UV Index in Hempstead, United States

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Hempstead, United States, where sunny days are abundant, and the risk of overexposure to ultraviolet rays is significant. As the UV levels soar, particularly between 11:00 AM and 2:00 PM, being aware of these fluctuations can help prevent sunburn and protect your skin health. In Hempstead's Cfa climate zone, where humid subtropical conditions prevail, the potential for skin damage increases with high UV Index readings, making it essential to track these levels to enjoy the outdoors safely. Stay informed, stay protected, and embrace the warmth of Hempstead wisely!

Hourly UV Index in Hempstead

The UV Index for the day showcases a striking pattern, starting moderate at 7:00 AM with a value of 1. As the sun climbs higher, the index steadily rises, hitting 3 by 9:00 AM, and then surging to a peak of 11 between 1:00 PM and 2:00 PM. This indicates a high risk of harm from unprotected sun exposure during midday. Following the peak, the UV Index gradually declines to 4 by 5:00 PM and further decreases to 1 by 7:00 PM, emphasizing the critical importance of sun protection during the intense midday hours. It’s advisable to seek shade and wear sunscreen if you're outside during the peak 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	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	9	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 Hempstead

As the seasons change, so do the UV Index levels, which can significantly impact sun safety for visitors and residents. January and December see moderate exposure with a UV Index of 5, allowing for a burn time of 30 minutes. However, starting in February, the UV Index escalates to 8, categorized as very high, with a burn time of just 15 minutes. The most critical months for UV exposure are during the summer, from April to August, where the index peaks at 12, denoting an extreme exposure category, and a quick burn time of only 10 minutes. Even September remains a high-risk month with an index of 11. It is crucial for everyone to take precautions during these high-risk months, including seeking shade, wearing protective clothing, and applying sunscreen regularly to minimize the risk of skin damage.

Monthly Maximum UV Index for Hempstead, United States

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

The table above highlights how UV exposure in Hempstead 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.

Hempstead'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
Hempstead	5	8	9	11	11	12	12	11	11	9	6	5
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5