UV Index in Chapman, United States

Last updated: June 2, 2025

Understanding the UV Index in Chapman, United States is essential for protecting your skin and overall health. As the sun's rays can quickly lead to sunburn and long-term skin damage, being aware of UV levels helps you take precautionary measures when enjoying the great outdoors. In Chapman, located in a Cfa climate zone, residents can expect varying UV exposure, with midday levels often peaking at 11—a significant risk for potential skin harm. By staying informed about the UV Index, you can safeguard your skin and enjoy sunshine responsibly.

Hourly UV Index in Chapman

As the sun rises, the UV Index begins at a gentle 1 at 07:00 and 08:00, indicating minimal sun exposure risk. However, by 09:00, it jumps to 3 and continues to climb rapidly, reaching a significant 8 by 11:00. High noon brings the peak UV index of 10 at 12:00, followed by an intense 11 from 13:00 to 14:00, signaling a critical time for sun protection. As the afternoon wanes, the index starts to decline, dropping to 9 at 15:00, then decreasing to 7 at 16:00 and 5 by 17:00. Post-sunset, the index falls sharply to 3 at 18:00 and settles back at 1 as the day concludes at 19:00. This data underscores the importance of staying shielded from midday sun when the UV radiation is at its strongest.

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	9	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 Chapman

Throughout the year, seasonal UV changes reflect a pattern of increasing intensity from winter to summer and a decline toward winter again. High-risk months occur from March to August, peaking in June and July when the UV Index reaches an extreme level of 11, with a burn time of just 10 minutes. During these months, residents and visitors should take extra precautions, such as seeking shade, wearing protective clothing, and applying sunscreen regularly, especially between 10 a.m. and 4 p.m. As the fall approaches, UV levels gradually decrease, but caution should still be exercised in September and early October when UV values remain elevated. Overall, ensuring proper skin protection is crucial during the high-risk periods to mitigate the dangers of UV exposure.

Monthly Maximum UV Index for Chapman, United States

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

The table above highlights how UV exposure in Chapman 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.

Chapman'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
Chapman	3	5	6	9	10	11	11	10	9	6	4	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