UV Index in Yucaipa, United States

Last updated: July 2, 2025

In Yucaipa, United States, awareness of the UV Index plays a crucial role in protecting your skin from harmful ultraviolet radiation. Understanding the daily UV levels is essential for preventing sunburn and promoting long-term skin health. With a Mediterranean climate (Csa) that often sees high UV exposure—particularly during the peak hours of 10 AM to 2 PM—residents must stay informed to minimize risks. As UV levels can reach a maximum of 12 around noon, taking proactive measures can ensure a healthy and enjoyable experience under the sun.

Hourly UV Index in Yucaipa

The UV Index for the day showcases a lively sun that reaches its peak intensity around noon, with a soaring score of 12. From 07:00, when the index starts at a mild 1, it steadily rises, crossing the 5 mark by 09:00 and hitting a robust 10 by 11:00. As the sun reaches its zenith, it maintains an exceptional 12 from 12:00 to 13:00, indicating a high risk of harm from unprotected sun exposure. Gradually, the index begins to decline, dropping to 9 at 15:00 and further to 3 by 17:00. As evening approaches, the index gently tapers off to 1 by 19:00, signaling a return to safer sun exposure levels. A day to enjoy the sun, but with caution during those peak hours!

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

Monthly UV Index Trends in Yucaipa

As we observe seasonal changes in the UV Index, it becomes clear that higher levels of ultraviolet radiation occur during the warmer months. The high-risk months peak from March to August, with May and June reaching extreme levels (UV Index 11-12) and burn times as low as 10 minutes. Visitors and residents are strongly advised to take precautions during these months by seeking shade, wearing protective clothing, and using sunscreen, especially between 10 AM and 4 PM when UV exposure is at its highest. January, November, and December are comparatively safer, with moderate UV levels (Index 4-5) and longer burn times of 30 minutes. Staying informed about the UV Index is essential for maintaining skin health year-round.

Monthly Maximum UV Index for Yucaipa, United States

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

The table above highlights how UV exposure in Yucaipa 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.

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