UV Index in Henderson, United States

Last updated: July 2, 2025

Understanding the UV Index in Henderson, United States is crucial for ensuring your skin health and preventing sunburn. As a city that experiences a warm Cfa climate, UV levels can soar, particularly during midday hours, peaking at an alarming 11 around 1 PM. Being informed about these patterns allows residents and visitors alike to take proactive steps to shield themselves from harmful UV rays. Whether you're enjoying outdoor activities or simply soaking in the sun, being aware of UV exposure risks is essential for maintaining healthy skin and preventing sun-related ailments. Stay safe, stay informed, and keep your skin glowing!

Hourly UV Index in Henderson

The UV Index for today shows a dramatic rise as the sun ascends into the sky. Starting at a mild 1 by 07:00, the index gradually builds, reaching 3 by 09:00 and peaking at an intense 11 at 13:00—a level where sun protection is crucial. From this pinnacle, the values start to decline, tapering off to 10 at 14:00 and then gradually decreasing through the afternoon and evening, with values of 6 at 16:00 and sliding down to 1 by 19:00. Plan your outdoor activities accordingly, and remember to protect your skin 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
08:002low45 min
09:003moderate30 min
10:006high25 min
11:008very high15 min
12:0010very high15 min
13:0011extreme10 min
14:0010very high15 min
15:009very high15 min
16:006high25 min
17:004moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Henderson

Throughout the year, UV index levels exhibit significant seasonal variations, indicating fluctuating sun exposure risks. The high-risk months typically occur from March to August, with peak UV levels recorded in May, June, and July, where the index reaches an extreme 11 and the burn time reduces to just 10 minutes. During this period, it is crucial for visitors and residents to take protective measures, such as wearing sunscreen with high SPF, donning protective clothing, and seeking shade during midday hours. As summer transitions into autumn, the UV index gradually declines; however, it remains at very high levels through September and October. By late fall and winter, the UV index decreases to moderate levels in November and December, making sun safety less critical, but still advisable. Staying aware of these seasonal changes can help everyone enjoy the outdoors safely.

Monthly Maximum UV Index for Henderson, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Henderson. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec36810111111109753
Data source: Statistical UV Index data for Henderson, 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 Henderson UV Index with Other United States Cities

The table above highlights how UV exposure in Henderson 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.
Henderson'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
Henderson36710111111109853
Los Angeles UVI46891011111010754
Houston UVI589111112121110975