UV Index in Foresthill, United States

Last updated: July 2, 2025

Being aware of the UV Index in Foresthill, United States is crucial for protecting your skin and overall health. Understanding UV levels helps prevent sunburn and long-term skin damage, ensuring that you enjoy the sunshine safely. With Foresthill's Mediterranean climate, characterized by hot, dry summers, UV exposure can peak at levels as high as 11 during midday hours. It's essential to stay informed about the UV Index to take necessary precautions and enjoy the beautiful outdoors without health risks!

Hourly UV Index in Foresthill

The UV Index today paints a vivid picture of solar intensity, peaking dramatically between 12:00 PM and 2:00 PM with a striking 11—a warning to seek shade and protect skin. Starting the day at a gentle 1 at 7:00 AM, the index gradually climbs, reaching 4 by 9:00 AM and escalating to 9 by 11:00 AM. As the sun reaches its zenith, the index hits 11, indicating extreme conditions that persist for a solid three hours. Following this midday blast, it gracefully declines to 6 by 4:00 PM, before tapering off to a safer 1 by the evening. Remember to stay sun-smart 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	4	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	11	extreme	10 min
15:00	9	very high	15 min
16:00	6	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 Foresthill

The UV Index exhibits significant seasonal variation, with high-risk months typically occurring from March to August. During this period, peak UV Index values reach 11 in May and June, categorizing these months as extreme, where sensitive individuals can burn in just 10 minutes. March and April see very high levels (UV Index 8 and 9), reducing safe exposure times to 15 minutes. As summer transitions to fall, September and October remain relatively high at 9 and 7, respectively, allowing for burn times of 15 and 25 minutes. Conversely, the winter months of January, February, November, and December report moderate levels (UV Index 3 to 5), with burn times of 30 minutes. Visitors and residents should take these variations into account, especially during high-risk months; protection against UV exposure—such as wearing sunscreen, hats, and protective clothing—is strongly recommended to minimize skin damage.

Monthly Maximum UV Index for Foresthill, United States

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

The table above highlights how UV exposure in Foresthill 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.

Foresthill'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
Foresthill	3	5	8	9	11	12	11	10	9	7	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