UV Index in Geyserville, United States

Last updated: May 3, 2025

In Geyserville, United States, awareness of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels can help you take proactive steps to prevent sunburn and reduce the long-term risks of skin damage. With Geyserville's mild Csb climate, residents and visitors alike should be particularly mindful of elevated UV exposure during peak hours, especially when indices reach as high as 11 around midday. Stay informed and enjoy the sun safely!

Hourly UV Index in Geyserville

As the sun rises, the UV Index begins at a mild 1 at 07:00, gradually escalating throughout the morning. By 10:00, it peaks at a robust 6, and then skyrockets to its maximum of 11 by 13:00—a time when protective measures become essential. The intensity starts to wane in the afternoon, dropping to 8 at 15:00, and further retreating to a gentle 1 by evening. It's a classic case of the sun's power, reminding us to stay vigilant and shield ourselves 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	3	moderate	30 min
10:00	6	high	25 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	8	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 Geyserville

As the seasons change, so do the UV Index levels, which peak during the summer months. January and December see a moderate UV Index of 3, allowing for longer burn times of 30 minutes, while February holds steady at 5. The risk begins to rise in March with a high UV Index of 7 and a reduced burn time of 25 minutes. From April through July, the UV Index escalates to very high and extreme levels peaking at 11, resulting in very short burn times of just 10 minutes. August and September maintain a very high Index of 10 and 9, respectively, with burn times of 15 minutes. October decreases to a high level of 7, while risk subsides again in November and December. Visitors and residents are advised to take necessary precautions, especially during the high-risk months of April to September, by wearing protective clothing, applying sunscreen, and avoiding sun exposure during peak hours.

Monthly Maximum UV Index for Geyserville, United States

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

The table above highlights how UV exposure in Geyserville 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.

Geyserville'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
Geyserville	3	5	7	8	11	11	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