UV Index in Collinsville, United States

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Collinsville, United States, where sunny days can lead to significant UV exposure. With a Dfb climate, locals need to be aware of varying UV levels, especially during peak hours when the index can rise to 10, indicating a very high risk of harm from unprotected sun exposure. Knowledge of these levels is essential not just for preventing painful sunburns, but also for maintaining long-term skin health. By keeping track of the UV Index, you can enjoy the outdoors more safely, ensuring that your adventures in the vibrant Collinsville sun are both enjoyable and protective!

Hourly UV Index in Collinsville

The UV Index today showcases a dynamic sun activity that peaks dramatically as the day unfolds. Starting gently at 1 at 07:00, it swiftly climbs to 10 by 13:00, marking the sun's most intense rays during midday. As the afternoon progresses, the index dips, dropping to 5 by 16:00 and settling back to 1 by 19:00 as the sun begins to wane. This rhythm underscores the importance of sun safety: ensure protection during peak hours from 11:00 to 14:00 when the UV index is at its highest! Enjoy the sunshine, but don't forget your sunscreen!

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	9	very high	15 min
13:00	10	very high	15 min
14:00	9	very high	15 min
15:00	7	high	25 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Collinsville

Throughout the year, UV exposure varies significantly, peaking in the late spring and summer months. April to August represent the high-risk period, with UV Index values reaching 10; indicating a very high exposure category and a burn time as short as 15 minutes. Visitors and residents should exercise caution and take protective measures, such as wearing sunscreen and protective clothing during these months. In contrast, January and December have moderate and low UV levels, respectively, with longer burn times of 30 to 45 minutes. Action is still advisable during these months, but the intensity is notably lower, allowing for safer outdoor activities. Overall, awareness of seasonal UV changes is essential for protecting skin health year-round.

Monthly Maximum UV Index for Collinsville, United States

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

The table above highlights how UV exposure in Collinsville 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.

Collinsville'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
Collinsville	3	5	6	8	10	10	10	9	8	6	4	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