UV Index in Sac City, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for the residents of Sac City, United States, as it directly impacts your skin health and helps prevent sunburn. With the region's Dfa climate, known for its warm summers, being aware of daily UV levels can safeguard you from harmful effects of overexposure to the sun. During peak hours, particularly between 10 AM and 2 PM, UV levels can soar to a maximum of 10, indicating a high risk for skin damage. By monitoring the UV Index, you can make informed decisions about sun protection and enjoy the beautiful outdoor offerings of Sac City while keeping your skin safe!

Hourly UV Index in Sac City

The UV index begins its ascent at 07:00, starting at a gentle 1, then climbs gradually through the morning. By 10:00, it reaches a moderate 5, but from 11:00 onwards, the sun's intensity becomes pronounced, peaking at an impressive 10 between 13:00 and 14:00. After this zenith, the index dips to 8 at 15:00 and continues its decline, settling back to 2 by 18:00. As the day winds down into the evening, the UV index drops to a low 1 by 19:00, signaling a return to safer sun exposure levels. Enjoy the sunshine while staying protected during the high points!

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
11:007high25 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 Sac City

Throughout the year, the UV Index experiences significant seasonal changes, with the highest levels occurring during late spring and summer months. April to September are particularly high-risk periods, where the UV Index peaks at 11 in June, categorized as extreme, and remains very high until September. During these months, the recommended burn time shortens to 10-15 minutes, emphasizing the need for diligent sun protection. Visitors and residents are advised to take precautions by wearing sunscreen, protective clothing, and seeking shade during peak UV hours from 10 AM to 4 PM. Conversely, January to March and November to December present lower UV levels, with January starting at 3 (moderate) and decreasing to 2 (low) by December, where a burn time of 45 minutes suggests less urgency for sun safety measures. However, even in lower UV months, it's wise to remain mindful of sun exposure.

Monthly Maximum UV Index for Sac City, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Sac City. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec35589111098532
Data source: Statistical UV Index data for Sac City, 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 Sac City UV Index with Other United States Cities

The table above highlights how UV exposure in Sac City 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.
Sac City'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
Sac City35589111098632
Los Angeles UVI46891011111010754
Houston UVI589111112121110975