UV Index in Westmont, United States

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Westmont, Illinois, to protect themselves from harmful sun exposure. With maximum levels peaking at 10 during midday hours, awareness of UV levels can significantly aid in preventing sunburn and promoting long-term skin health. Westmont's temperate climate often means clear skies, leading to increased risks of UV-related skin damage, especially in the summer months. By staying informed about the UV Index, you can enjoy the outdoors while taking the necessary precautions to shield your skin from the sun's rays.

Hourly UV Index in Westmont

The UV Index reveals a dynamic ascent and descent throughout the day, peaking with intensity during midday. Starting at a gentle 1 at 7:00 AM, it climbs steadily, reaching 10 by 1:00 PM and maintaining this highest level until 2:00 PM. This critical window indicates significant sun exposure, and it’s essential to take precautions. As the afternoon progresses, the index begins to taper off, dropping to 8 at 3:00 PM, then gradually falling to 1 by 7:00 PM. This data highlights the importance of being sun-smart during the peak hours to minimize UV exposure risks.

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
10:005moderate30 min
11:008very high15 min
12:009very high15 min
13:0010very high15 min
14:0010very high15 min
15:008very high15 min
16:006high25 min
17:004moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Westmont

Throughout the year, the UV Index experiences notable fluctuations, indicating varying levels of sun exposure risk. The high-risk months occur from March to September, peaking in May and June with a UV Index of 10, classified as very high. This signifies a decrease in safe sun exposure time to just 15 minutes. In contrast, the lower UV Index months are January (3) and December (2), categorized as moderate and low, with burn times of 30 and 45 minutes, respectively. Residents and visitors are advised to take protective measures such as wearing sunscreen, protective clothing, and seeking shade, especially during the summer months when UV levels are at their highest. It is essential to stay informed and adjust sun exposure accordingly to minimize the risk of skin damage.

Monthly Maximum UV Index for Westmont, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Westmont. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098642
Data source: Statistical UV Index data for Westmont, 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 Westmont UV Index with Other United States Cities

The table above highlights how UV exposure in Westmont 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.
Westmont'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
Westmont357910101098642
Los Angeles UVI46891011111010754
Houston UVI589111112121110975