UV Index in Spring, United States

Last updated: July 2, 2025

As spring unfolds in the United States, awareness of the UV Index becomes increasingly crucial for protecting your skin and overall health. Understanding the daily UV levels can help prevent sunburn and reduce the risk of long-term skin damage, especially as the sun’s rays strengthen during this season. With the Cfa climate bringing warmer temperatures and more sunshine, knowing when UV exposure peaks—even reaching a high of 11 around noon—empowers you to take effective precautions. Embrace the joys of spring while keeping your skin safe by staying informed about the UV Index!

Hourly UV Index in Spring

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:001low45 min
09:003moderate30 min
10:005moderate30 min
11:008very high15 min
12:0010very high15 min
13:0011extreme10 min
14:0011extreme10 min
15:009very high15 min
16:007high25 min
17:004moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Spring

The UV Index exhibits significant seasonal variations, with the highest values occurring from April to August. During these months, the UV Index is consistently at 11, categorizing exposure as extreme with a burn time of only 10 minutes. This indicates that February to April and September to October are the months to watch, as they also present high to very high UV exposure risks, with burn times between 15 and 25 minutes. January and December are comparatively milder, with moderate UV index levels of 5 and longer burn times. Visitors and residents are advised to take precautions during high-risk months, such as wearing sunscreen, protective clothing, and seeking shade, particularly during peak sun hours. By being mindful of these UV changes, individuals can enjoy outdoor activities while minimizing the risk of UV-related harm.

Monthly Maximum UV Index for Spring, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Spring. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec589111111111110865
Data source: Statistical UV Index data for Spring, 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 Spring UV Index with Other United States Cities

The table above highlights how UV exposure in Spring 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.
Spring'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
Spring589111111111110965
Houston UVI589111112121110975