UV Index in Greenfield, United States

Last updated: May 3, 2025

In Greenfield, United States, staying aware of the UV Index is crucial for protecting your skin from harmful solar radiation. Understanding UV levels not only helps you prevent painful sunburns but also plays a vital role in maintaining long-term skin health. Greenfield, situated in a Dfb climate zone, experiences significant variations in UV exposure throughout the day, with peaks reaching a challenging level of 9 around midday. Armed with this knowledge, residents can enjoy outdoor activities while taking the necessary precautions to safeguard their skin against the sun's intensity.

Hourly UV Index in Greenfield

The UV Index throughout the day shows a clear peak, starting from a gentle 1 at 07:00 AM, gradually rising to a moderate 2 by 08:00 AM. As the sun climbs higher, the index escalates sharply, reaching 6 at 10:00 AM and peaking at an impressive 9 from 12:00 PM to 1:00 PM. This period represents the height of midday sun exposure, highlighting the importance of protection. After this zenith, the index begins to decline, with a gradual drop to 6 by 3:00 PM, then 4 at 4:00 PM, ultimately settling back to 1 by the evening hours. Overall, it’s a day that encourages careful sun safety practices, especially 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	4	moderate	30 min
10:00	6	high	25 min
11:00	7	high	25 min
12:00	9	very high	15 min
13:00	9	very high	15 min
14:00	8	very high	15 min
15:00	6	high	25 min
16:00	4	moderate	30 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Greenfield

As the seasons change, so do UV levels, highlighting periods of higher risk for sun exposure. From January to March, the UV Index remains low to moderate, with February seeing an increase. April to August marks the peak high-risk months, featuring very high UV levels, particularly in June and July, where the burn time drops to a remarkable 15 minutes. September transitions into a high UV category, while October to December see a gradual decline, returning to low risk by year's end. To protect yourself, especially during the high UV months of April through August, it is crucial to wear sunscreen, protective clothing, and seek shade to minimize exposure. Be particularly vigilant during the summer months when burn time is significantly reduced.

Monthly Maximum UV Index for Greenfield, United States

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

The table above highlights how UV exposure in Greenfield 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.

Greenfield'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
Greenfield	2	4	5	8	9	10	10	9	7	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