UV Index in Warsaw, United States

Last updated: August 1, 2025

Understanding the UV Index in Warsaw, United States is crucial for protecting your skin and overall health. With peak levels soaring to an index of 11 during the summer months, awareness of UV radiation is essential to prevent sunburn and long-term skin damage. Warsaw's Cfa climate offers warm summers, making it easy to underestimate the risks associated with sun exposure. By staying informed about daily UV levels, you can enjoy the outdoors while safeguarding your skin from harmful rays.

Hourly UV Index in Warsaw

The UV Index today showcases a dramatic rise in sun intensity as the morning gives way to the blazing afternoon. Starting at a mild 1 at 7:00 AM, it gradually escalates to a moderate 3 by 9:00 AM. By 10:00 AM, the index spikes to 5, signaling a need for caution. As the clock approaches noon, the index reaches a peak of 10, representing a high risk for harm from unprotected sun exposure. The zenith of 11 at 1:00 PM demands serious precautions. However, by 4:00 PM, it begins to decline, settling at 6 by the late afternoon and tapering off to 1 by dusk. It's essential to stay protected during those peak hours to enjoy the sun safely!

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
16:006high25 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Warsaw

As the seasons change, so too does the UV Index, which indicates the intensity of UV radiation. January and December feature moderate levels (UV Index 3), allowing for a burn time of 30 minutes. From February to March, UV levels rise, with March seeing a high index of 6 and a shorter burn time of 25 minutes. The real risk peaks in April and May with an extreme UV Index of 10, followed by a staggering 11 in both June and July, where exposure time drops to just 10 minutes. As the summer continues into August and September, the UV levels remain very high at 10 and 9 respectively, requiring diligent sun protection. October witnesses a decrease to a high index of 7, while November returns to moderate levels. Visitors and residents are advised to exercise caution during the high-risk months of April through September, ensuring to wear protective clothing, apply sunscreen regularly, and seek shade during peak sun hours to minimize skin damage.

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.
JanFebMarAprMayJunJulAugSepOctNovDec35610101111109653
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
Warsaw35610101111109753
Los Angeles UVI46891011111010754
Houston UVI589111112121110975