UV Index in Mill Creek, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Mill Creek, United States, where the climate often sees heightened sun exposure. With typical UV levels peaking at a significant 11 around noon, being aware of these fluctuations can play a vital role in preventing sunburn and safeguarding skin health. From May through August, the risk of UV-related damage increases due to the area's warm-summer humid continental climate (Dfb), making it essential to track these levels daily. By staying informed about the UV Index, you can enjoy the beautiful outdoors while taking the necessary precautions to protect yourself and your loved ones.

Hourly UV Index in Mill Creek

The UV Index dramatically peaks during the midday hours, showcasing a clear pattern of solar intensity. Starting from a mild 1 at 07:00, it steadily rises, reaching a notable 11 by 13:00. This peak signifies a high risk for skin damage, urging sun safety precautions. As the afternoon progresses, the index gradually declines—falling to 9 at 15:00, and decreasing further to 2 by 18:00. With the sun's intensity waning, the cooler evening hours promise a gentle close to the day, offering a more comfortable outdoor experience. Always stay vigilant during peak UV times!

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	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	10	very high	15 min
15:00	9	very high	15 min
16:00	7	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Mill Creek

Throughout the year, UV Index levels fluctuate significantly, reflecting seasonal changes in sun exposure. High-risk months for UV exposure typically occur from March to August, peaking in May, June, and July, when the UV Index reaches 11 (extreme) and the minimum burn time drops to 10 minutes. Visitors and residents should exercise caution during these months, particularly in the afternoons when the sun is at its strongest. April and August also present very high risk levels with a UV Index of 10. During lower risk months, from November to February, with moderate exposure levels (UV Index 3 to 5), a burn time of 30 minutes allows for a more relaxed approach to sun safety. However, year-round vigilance is advised, including protective clothing, sunscreen, and seeking shade during peak UV hours.

Monthly Maximum UV Index for Mill Creek, United States

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

The table above highlights how UV exposure in Mill Creek 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.

Mill Creek'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
Mill Creek	3	5	7	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