Hourly UV Index in Indiana

As the day begins, the UV Index gradually climbs, starting at a low 1 at 7:00 AM and reaching peak intensity of 10 between 12:00 PM and 1:00 PM. This is a crucial time when sun protection is essential. Following the peak, the index begins a gradual decline, dropping to 8 at 3:00 PM, then further to 4 by late afternoon at 5:00 PM. As evening approaches, the UV levels taper off to 2 at 6:00 PM and finally return to 1 by 7:00 PM. It’s clear that midday exposure should be approached with caution, while the morning and evening hours provide a gentler UV experience.

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	3	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	10	very high	15 min
14:00	9	very high	15 min
15:00	8	very high	15 min
16:00	6	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Indiana

Throughout the year, the UV Index experiences notable fluctuations, indicating varying levels of sun exposure risk. The high-risk months occur from March to September, peaking in May and June with a UV Index of 10, classified as very high. This signifies a decrease in safe sun exposure time to just 15 minutes. In contrast, the lower UV Index months are January (3) and December (2), categorized as moderate and low, with burn times of 30 and 45 minutes, respectively. Residents and visitors are advised to take protective measures such as wearing sunscreen, protective clothing, and seeking shade, especially during the summer months when UV levels are at their highest. It is essential to stay informed and adjust sun exposure accordingly to minimize the risk of skin damage.

Monthly Maximum UV Index for Indiana, United States

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

The table above highlights how UV exposure in Indiana 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.

Indiana'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
Indiana	3	5	7	9	10	10	10	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