UV Index in Grantville, United States

Last updated: May 3, 2025

In Grantville, United States, awareness of the UV Index is essential for protecting your skin and maintaining overall health. Understanding UV levels can help prevent sunburns and reduce the risk of long-term skin damage, particularly in a climate characterized by hot summers typical of the Cfa zone. With peak UV Index values reaching up to 11 around midday, residents and visitors must be vigilant about sun safety. By staying informed about the daily UV forecast, you can enjoy the outdoors responsibly while safeguarding your skin from harmful UV rays.

Hourly UV Index in Grantville

The UV Index throughout the day presents an intriguing pattern of increasing intensity. Starting from a low of 1 at 07:00, the index creeps up slowly until it reaches 3 by 09:00. As the sun climbs higher, there's a notable surge, peaking at 11 from 13:00 to 14:00, indicating a high level of UV exposure. After 15:00, the numbers begin to taper off, descending to 5 by 17:00 and dwindling to 1 by 19:00. This data underscores the importance of sun protection during the midday hours when the UV Index is at its highest — reaching an impressive 9 and 11 during the critical midday period.

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	7	high	25 min
12:00	9	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	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Grantville

As the seasons change, so does the UV Index, which significantly impacts exposure levels throughout the year. January starts with a moderate UV Index of 4, allowing for a burn time of 30 minutes. However, February ramps up to a high index of 7, with a reduced burn time of 25 minutes. The peak months, from March through August, experience extreme UV levels, particularly in May and June, where the UV Index reaches 11 and burn times shrink to just 10 minutes. September and October see a slight decrease, yet still maintain a very high index of 9 and 8, respectively. The year concludes with lower levels in November and December. Visitors and residents should take special care during the high-risk months from March to August, ensuring proper sun protection measures, such as wearing sunscreen, hats, and protective clothing, to mitigate the risk of UV-related harm.

Monthly Maximum UV Index for Grantville, United States

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

The table above highlights how UV exposure in Grantville 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.

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