UV Index in Rochester, United States

Last updated: August 1, 2025

Staying informed about the UV Index in Rochester, United States is vital for protecting your skin and overall health. Understanding UV levels helps you prevent sunburn and long-term skin damage, especially during the peak hours when the index reaches as high as 10 around noon. Rochester's Dfb climate experience can lead to increased UV exposure risks, particularly during sunny days. By keeping track of the UV Index, you can enjoy outdoor activities safely while minimizing your risk of harmful effects from sun exposure.

Hourly UV Index in Rochester

The hourly UV Index data reveals a dynamic shift in sun intensity throughout the day, starting from a gentle 1 at 07:00, ideal for morning strolls. As the sun rises higher, the index escalates, peaking at a potent 10 between 12:00 and 13:00. This mid-day surge emphasizes the need for sunscreen and protective gear, as the risk of harm from UV rays increases significantly. By 15:00, the index begins to decline, settling at 7 before tapering off further to a mere 1 by 19:00, signaling a safe reprieve for evening outdoor activities. Stay aware and protect your 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
08:002low45 min
09:003moderate30 min
10:005moderate30 min
11:007high25 min
12:008very high15 min
13:009very high15 min
14:008very high15 min
15:007high25 min
16:005moderate30 min
17:003moderate30 min
18:001low45 min
19:001low45 min

Monthly UV Index Trends in Rochester

Throughout the year, the UV Index experiences significant fluctuations, with the highest risk of harmful exposure occurring from March to September. During this peak season, particularly in April through August, the UV Index reaches levels of 8 to 10, categorizing exposure as very high and reducing the burn time to just 15 minutes. Conversely, the winter months see much lower UV levels; for instance, January and February maintain a moderate index of 3 and 4, while December drops to a low level of 2. Visitors and residents are advised to take extra precautions during high-risk months, especially by wearing sunscreen, protective clothing, and seeking shade when outdoors to minimize the risk of skin damage.

Monthly Maximum UV Index for Rochester, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Rochester. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Statistical UV Index data for Rochester, 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 Rochester UV Index with Other United States Cities

The table above highlights how UV exposure in Rochester 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.
Rochester's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Rochester34689101098532
Chicago UVI34689101098642
Brooklyn UVI35681010998642
New York City UVI35681010998642
Los Angeles UVI46891011111010754
Houston UVI589111112121110975