UV Index in Preston, United States

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Preston, United States, as it serves as a vital tool for sun safety and skin health. With UV levels peaking at a high of 11 during the midday hours, awareness of these fluctuating levels can significantly aid in preventing sunburn and reducing the risk of long-term skin damage. Given Preston’s Cfa climate, characterized by warm, humid summers, the potential for UV exposure is heightened, making it essential for locals to stay informed and take necessary precautions. By monitoring the UV Index, you can enjoy the sun while protecting your skin!

Hourly UV Index in Preston

As the sun rises, the UV Index begins its ascent, starting the day at a gentle 1 at 7:00 AM and 8:00 AM. By 9:00 AM, it nudges up to 2, but the real surge comes as the clock strikes 10:00 AM, with a jump to 5. The peak arrives at high noon with a blazing 10, reaching its zenith at 1:00 PM and 2:00 PM, both maintaining a fierce 11. The intensity then gradually recedes, dipping to 9 by 3:00 PM, followed by 7 at 4:00 PM, and further down to 5 at 5:00 PM. As the sun begins to set, the UV Index cools off to 3 at 6:00 PM and finally wanes back to a safe 1 by 7:00 PM, reminding us to stay vigilant and protect our 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
08:001low45 min
09:002low45 min
10:005moderate30 min
11:007high25 min
12:0010very high15 min
13:0011extreme10 min
14:0011extreme10 min
15:009very high15 min
16:007high25 min
17:005moderate30 min
18:003moderate30 min
19:001low45 min

Monthly UV Index Trends in Preston

The UV Index exhibits significant seasonal variation, peaking during the summer months. From January (UV Index 4) to February (UV Index 7), exposure remains moderate to high, with burn times shortening as spring approaches. The months of March and April see a sharp increase in UV levels (9 and 10 respectively), indicating very high risk for sunburn, with a burn time of just 15 minutes. The extreme category dominates from May to August (UV Index 11), where even brief sun exposure can result in burns within 10 minutes. As we move into September and October, the index drops to 10 and 8, maintaining a very high risk, before returning to a moderate level in November and December (UV Index 6 and 4). Visitors and residents are strongly advised to take precautions, especially from March through October, by wearing protective clothing, using sunscreen, and seeking shade during peak sun hours to minimize the risk of skin damage.

Monthly Maximum UV Index for Preston, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Preston. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec479101111111110864
Data source: Statistical UV Index data for Preston, 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 Preston UV Index with Other United States Cities

The table above highlights how UV exposure in Preston 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.
Preston'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
Preston479101111111110864
Houston UVI589111112121110975