UV Index in Deerfield, United States

Last updated: July 2, 2025

Understanding the UV Index in Deerfield, United States, is crucial for safeguarding your skin and enhancing your overall health. In this picturesque Dfb climate, the sun's rays can be particularly intense, especially during the peak hours of midday. Awareness of UV levels not only helps in preventing painful sunburns but also plays a vital role in long-term skin health by reducing the risk of skin cancer. With UV Index values soaring to 9 at noon and early afternoon, it's important to take precautions when enjoying Deerfield's beautiful outdoor spaces, ensuring you enjoy the sun while staying protected.

Hourly UV Index in Deerfield

The UV Index today presents a notable climb as the sun ascends, peaking at 9 around noon and early afternoon, signaling very high sun exposure risk. Starting gently at 1 by 7 AM, the index rises steadily, reaching 6 by 10 AM and then surging to its maximum of 9 between 12 PM and 1 PM. Early afternoon brings a slight decline to 8 at 2 PM, followed by a gradual decrease through the later hours, settling back to 1 by 7 PM. With this trajectory, it's crucial to take precautions during the peak hours of 11 AM to 1 PM, ensuring skin protection against harmful UV rays. Stay safe and enjoy the sun wisely!

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	4	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	9	very high	15 min
13:00	9	very high	15 min
14:00	8	very high	15 min
15:00	7	high	25 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Deerfield

Throughout the year, UV levels fluctuate significantly, with notable increases during the spring and summer months. High-risk months for UV exposure occur from April to August, when the UV Index reaches its peak, particularly in June at 10, indicating a very high exposure category where burn time is only 15 minutes. In contrast, the winter months of January and December present lower risks, with a UV Index of 2 and burn times of 45 minutes. As UV levels change, residents and visitors are advised to take precautions during the warmer months, such as wearing protective clothing, applying sunscreen regularly, and seeking shade during peak sun hours. In the cooler months, while the risk is lower, it's still wise to remain vigilant, particularly during midday hours when UV rays can still pose a threat.

Monthly Maximum UV Index for Deerfield, United States

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

The table above highlights how UV exposure in Deerfield 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.

Deerfield'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
Deerfield	2	4	6	8	9	10	9	9	7	5	3	2
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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5