UV Index in Cortland, United States

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Cortland, United States, as it helps in protecting against harmful UV radiation that can lead to sunburn and long-term skin health issues. With a Dfa climate characterized by warm summers, Cortland experiences varying UV levels throughout the day that can reach peaks of 10 during midday hours. Being aware of these levels empowers you to take proactive measures to safeguard your skin while enjoying the sunny days typical of this region. Stay informed and stay safe!

Hourly UV Index in Cortland

The UV Index today paints a picture of intensity as the sun reaches its zenith. Starting off mild at 1 at 07:00, the index quickly climbs to 4 by 09:00, signaling the onset of stronger rays. The sun's power peaks dramatically, with a scorching 10 recorded between 12:00 and 14:00, making this the most critical time for sun protection. As the afternoon wanes, the UV Index dips to 8 at 15:00, then gradually declines to 3 by 17:00, before returning to a gentle 1 by 19:00. It's a day that underscores the importance of safeguarding your skin during those midday 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
09:004moderate30 min
10:006high25 min
11:009very high15 min
12:0010very high15 min
13:0010very high15 min
14:0010very high15 min
15:008very high15 min
16:006high25 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Cortland

Throughout the year, UV exposure changes significantly, peaking during the summer months. January and February see moderate UV Index levels (3 to 5), requiring about 30 minutes of sun exposure before risking burns. However, from March to September, the UV Index escalates, hitting a peak of 10 in June and July, indicating a very high risk for sunburn with a burn time of just 15 minutes. April and May also fall in this high-risk category with UV Index values of 8 and 9. August and September slightly decrease but remain very high at 9 and 8 respectively. The UV Index drops to moderate levels again in October (6) and returns to low in December (2). Residents and visitors are advised to take precautions during the high-risk months—especially from March to September—by wearing protective clothing, using sunscreen, and limiting direct sun exposure to minimize skin damage.

Monthly Maximum UV Index for Cortland, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Cortland. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec35689101098532
Data source: Statistical UV Index data for Cortland, 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 Cortland UV Index with Other United States Cities

The table above highlights how UV exposure in Cortland 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.
Cortland's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Cortland35689101098632
Chicago UVI34689101098642
Brooklyn UVI35681010998642
New York City UVI35681010998642
Los Angeles UVI46891011111010754
Houston UVI589111112121110975