UV Index in Hazelwood, United States

Last updated: June 2, 2025

Being aware of the UV Index is crucial for residents of Hazelwood, United States, where the climate falls within the Cfb zone, characterized by moderate temperatures and varying sunlight exposure throughout the year. Understanding UV levels is essential not only for preventing sunburn but also for maintaining healthy skin in the long run. During peak hours, especially between 11 AM and 3 PM, the UV Index can reach elevated levels, with a maximum of 11—indicating a very high risk of harm from unprotected sun exposure. By staying informed about these risks, Hazelwood residents can enjoy the outdoors while protecting their skin and overall health.

Hourly UV Index in Hazelwood

The UV Index is a crucial indicator of sun exposure, peaking dramatically throughout the day. Starting at a mild 1 by 07:00, it escalates swiftly, reaching 3 by 09:00. The intensity rises further, hitting 5 at 10:00 and surging to a striking 8 by 11:00. The sun's power truly culminates at 12:00, with an impressive 10 on the scale, and maintains a scorching 11 through 13:00 and 14:00. As the afternoon progresses, values begin to decline from 10 at 15:00 to 7 by 16:00, and gently taper off to 5 at 17:00, finally dwindling back to 3 by 18:00 and 1 come 19:00. Stay protected during peak hours to enjoy the sunshine safely!

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	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 Hazelwood

As the year progresses, the UV Index sees significant seasonal changes, peaking from April through August when it reaches extreme levels of 11 to 12, resulting in very short burn times of just 10 minutes. March marks the onset of higher risks with a very high index of 8, while the most critical months are April and May, where the UV exposure can be especially harmful. Conversely, January and December present lower risks with moderate levels, where burn times can extend to 30 minutes. Visitors and residents are advised to take precautionary measures during high-risk months—from March to October—by applying sunscreen, wearing protective clothing, and seeking shade during peak hours to mitigate skin damage.

Monthly Maximum UV Index for Hazelwood, United States

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

The table above highlights how UV exposure in Hazelwood 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.

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