UV Index in Sentinel, United States

Last updated: July 2, 2025

Understanding the UV Index in Sentinel, United States, is crucial for protecting your skin and overall health. With the region's Cfa climate zone bringing a mix of humidity and warmth, the risks of UV exposure are particularly pronounced during midday hours. Levels can reach a high of 12 between noon and 2 PM, emphasizing the importance of awareness in preventing sunburn and long-term skin damage. By keeping a close eye on UV levels, residents can better safeguard themselves against the harmful effects of ultraviolet radiation while enjoying the outdoors.

Hourly UV Index in Sentinel

As the sun rises, the UV Index starts off low at 1 from 7:00 AM to 9:00 AM, making it a safe time for outdoor activities. However, as the clock ticks toward 10:00 AM, the index surges to 5, signaling that precautions should be taken. The peak intensity hits at 12:00 PM, with the UV Index soaring to a striking 10. This is where sun safety becomes crucial, especially as it reaches its highest point of 12 by 1:00 PM and remains there until 2:00 PM. After noon, the index gradually declines, dropping to 5 by 5:00 PM, and then falling back to a safe level of 1 by 7:00 PM. Be sure to stay protected during those midday hours for the best outdoor experience!

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	10	very high	15 min
13:00	12	extreme	10 min
14:00	12	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 Sentinel

Throughout the year, the UV Index demonstrates notable seasonal changes, with the most intense exposure occurring from April to August. During these months, the UV Index reaches extreme levels (10-12), significantly reducing the burn time to just 10 minutes. March and September also pose risks with very high levels (8-10), allowing for a burn time of only 15 minutes. Consequently, February and October present high levels (6-7), where protective measures are still advised with adjusted burn times of 25 minutes. Residents and visitors should exercise caution and protect their skin, especially during the high-risk months of April through August, by using sunscreen, wearing protective clothing, and limiting sun exposure during peak hours.

Monthly Maximum UV Index for Sentinel, United States

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

The table above highlights how UV exposure in Sentinel 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.

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