UV Index in Grundy, United States

Last updated: August 1, 2025

In Grundy, United States, awareness of the UV Index is crucial for safeguarding your skin health amidst its humid subtropical climate. Understanding UV levels can help you effectively prevent sunburn and lower the risk of long-term skin damage. With maximum UV Index values peaking at 11 during the hottest hours of the day, residents and visitors need to stay vigilant about sun exposure, especially between 10 AM and 2 PM when the sun's rays are strongest. By knowing the UV Index, you can enjoy the outdoors while taking the necessary precautions to protect yourself from harmful ultraviolet radiation.

Hourly UV Index in Grundy

At sunrise, the UV Index starts low at 1 at 07:00, gradually rising to 3 by 09:00. As the day progresses, the sun’s strength peaks with a remarkable 11 at both 13:00 and 14:00. This intense level suggests that protective measures are essential during these hours. By 15:00, the index begins to decline, settling at 9, and continues to decrease, dropping to 2 by 18:00 and returning to a safe 1 by dusk at 19:00. It's a day urging sun-worshippers to stay protected during those midday hours of utmost UV intensity.

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	2	low	45 min
10:00	4	moderate	30 min
11:00	7	high	25 min
12:00	9	very high	15 min
13:00	10	very high	15 min
14:00	10	very high	15 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 Grundy

Throughout the year, UV exposure levels vary significantly, with high-risk months typically occurring from March to August when the UV Index reaches its peak at 11, categorized as extreme. March and April also feature very high levels, making these months crucial for sun safety awareness. Visitors and residents should be particularly cautious during this period, applying sunscreen regularly, wearing protective clothing, and seeking shade during peak hours. In contrast, the months of January, November, and December present a moderate UV Index of 3 to 5, allowing for more relaxed precautions, though it's still important to remain mindful of sun exposure. Always check local UV forecasts and adjust your sun safety practices accordingly to protect your skin year-round.

Monthly Maximum UV Index for Grundy, United States

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

The table above highlights how UV exposure in Grundy 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.

Grundy'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
Grundy	3	6	8	10	11	11	11	10	9	7	5	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