UV Index in Warsaw, United States

Last updated: August 1, 2025

In Warsaw, United States, staying informed about the UV Index is essential for safeguarding your skin and overall health. Understanding UV levels helps you take proactive measures against sunburn and long-term skin damage, especially as exposure can be significantly high during peak hours. With its Cfa climate, Warsaw experiences a range of UV exposures that can become particularly intense, reaching values as high as 10 by midday. This highlights the need for diligent sun protection, enabling residents to enjoy the beautiful outdoors while minimizing health risks. Stay vigilant and keep an eye on the UV Index to protect your skin!

Hourly UV Index in Warsaw

The UV Index shows a notable progression throughout the day, beginning at a minimal level of 1 at 07:00. As the sun climbs higher, the index escalates, peaking at an impressive 10 between 13:00 and 14:00—the height of sun exposure. The morning hours see gradual increases, reaching 8 by 11:00, while 12:00 features a 9, signaling a strong need for protection against harmful rays. Following the peak, the index begins to gently decline, dropping to 6 by 16:00 and down to 3 by 17:00, before winding down to 1 again by 19:00. This data serves as a crucial reminder that midday sun protection is essential for safety during the hours when UV rays are at their strongest.

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
11:007high25 min
12:009very high15 min
13:0010very high15 min
14:009very high15 min
15:008very high15 min
16:005moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Warsaw

Throughout the year, ultraviolet (UV) radiation levels fluctuate significantly, influencing exposure risks for both residents and visitors. January to February begins with a moderate UV Index of 3, increasing to 6 in February, indicating higher caution is needed as the potential for skin damage grows. By March, the Index reaches 7, and from April through September, it peaks at a very high level of 9 to 10, particularly in the summer months of May, June, July, and August. These months represent the highest-risk periods for UV exposure, with a critical burn time of just 15 minutes. As the year progresses, October sees a decrease to a high level of 7, followed by a return to moderate levels in November (5) and December (3). It is crucial for everyone to take precautions during high-risk months, such as wearing sunscreen, protective clothing, and seeking shade to mitigate the risk of UV-related health issues.

Monthly Maximum UV Index for Warsaw, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Warsaw. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec3679101010108753
Data source: Statistical UV Index data for Warsaw, 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 Warsaw UV Index with Other United States Cities

The table above highlights how UV exposure in Warsaw 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.
Warsaw'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
Warsaw3679101010108753
Los Angeles UVI46891011111010754
Houston UVI589111112121110975