UV Index in Huntsville, United States

Last updated: July 2, 2025

In Huntsville, United States, being mindful of the UV Index is essential for safeguarding your skin and overall health. Understanding the UV levels can help you prevent sunburn and long-term skin damage, especially with Huntsville's Dfb climate that features warm summers with significant sun exposure. From late morning to early afternoon, UV levels can reach as high as 12, emphasizing the need for protective measures. Stay informed and enjoy the sunshine safely by paying attention to the UV Index!

Hourly UV Index in Huntsville

At dawn, the UV Index starts off gentle, peaking at 1 by 07:00. As the sun rises higher, its intensity escalates dramatically, reaching 6 by 10:00 and soaring to a blistering 12 at 13:00—the highest point of the day. From then, the index begins a gradual descent, tapering to 10 by 15:00, followed by 8 at 16:00, and finally falling back to 1 by 19:00. This dynamic pattern highlights the importance of sun protection during midday hours, when UV exposure is at its most intense, especially between 11:00 and 14:00. Stay safe and enjoy the sunshine responsibly!

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	12	extreme	10 min
14:00	11	extreme	10 min
15:00	10	very high	15 min
16:00	8	very high	15 min
17:00	5	moderate	30 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Huntsville

The UV index exhibits significant seasonal variation, with high-risk months identified primarily from March to August, where values reach their peak at 12 during June and July, classified as extreme exposure with a burn time of only 10 minutes. Visitors and residents should exercise caution during these months, minimizing direct sun exposure during peak hours and wearing protective clothing, sunglasses, and sunscreen. As the year progresses, the UV index decreases, with moderate levels observed in January, February, November, and December, allowing for longer burn times of 30 minutes but still necessitating sun protection. Be vigilant, especially in the spring and summer, to ensure safety and prevent sunburn.

Monthly Maximum UV Index for Huntsville, United States

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

The table above highlights how UV exposure in Huntsville 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.

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