UV Index in Grangeville, United States

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Grangeville, United States, where the climate features cool summers typical of the Cfb zone. With peak UV levels soaring to 10 during midday hours, awareness of UV exposure is essential for sunburn prevention and long-term skin health. Grangeville’s elevated UV risks, especially in the summer months, mean that taking precautions against harmful rays is vital for maintaining your well-being and enjoying the outdoors safely. Be sun-smart and stay informed to protect your skin while soaking up the beauty of your surroundings!

Hourly UV Index in Grangeville

The UV Index reaches its peak during the midday hours, showcasing a vibrant sun's intensity. Starting with a gentle 1 at 07:00, it gradually escalates to 3 by 08:00. As the day progresses, the index soars to 5 at 09:00, hitting 7 by 10:00. The real highlight occurs between 11:00 and 13:00, when it peaks at an impressive 10, urging everyone to take caution. Following this, the index begins a slow descent, dropping to 9 at 14:00 and gradually declining to 5 by 16:00. By 18:00, it reduces to 2, finally settling back at 1 by 19:00. This hourly data highlights the importance of sun safety during the peak hours of the day.

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	3	moderate	30 min
09:00	5	moderate	30 min
10:00	7	high	25 min
11:00	9	very high	15 min
12:00	10	very high	15 min
13:00	10	very high	15 min
14:00	9	very high	15 min
15:00	7	high	25 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Grangeville

During the year, UV exposure varies significantly, with high-risk months typically occurring from March to September. The UV Index peaks at 10 in June and July, indicating an extremely high risk of harm from unprotected sun exposure, with a burn time of just 15 minutes. April and May also present considerable risk, featuring very high UV levels of 8 and 9 respectively. In contrast, the winter months of December, November, and January exhibit lower UV Index levels, with December registering a low index of 2 and a burn time of 45 minutes. Residents and visitors are advised to take necessary precautions, such as wearing sunscreen, protective clothing, and seeking shade during high UV Index months, especially when exposure can lead to skin damage in as little as 15 minutes.

Monthly Maximum UV Index for Grangeville, United States

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

The table above highlights how UV exposure in Grangeville 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.

Grangeville'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
Grangeville	3	4	7	8	9	10	10	9	8	5	3	2
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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5