UV Index in Decatur, United States

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Decatur, United States, as it provides essential information about the sun's harmful rays. Being aware of UV levels is vital for preventing sunburn and protecting skin health, particularly during the city's warm, humid climate. With UV exposure peaking in the early afternoon and reaching extreme levels—such as 11 at 1 PM—it's important for locals to stay informed about daily variations. By monitoring the UV Index, you can enjoy the sun safely and keep your skin protected, ensuring a healthier outdoor experience in beautiful Decatur.

Hourly UV Index in Decatur

At sunrise, the UV Index starts at a gentle 1 by 07:00, perfect for early risers enjoying the morning light. As the day progresses, it gradually climbs, reaching a moderate 3 by 09:00 and peaking at an intense 11 around 13:00 and 14:00. During these midday hours, the sun's rays are at their most powerful, making it crucial to seek shade or wear protective gear. Post-peak, the index begins to decline, descending to 5 by 17:00 and tapering off to 1 again by 19:00. This dynamic pattern highlights the importance of staying vigilant about sun protection, especially during peak hours!

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

Monthly UV Index Trends in Decatur

Throughout the year, UV exposure levels vary significantly, with high-risk months typically occurring from March to August when the UV Index reaches its peak at 11, categorized as extreme. March and April also feature very high levels, making these months crucial for sun safety awareness. Visitors and residents should be particularly cautious during this period, applying sunscreen regularly, wearing protective clothing, and seeking shade during peak hours. In contrast, the months of January, November, and December present a moderate UV Index of 3 to 5, allowing for more relaxed precautions, though it's still important to remain mindful of sun exposure. Always check local UV forecasts and adjust your sun safety practices accordingly to protect your skin year-round.

Monthly Maximum UV Index for Decatur, United States

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

The table above highlights how UV exposure in Decatur 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.

Decatur'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
Decatur	3	6	8	10	11	11	11	10	9	7	5	3
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