UV Index in Denison, United States

Last updated: August 1, 2025

Understanding the UV Index is crucial for residents of Denison, United States, where sunny days invite outdoor activities but also bring exposure risks. Being aware of UV levels empowers you to prevent sunburn and protect your skin health, reducing the long-term risks of skin damage. With a Dfa climate, Denison experiences varied UV exposure throughout the year, peaking at a moderate level of 10 from noon to 2 PM during the summer months. Stay informed about the UV Index to enjoy the sunshine safely while safeguarding your well-being!

Hourly UV Index in Denison

The UV index begins its ascent at 07:00, starting at a gentle 1, then climbs gradually through the morning. By 10:00, it reaches a moderate 5, but from 11:00 onwards, the sun's intensity becomes pronounced, peaking at an impressive 10 between 13:00 and 14:00. After this zenith, the index dips to 8 at 15:00 and continues its decline, settling back to 2 by 18:00. As the day winds down into the evening, the UV index drops to a low 1 by 19:00, signaling a return to safer sun exposure levels. Enjoy the sunshine while staying protected during the high points!

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	2	low	45 min
10:00	4	moderate	30 min
11:00	6	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	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 Denison

Throughout the year, UV Index levels exhibit notable seasonal changes, indicating varying degrees of sun exposure risk. High-risk months typically occur from April to August, with the highest UV Index peaking at 11 in June, classified as extreme exposure, where the recommended burn time is a mere 10 minutes. Visitors and residents should take precautionary measures during these months, such as wearing protective clothing, using broad-spectrum sunscreen, and seeking shade during peak sunlight hours. As we transition into September and October, UV levels decrease, but caution remains essential during this time as well. Conversely, from November to February, the UV Index is lower, with January at 3 and December at 2, where sun exposure poses a much-reduced threat. Ensuring awareness of these seasonal fluctuations can significantly enhance sun safety practices for everyone.

Monthly Maximum UV Index for Denison, United States

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

The table above highlights how UV exposure in Denison 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.

Denison'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
Denison	3	5	6	8	10	11	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