UV Index in Roff, United States

Last updated: July 2, 2025

In Roff, United States, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. With a Cfa climate that brings warm summers and high sun exposure, residents should be vigilant about UV levels, especially during midday when the index peaks at a dangerous 11. By staying informed about daily UV fluctuations, Roff's community can better protect themselves against harmful rays and enjoy outdoor activities safely. Whether you're gardening, playing sports, or just soaking up the sun, knowing when to seek shade or apply sunscreen can make all the difference for your skin’s well-being.

Hourly UV Index in Roff

The UV Index for the day showcases a dramatic increase in intensity as the sun climbs higher in the sky. Starting at a mild 1 at 07:00, it remains low throughout the morning, only reaching 3 by 09:00. However, by 11:00, the index skyrockets to 8, peaking at an intense 11 from 13:00 to 14:00. As the afternoon wanes, the UV levels gradually decrease, dropping to 4 by 17:00 and tapering off to 1 once again by 19:00. It's clear that midday hours pose the greatest risk for sun exposure, making it crucial to take precautions during the peak hours from 11:00 to 14:00.

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	10	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 Roff

During the year, there are significant fluctuations in the UV Index, which can affect both visitors and residents. The highest risk months for UV exposure occur from June to August, where the index peaks at 11, indicating an extreme risk level with a burn time of just 10 minutes. As the summer months progress into early fall, the UV index begins to decline, dropping to 10 in September and further decreasing to 7 in October. January through November shows relatively lower UV levels, with January and December experiencing a moderate index of 4. It is essential for everyone to take precautions during high-risk months, such as wearing sunscreen, protective clothing, and seeking shade, to minimize skin damage and ensure safe outdoor activities.

Monthly Maximum UV Index for Roff, United States

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

The table above highlights how UV exposure in Roff 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.

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