UV Index in Hempstead, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Hempstead, United States, where the Cfa climate brings warm summers with UV exposure peaks that can pose risks to skin health. Knowledge of UV levels helps prevent sunburn and long-term skin damage, making it essential for outdoor enthusiasts and families alike. With the UV Index soaring to a high of 12 during midday, being aware of these fluctuations empowers you to protect yourself while enjoying the sunny days in this vibrant locale. Stay informed and safeguard your skin by checking the UV Index regularly!

Hourly UV Index in Hempstead

The day begins gently with a UV Index of 1 at both 07:00 and 08:00, indicating minimal sun exposure. However, as the clock strikes 09:00, the index rises to 3, signifying a gradual increase in UV intensity. By 10:00, it reaches 5, and the sun takes center stage at 11:00 with a striking 8. The peak arrives at 12:00, soaring to an impressive 10, and continues to climb, hitting its pinnacle with a dazzling 12 at 13:00. As the afternoon unfolds, values begin a slow descent: 11 at 14:00, 10 at 15:00, and then dropping to 7 by 16:00. The evening brings relief, with the index tapering down to 4 at 17:00, 2 at 18:00, and finally returning to a safe 1 by 19:00. Remember to stay protected 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.
TimeUVICategoryTime to Burn
07:001low45 min
08:001low45 min
09:003moderate30 min
10:005moderate30 min
11:008very high15 min
12:0010very high15 min
13:0012extreme10 min
14:0011extreme10 min
15:0010very high15 min
16:007high25 min
17:004moderate30 min
18:002low45 min
19:001low45 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.
JanFebMarAprMayJunJulAugSepOctNovDec589111112121110865
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.
 JanFebMarAprMayJunJulAugSepOctNovDec
Chicago UVI34689101098642
Brooklyn UVI35681010998642
New York City UVI35681010998642
Los Angeles UVI46891011111010754
Hempstead589111112121111965
Houston UVI589111112121110975