UV Index in Duncan, United States

Last updated: July 2, 2025

Understanding the UV Index in Duncan, United States, is essential for protecting your skin and overall health. With summer days often featuring high UV levels, knowledge of these fluctuations can help you prevent sunburns and long-term skin damage. In this Cfa climate zone, Duncan experiences a mix of sunshine and humidity, making it crucial to stay informed about daily UV exposure risks. Key times of concern include midday when the UV index peaks at a striking 11, signaling the need for protective measures. Stay sun-safe by monitoring the UV Index and taking appropriate precautions!

Hourly UV Index in Duncan

The UV Index throughout the day presents an intriguing pattern of increasing intensity. Starting from a low of 1 at 07:00, the index creeps up slowly until it reaches 3 by 09:00. As the sun climbs higher, there's a notable surge, peaking at 11 from 13:00 to 14:00, indicating a high level of UV exposure. After 15:00, the numbers begin to taper off, descending to 5 by 17:00 and dwindling to 1 by 19:00. This data underscores the importance of sun protection during the midday hours when the UV Index is at its highest — reaching an impressive 9 and 11 during the critical midday period.

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	9	very high	15 min
13:00	11	extreme	10 min
14:00	11	extreme	10 min
15:00	9	very high	15 min
16:00	7	high	25 min
17:00	5	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Duncan

As the seasons change, the UV Index demonstrates considerable variation, impacting burn potential and risk levels for skin exposure. The highest risk months occur from March to August, with values peaking at 11 during May, June, and July, indicating an extreme exposure category with a burn time of just 10 minutes. February marks a shift into a high risk category, while September through November gradually decreases the UV levels, transitioning back to moderate by December. It is crucial for visitors and residents alike to exercise caution during these high-risk months by wearing protective clothing, applying sunscreen regularly, and seeking shade to mitigate the potential for skin damage.

Monthly Maximum UV Index for Duncan, United States

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

The table above highlights how UV exposure in Duncan 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.

Duncan'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
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Duncan	4	7	8	10	11	11	11	10	9	8	6	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5