UV Index in Hazelwood, United States

Last updated: July 2, 2025

Understanding the UV Index in Hazelwood, United States, is crucial for safeguarding your skin and overall health. With peak UV levels reaching a high of 11 during the sunny midday hours, awareness of these levels can help prevent painful sunburns and reduce the risk of long-term skin damage. Hazelwood's temperate climate, classified as Cfb, typically enjoys a good amount of sunshine, making it essential for residents to stay informed about UV exposure risks. By keeping track of the UV Index daily, you can enjoy the outdoors while protecting your skin from harmful rays!

Hourly UV Index in Hazelwood

The UV Index for the day starts gently, with values peaking at 1 from 7:00 AM to 8:00 AM. As the sun rises higher, the index escalates, reaching 3 by 9:00 AM. A significant surge occurs between 10:00 AM and 2:00 PM, where it escalates dramatically, peaking at a striking 11 from 1:00 PM to 2:00 PM—a clear indication to seek shade and protect your skin. The afternoon sees a gradual decline, with figures dropping to 10 at 3:00 PM, then to 7 at 4:00 PM. As the day winds down, the UV Index returns to safer levels, resting at 1 by 7:00 PM. Keep in mind, high UV levels call for precautions, especially in the midday sun!

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	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