UV Index in Greenville, United States

Last updated: May 3, 2025

In Greenville, United States, staying aware of the UV Index is crucial for protecting your skin from harmful ultraviolet rays. Understanding UV levels can significantly reduce your risk of sunburn and long-term skin damage, ensuring a healthier lifestyle under the sun. With a Dfa climate, Greenville experiences varied UV exposure, particularly during the peak hours from late morning to early afternoon, where the index can soar to a high of 10. By monitoring the UV Index, residents can make informed decisions about sun safety, embrace outdoor activities, and enjoy the beautiful South Carolina sunshine.

Hourly UV Index in Greenville

The UV Index today reveals a dynamic shift in sunlight intensity, peaking around noon. Starting off at a low of 1 at 7:00 AM and 8:00 AM, the index climbs steadily, hitting 3 by 9:00 AM. As the sun climbs higher, the index soars to 4 at 10:00 AM, then reaches a warning level of 7 by 11:00 AM. The true intensity arrives at 12:00 PM, where the index peaks at an impressive 9, soon followed by a maximum of 10 from 1:00 PM to 2:00 PM. As afternoon transitions into evening, the UV Index decreases to 9 at 3:00 PM, then gently retreats to 4 by 5:00 PM, and further down to a cooling 1 by 7:00 PM. It’s crucial to take precautions during the midday hours to protect your skin from the strongest UV rays!

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
10:004moderate30 min
11:007high25 min
12:009very high15 min
13:0010very high15 min
14:0010very high15 min
15:009very high15 min
16:007high25 min
17:004moderate30 min
18:003moderate30 min
19:001low45 min

Monthly UV Index Trends in Greenville

Throughout the year, seasonal changes in UV Index levels highlight varying risks associated with sun exposure. From January to February, UV levels remain moderate, with burn times of 30 minutes, making it a relatively safer period for outdoor activities. However, as March approaches, the UV Index escalates to 6, indicating higher caution is needed. The spring and summer months show a significant increase, peaking in June with an extreme UV Index of 11, where burn time reduces to just 10 minutes. High-risk months include April through August, with very high to extreme levels; visitors and residents should take extra precautions, like wearing sunscreen, hats, and protective clothing during these months. As the year progresses into October and November, UV levels decrease, returning to moderate levels by December, providing a safer environment for outdoor enjoyment. It’s essential for everyone to stay informed about UV levels and adjust their sun safety practices accordingly.

Monthly Maximum UV Index for Greenville, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Greenville. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Statistical UV Index data for Greenville, 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 Greenville UV Index with Other United States Cities

The table above highlights how UV exposure in Greenville 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.
Greenville'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
Greenville356910111098643
Los Angeles UVI46891011111010754
Houston UVI589111112121110975