UV Index in Dallas, United States

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Dallas, Texas, a city known for its sunny climate and high levels of UV exposure. As UV radiation can lead to sunburn and long-term skin health issues, knowing the daily UV levels can help you take necessary precautions. With peak UV Index values often reaching a significant 10 during midday, it's essential to be aware of when the sun's rays are most intense to protect yourself and your loved ones. Whether you're enjoying outdoor activities or just running errands, being informed about Dallas's UV levels allows you to enjoy the sunshine while safeguarding your skin from harmful effects.

Hourly UV Index in Dallas

As the day unfolds, the UV Index begins its ascent with a gentle start at 1 from 07:00 to 08:00. By 09:00, it jumps to 3, signaling increased sun intensity. The real peak occurs between 12:00 and 14:00, where the index reaches a striking 10, reminding us to stay protected under the sun. Afterwards, the index gradually slips, dipping to 6 by 16:00, and further down to a mellow 1 by 19:00. It's crucial to be mindful of these fluctuations, especially during the midday hours when UV radiation poses the highest risk. Enjoy the rays but remember to stay safe!

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	8	very high	15 min
12:00	10	very high	15 min
13:00	10	very high	15 min
14:00	10	very high	15 min
15:00	9	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 Dallas

Throughout the year, the UV Index exhibits significant variations, with high-risk months occurring from March to August, where the index reaches very high to extreme levels. In March and April, the UV Index peaks at 10, and it escalates to 11 in June and July, indicating an urgent need for sun protection since the burn time drops to just 10 minutes during these months. The risk decreases in the fall and winter, with November and December showing moderate levels (UV Index of 5 and 3, respectively) and extended burn times of 30 minutes. To ensure safety, visitors and residents are advised to take extra precautions during the high-risk months by wearing sunscreen, protective clothing, and seeking shade, while enjoying outdoor activities to minimize the risk of skin damage.

Monthly Maximum UV Index for Dallas, United States

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

The table above highlights how UV exposure in Dallas 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.

Dallas'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
Dallas	4	6	8	10	10	11	11	10	9	8	5	3
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5